As filed with the Securities and Exchange Commission on September 4, 2002 Registration No. 333-________ - -------------------------------------------------------------------------------- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ---------- FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PEREGRINE PHARMACEUTICALS, INC. (Exact name of registrant as specified in its charter) 14272 FRANKLIN AVENUE, SUITE 100 TUSTIN, CALIFORNIA 92780-7017 (714) 508-6000 (Name, address and telephone number of Registrant) DELAWARE 95-3698422 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) PAUL J. LYTLE 14272 FRANKLIN AVENUE, SUITE 100 TUSTIN, CALIFORNIA 92780-7017 (714) 508-6000 (Name, address, including zip code, and telephone number, including area code, of agent for service) With Copies To: MARK R. ZIEBELL, ESQ. FALK, SHAFF & ZIEBELL, LLP 18881 VON KARMAN AVENUE, SUITE 1400 IRVINE, CALIFORNIA 92612 (949) 660-7700 APPROXIMATE DATE OF PROPOSED SALE TO THE PUBLIC: From time to time after the effective date of this Registration Statement. If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. [ ] If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. [X] If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [ ] If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [ ]

If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [ ] The aggregate market value of the voting stock held by non-affiliates of the Registrant was approximately $76,840,000 as of August 16, 2002, based upon the price at which such stock was last sold in the principal market for such stock as of such date. CALCULATION OF REGISTRATION FEE - ----------------------------- ----------------------- -------------------- --------------------- --------------------- TITLE OF EACH CLASS AMOUNT PROPOSED MAXIMUM PROPOSED MAXIMUM AMOUNT OF OF SECURITIES TO BE TO BE OFFERING PRICE AGGREGATE OFFERING REGISTRATION REGISTERED REGISTERED(1) PER SHARE(2) PRICE(2) FEE - ----------------------------- ----------------------- -------------------- --------------------- --------------------- Common stock, 5,221,540 $0.58 $ 3,028,493 $ 278.62 $.001 par value(3) - ----------------------------- ----------------------- -------------------- --------------------- --------------------- Common stock, 5,514,712 $0.85 $ 4,687,505 $ 431.26 $.001 par value(4) - ----------------------------- ----------------------- -------------------- --------------------- --------------------- Common stock, 4,136,036 $0.75 $ 3,102,027 $ 285.39 $.001 par value(5) - ----------------------------- ----------------------- -------------------- --------------------- --------------------- Common stock, 7,613,945 $0.71 $ 5,405,901 $ 497.34 $.001 par value(6) - ----------------------------- ----------------------- -------------------- --------------------- --------------------- Total 22,486,233 $ 16,223,926 $ 1,492.61 - ----------------------------- ----------------------- -------------------- --------------------- --------------------- (1) In the event of a stock split, stock dividend or similar transaction involving our common stock, in order to prevent dilution, the number of shares registered shall automatically be increased to cover the additional shares in accordance with Rule 416(a) under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rule 457(c), the aggregate offering price of shares of our common stock is estimated solely for purposes of calculating the registration fee payable pursuant hereto, using the average of the high and low sales price reported by The Nasdaq SmallCap Market for our common stock on August 29, 2002, which was $0.58 per share and, with respect to shares of our common stock issuable upon exercise of outstanding debentures and warrants, the higher of (i) such average sales price or (ii) the conversion or exercise price of such debentures and warrants, respectively. (3) Represents the number of shares of our common stock that are currently outstanding and being offered for resale by certain of our stockholders. (4) Represents 125% of the number of shares of our common stock issuable upon conversion of outstanding debentures, which may be converted at a conversion price of $0.85 per share. (5) Represents 125% of the number of shares of our common stock issuable upon exercise of outstanding warrants, exercisable at any time after the six-month anniversary of the date of issuance until August 8, 2006 at an exercise price of $0.75 per share. (6) Represents 125% of the number of shares of our common stock issuable upon exercise of an outstanding warrant, exercisable at any time after the six-month anniversary of the date of issuance until August 8, 2006, at an exercise price of $0.71 per share. THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.

The information in this prospectus is not complete and may be changed. The selling stockholders may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and the selling stockholders are not soliciting an offer to buy these securities in any state where the offer or sale is not permitted. SUBJECT TO COMPLETION DATED SEPTEMBER 4, 2002 PROSPECTUS 22,486,233 SHARES OF COMMON STOCK [PEREGRINE LOGO] The selling stockholders identified on page 10 of this prospectus are offering for resale up to the number of shares of our common stock set forth opposite their respective names. The selling stockholders may sell the shares from time to time in the public market at the prevailing market price, in negotiated transactions, or as otherwise described in this prospectus under "Plan of Distribution". Our common stock is registered under Section 12(g) of the Securities Exchange Act of 1934 and is listed on The Nasdaq SmallCap Market under the symbol "PPHM". On August 29, 2002, the last reported sale price of our common stock on The Nasdaq SmallCap Market was $0.60 per share. INVESTING IN OUR COMMON STOCK INVOLVES SIGNIFICANT RISKS. SEE "RISK FACTORS" BEGINNING ON PAGE 3 FOR A DESCRIPTION OF CERTAIN FACTORS THAT YOU SHOULD CONSIDER BEFORE PURCHASING THE SHARES OFFERED BY THIS PROSPECTUS. NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. The date of this Prospectus is September 4, 2002

TABLE OF CONTENTS PROSPECTUS SUMMARY.............................................................1 RISK FACTORS...................................................................3 FORWARD-LOOKING STATEMENTS.....................................................7 USE OF PROCEEDS................................................................8 SELLING STOCKHOLDERS...........................................................8 PLAN OF DISTRIBUTION..........................................................12 LEGAL MATTERS.................................................................13 EXPERTS.......................................................................13 WHERE TO LEARN MORE ABOUT US..................................................13 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE...............................14 DISCLOSURE OF COMMISSION POSITION ON INDEMNIFICATION FOR SECURITIES ACT LIABILITIES..............................................................14 You should rely only on the information contained in this document or to which we have referred you. We have not authorized anyone to provide you with information that is different. This document may only be used where it is legal to sell these securities. The information in this document may only be accurate on the date of this document. However, in the event of a material change, this prospectus will be amended or supplemented accordingly. i

PROSPECTUS SUMMARY ABOUT PEREGRINE PHARMACEUTICALS, INC. Peregrine Pharmaceuticals, Inc., located in Tustin, California, is a biopharmaceutical company primarily engaged in the research, development, manufacture and commercialization of cancer therapeutics and cancer diagnostics through a series of proprietary platform technologies using monoclonal antibodies. During January 2002, our Company formed a wholly-owned subsidiary, Avid Bioservices, Inc., to provide an array of contract manufacturing services, including contract manufacturing of antibodies and proteins, cell culture development, process development, and testing of biologics for biopharmaceutical and biotechnology companies under current Good Manufacturing Practices. As used in this prospectus, the terms "we", "us", "our", "Company" and "Peregrine" refers to Peregrine Pharmaceuticals, Inc., and our wholly-owned subsidiaries, Avid Bioservices, Inc. and Vascular Targeting Technologies, Inc. Our main focus is on the development of our collateral targeting agent technologies. Collateral targeting agents typically use antibodies that bind to or target components found in or on most solid tumors. An antibody is a naturally occurring molecule that humans and other animals create in response to disease. In pre-clinical and/or clinical studies, these antibodies are capable of targeting and delivering therapeutic killing agents that kill cancerous tumor cells. We currently have exclusive rights to over 50 issued U.S. and foreign patents protecting various aspects of our technology and have additional pending patent applications that we believe will further strengthen our patent position. Our three collateral targeting agent technologies are known as tumor necrosis therapy, vascular targeting agents and vasopermeation enhancement agents, and are discussed in greater detail in our Annual Report on Form 10-K for the year ended April 30, 2002, which was filed with the Securities and Exchange Commission on August 13, 2002. In addition to collateral targeting agents, we have a direct tumor-targeting antibody, Oncolym(R), for the treatment of Non-Hodgkins B-cell Lymphoma. Oncolym(R) is currently in a Phase I/II clinical trial, which was developed and initiated by Schering A.G. Until recently, we continued to enroll patients as part of the clinical trial plan developed and initiated by Schering A.G. Based on our available financial resources, however, we have currently suspended patient enrollment for this study as we seek to license or partner Oncolym(R) and focus our financial resources on our more advanced clinical trials. Our principal executive offices are located at 14272 Franklin Avenue, Suite 100, Tustin, California 92780-7017, and our telephone number is (714) 508-6000. 1

ABOUT THE OFFERING We are registering the resale of our common stock by the selling stockholders. The selling stockholders and the specific number of shares that they each may resell through this prospectus are listed on page 10. The shares offered for resale by this prospectus include the following: o 5,221,540 common shares that are presently outstanding and owned by the selling stockholders, o 11,749,981 common shares, which reflects a number that is 125% of the number of shares that may be acquired by the selling stockholders upon the exercise of outstanding warrants; and o 5,514,712 shares, which reflects a number that is 125% of the number of shares that may be acquired by the selling stockholders upon the conversion of outstanding debentures. The figures noted above with respect to the outstanding debentures and warrants reflect an additional 25% of the shares of common stock currently issuable upon conversion or exercise of the debentures and warrants, respectively, because such additional shares are required to be included pursuant to the terms of the registration rights agreements that we entered into with the selling stockholders. INFORMATION ON OUTSTANDING SHARES The number of shares of our common stock outstanding before and after this offering are set forth below: o Common stock outstanding before this offering 118,396,749 shares o Common stock outstanding after this offering 132,208,499 shares The numbers set forth above for the shares of common stock outstanding before this offering is the number of shares of our common stock outstanding on August 29, 2002. The number of shares of common stock outstanding after this offering includes (i) up to 9,399,982 shares of our common stock that may be issued upon the exercise of outstanding warrants and (ii) up to 4,411,768 shares of common stock that may be issued upon the conversion of outstanding debentures that may be resold pursuant to this prospectus, but do not include the additional 25% that we are required to include in the registration statement pursuant to the relevant registration rights agreements. The warrants have exercise prices of either $0.71 or $0.75 per share, and the conversion price of the debentures is $0.85 per share. The numbers set forth above do not include 21,834,804 shares of our common stock that, as of the date of this prospectus, are issuable upon the exercise of outstanding options and warrants other than those covered by this prospectus. These additional options and warrants are exercisable at prices ranging from $0.24 to $5.28 per share, with a weighted average exercise price of $1.60 per share. 2

RISK FACTORS An investment in our common stock being offered for resale by the selling stockholders is very risky. You should carefully consider the risk factors described below, together with all other information in this prospectus or incorporated herein by reference before making an investment decision. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also impair our business operations. If any of the following risks actually occurs, our business, financial conditions or operating results could be materially adversely affected. In such case, the trading price of our common stock could decline, and you may lose all or part of your investment. IF WE CANNOT OBTAIN ADDITIONAL FUNDING, OUR PRODUCT DEVELOPMENT AND COMMERCIALIZATION EFFORTS MAY BE REDUCED OR DISCONTINUED. At August 29, 2002, we had approximately $9.5 million in cash and cash equivalents on hand. We have expended substantial funds on the research, development and clinical trials of our product candidates. As a result, we have historically experienced negative cash flows from operations since our inception and we expect the negative cash flows from operations to continue for the foreseeable future, unless and until we are able to generate sufficient revenues from our contract manufacturing services provided by our subsidiary Avid Bioservices, Inc. and/or from the sale and/or licensing of our products under development. While we expect Avid to generate revenues during the foreseeable future, we expect our monthly negative cash flow to continue for the foreseeable future, due to our anticipated clinical trial activities using Cotara(TM), our anticipated development costs associated with Vasopermeation Enhancement Agents ("VEA's") and Vascular Targeting Agents ("VTA's"), and expansion of our manufacturing capabilities. Although we expect research and development expenses to decrease over the next fiscal year primarily due to our available capital resources, we have the ability to expand our research and development plans based on potential capital resources obtained from future financing activities, potential licensing arrangements, and the potential revenues generated from Avid. We believe that we have sufficient cash on hand to meet our obligations on a timely basis through at least the current fiscal year assuming (i) we entered into no additional financing arrangements, (ii) we do not enter into any licensing arrangements for our other product candidates and (iii) we do not generate any other revenue from Avid except for amounts committed to under two signed contracts. In addition to the operations of Avid, we plan to obtain any necessary financing through one or more methods including either equity or debt financing and/or negotiating additional licensing or collaboration agreements for our platform technologies. There can be no assurances that we will be successful in raising such funds on terms acceptable to us, or at all, or that sufficient additional capital will be raised to complete the research, development, and clinical testing of our product candidates. WE HAVE HAD SIGNIFICANT LOSSES AND WE ANTICIPATE FUTURE LOSSES. All of our products are currently in development, pre-clinical studies or clinical trials, and no sales have been generated from commercial product sales. We have incurred net losses in most fiscal years since we began operations in 1981. The following table represents net losses incurred during the past three fiscal years: Net Loss -------- Fiscal Year 2002 $11,718,000 Fiscal Year 2001 $ 9,535,000 Fiscal Year 2000 $14,516,000 As of April 30, 2002, we had an accumulated deficit of $128,447,000. While we expect to generate revenues from our contract manufacturing services to be provided by Avid, in order to achieve and sustain profitable operations, we must successfully develop and obtain regulatory approval for our products, either alone or with others, and must also manufacture, introduce, market and sell our products. The costs associated with clinical trials, contract 3

manufacturing and contract isotope combination services are very expensive and the time frame necessary to achieve market success for our products is long and uncertain. We do not expect to generate product revenues for at least the next two years, and we may never generate product revenues sufficient to become profitable or to sustain profitability. OUR PRODUCT DEVELOPMENT EFFORTS MAY NOT BE SUCCESSFUL. Since inception, we have been engaged in the development of drugs and related therapies for the treatment of people with cancer. Our product candidates have not received regulatory approval and are generally in clinical and pre-clinical stages of development. If the results from any of the clinical trials are poor, those results may adversely affect our ability to raise additional capital, which will affect our ability to continue full-scale research and development for our antibody technologies. In addition, our product candidates may take longer than anticipated to progress through clinical trials or patient enrollment in the clinical trials may be delayed or prolonged significantly, thus delaying the clinical trials. Patient enrollment is a function of many factors, including the size of the patient population, the nature of the protocol, the proximity of patients to the clinical sites, the eligibility criteria for the study, and the availability of insurance coverage. In addition, because our products currently in clinical trials represent a departure from more commonly used methods for cancer treatment, potential patients and their doctors may be inclined to use conventional therapies, such as chemotherapy, rather than enroll in our clinical study. These factors contributed to slower than planned patient enrollment in our Phase II clinical study using Cotara(TM) for the treatment of brain cancer. If we encounter similar delays during our planned Phase III clinical study using Cotara(TM), we will likely experience increased costs and delays in conducting the Phase III trial. If we experience any such difficulties or delays with our other clinical trials, we may have to reduce or discontinue development or clinical testing of some or all of our product candidates currently under development. OUR DEPENDENCY ON ONE RADIOLABELING SUPPLIER MAY NEGATIVELY IMPACT OUR ABILITY TO COMPLETE CLINICAL TRIALS AND MARKET OUR PRODUCTS. For the past four years, we have procured our antibody radioactive isotope combination services ("radiolabeling") with Iso-tex Diagnostics, Inc. for all clinical trials. If this supplier is unable to continue to qualify its facility or label and supply our antibody in a timely manner, our clinical trials could be adversely affected and significantly delayed. While there are other suppliers for radioactive isotope combination services, our clinical trials would be delayed for up to 12 to 18 months because it would take that amount of time to certify a new facility under current Good Manufacturing Practices and qualify the product, plus we would incur significant costs to transfer our technology to another vendor. Prior to commercial distribution of any of our products, if approved, we will be required to identify and contract with a company for commercial antibody manufacturing and radioactive isotope combination services. An antibody that has been combined with a radioactive isotope, such as I-131, cannot be stockpiled against future shortages because it must be used within one week of being radiolabeled to be effective. Accordingly, any change in our existing or future contractual relationships with, or an interruption in supply from, any such third-party service provider or antibody supplier could negatively impact our ability to complete ongoing clinical trials and to market our products, if approved. WE MAY HAVE SIGNIFICANT PRODUCT LIABILITY EXPOSURE BECAUSE WE MAINTAIN ONLY LIMITED PRODUCT LIABILITY INSURANCE. We face an inherent business risk of exposure to product liability claims in the event that the administration of one of our drugs during a clinical trial adversely affects or causes the death of a patient. Although we maintain product liability insurance for clinical studies in the amount of $5,000,000 per occurrence or $5,000,000 in the aggregate on a claims-made basis, this coverage may not be adequate. Product liability insurance is expensive, difficult to obtain and may not be available in the future on acceptable terms, if at all. Our inability to obtain sufficient insurance coverage on reasonable terms or to otherwise protect against potential product liability claims in excess of our insurance coverage, if any, or a product recall, could negatively impact our financial position and results of operations. In addition, the contract manufacturing services that we offer through Avid expose us to an inherent risk of liability as the antibodies or other substances manufactured by Avid, at the request and to the specifications of our customers, could possibly cause adverse effects or have product defects. We obtain agreements from our customers indemnifying and defending us from any potential liability arising from such risk. There can be no assurance, however, that we will be successful in obtaining such agreements in the future or that 4

such indemnification agreements will adequately protect us against potential claims relating to such contract manufacturing services. Although Avid has procured insurance coverage, there is no guarantee that we will be able to maintain our existing coverage or obtain additional coverage on commercially reasonable terms, or at all, or that such insurance will provide adequate coverage against all potential claims to which we might be exposed. A successful partially or completely uninsured claim against Avid would have a material adverse effect on our consolidated operations. THE LIQUIDITY OF OUR COMMON STOCK WILL BE ADVERSELY AFFECTED IF OUR COMMON STOCK IS DELISTED FROM THE NASDAQ SMALLCAP MARKET. Our common stock is presently traded on The Nasdaq SmallCap Market. To maintain inclusion on The Nasdaq SmallCap Market, we must continue to meet the following six listing requirements: 1. Net tangible assets of at least $2,000,000 or market capitalization of at least $35,000,000 or net income of at least $500,000 in either our latest fiscal year or in two of our last three fiscal years; 2. Public float of at least 500,000 shares; 3. Market value of our public float of at least $1,000,000; 4. A minimum closing bid price of $1.00 per share of common stock, without falling below this minimum bid price for a period of 30 consecutive trading days; 5. At least two market makers; and 6. At least 300 stockholders, each holding at least 100 shares of common stock. During August 2002, we were notified by The Nasdaq Stock Market, Inc. that we had fallen out of compliance with a listing requirement because the closing bid price our common stock was less than $1.00 for a period of 30 consecutive trading days. We now have 180 days from the date of notice or until February 18, 2003 to regain compliance by maintaining a minimum closing bid price of $1.00 per share for 10 consecutive trading days while maintaining all other listing requirements. Following this initial 180 calendar day grace period, if we can demonstrate either net income of at least $750,000 in either our latest fiscal year or in two of our last three fiscal years, stockholders' equity of $5 million or a market capitalization of at least $50 million, we will be afforded an additional 180 day grace period. We cannot guarantee that we will be able to achieve the minimum bid price requirement or maintain any of the other requirements in the future. If we fail to meet any of The Nasdaq SmallCap Market listing requirements, the market value of our common stock could fall and holders of common stock would likely find it more difficult to dispose of the common stock. If our common stock is delisted, we will apply to have our common stock quoted on the over-the-counter electronic bulletin board, or any successor exchange. Upon being delisted, however, our common stock will become subject to the regulations of the Securities and Exchange Commission relating to the market for penny stocks. Penny stock, as defined by the Penny Stock Reform Act, is any equity security not traded on a national securities exchange or quoted on the NASDAQ National or SmallCap Market, that has a market price of less than $5.00 per share. The penny stock regulations generally require that a disclosure schedule explaining the penny stock market and the risks associated therewith be delivered to purchasers of penny stocks and impose various sales practice requirements on broker-dealers who sell penny stocks to persons other than established customers and accredited investors. The broker-dealer must make a suitability determination for each purchaser and receive the purchaser's written agreement prior to the sale. In addition, the broker-dealer must make certain mandated disclosures, including the actual sale or purchase price and actual bid offer quotations, as well as the compensation to be received by the broker-dealer and certain associated persons. The regulations applicable to penny stocks may severely affect the market liquidity for our common stock and could limit your ability to sell your securities in the secondary market. THE SALE OF SUBSTANTIAL SHARES OF OUR COMMON STOCK MAY DEPRESS OUR STOCK PRICE. As of August 29, 2002, we had approximately 118,397,000 shares of common stock outstanding, and the last reported sales price of our common stock was $0.60 per share. We could also issue up to approximately 31,235,000 additional shares of common stock upon the exercise of outstanding options and warrants at an average exercise price of $1.33 per share for proceeds of up to approximately $41.6 million, if exercised on a 100% cash basis. Of the total warrants and options outstanding as of August 29, 2002, approximately 6,410,000 5

options and warrants would be considered dilutive to shareholders because we would receive an amount per share which is less than the current market price of our common stock. In addition to the above, we could issue approximately 4,412,000 additional shares of common stock upon the conversion of the convertible debentures at the initial conversion price of $0.85 per share. OUR HIGHLY VOLATILE STOCK PRICE AND TRADING VOLUME MAY ADVERSELY AFFECT THE LIQUIDITY OF OUR COMMON STOCK. The market price of our common stock and the market prices of securities of companies in the biotechnology sector have generally been highly volatile and are likely to continue to be highly volatile. The following table shows the high and low sales price and trading volume of our common stock for each quarter in the two years ended April 30, 2002: COMMON STOCK TRADING COMMON STOCK VOLUME SALES PRICE (000'S OMITTED) ---------------- -------------------- HIGH LOW HIGH LOW ---- --- ---- --- FISCAL YEAR 2002 Quarter Ended April 30, 2002 $2.90 $1.50 751 135 Quarter Ended January 31, 2002 $4.00 $1.32 3,525 73 Quarter Ended October 31, 2001 $2.23 $0.81 4,265 117 Quarter Ended July 31, 2001 $3.50 $1.21 2,127 127 FISCAL YEAR 2001 Quarter Ended April 30, 2001 $2.00 $1.06 705 91 Quarter Ended January 31, 2001 $2.88 $0.38 2,380 191 Quarter Ended October 31, 2000 $3.84 $1.94 3,387 200 Quarter Ended July 31, 2000 $4.75 $2.50 3,742 391 The market price of our common stock may be significantly impacted by many factors, including, but not limited to: o Announcements of technological innovations or new commercial products by us or our competitors; o Publicity regarding actual or potential clinical trial results relating to products under development by us or our competitors; o Our financial results or that of our competitors; o Announcements of licensing agreements, joint ventures, strategic alliances, and any other transaction that involves the sale or use of our technologies or competitive technologies; o Developments and/or disputes concerning our patent or proprietary rights; o Regulatory developments and product safety concerns; o General stock trends in the biotechnology and pharmaceutical industry sectors; o Economic trends and other external factors, including but not limited to, interest rate fluctuations, economic recession, inflation, foreign market trends, national crisis, and disasters; and o Health care reimbursement reform and cost-containment measures implemented by government agencies. These and other external factors have caused and may continue to cause the market price and demand for our common stock to fluctuate substantially, which may limit or prevent investors from readily selling their shares of common stock and may otherwise negatively affect the liquidity of our common stock. WE MAY NOT BE ABLE TO COMPETE WITH OUR COMPETITORS IN THE BIOTECHNOLOGY INDUSTRY BECAUSE MANY OF THEM HAVE GREATER RESOURCES THAN WE DO AND THEY ARE FURTHER ALONG IN THEIR DEVELOPMENT EFFORTS. The biotechnology industry is intensely competitive. It is also subject to rapid change and sensitive to new product introductions or enhancements. We expect to continue to experience significant and increasing levels of competition in the future. Some or all of these companies may have greater financial resources, larger technical staffs, and larger research budgets than 6

we have, as well as greater experience in developing products and running clinical trials. In addition, there may be other companies which are currently developing competitive technologies and products or which may in the future develop technologies and products which are comparable or superior to our technologies and products. Our competitors with respect to various cancer indications include the companies identified in the following table. Due to the significant number of companies attempting to develop cancer treating products, the following table is not intended to be a comprehensive listing of such competitors, nor is the inclusion of a company intended to be a representation that such company's drug will be approved. - ------------------------------------ --------------- ---------------- ----------------------- ------------------ MOST RECENT REPORTED CANCER PRODUCT CASH & INVESTMENTS PEREGRINE'S COMPETITOR'S NAME INDICATION STATUS BALANCE PRODUCT STATUS - ------------------------------------ --------------- ---------------- ----------------------- ------------------ Neurocrine Biosciences Brain Phase II $ 306,005,000 Phase II NeoPharm Brain Phase I/II $ 118,157,000 Phase II Genentech Colorectal Phase III $ 2,452,791,000 Phase I Celgene Corporation Colorectal Phase III $ 301,825,000 Phase I Titan Pharmaceuticals, Inc. Liver Phase I/II $ 96,013,000 Phase I MGI Pharma Liver Phase II $ 75,822,000 Phase I Imclone Systems, Inc. Pancreatic Phase II $ 414,739,000 Phase I ImmunoGen, Inc. Pancreatic Phase I $ 144,002,000 Phase I Vertex Pharmaceuticals, Inc. Soft-tissue Phase II $ 699,030,000 Phase I sarcoma Idec Pharmaceuticals Lymphoma Approved $ 876,411,000 Phase I/II Corixa Corporation Lymphoma BLA submitted $ 94,870,000 Phase I/II The above information was gathered from the most recent filings with the Securities and Exchange Commission for the above companies. For a listing of other competitors and products in clinical trials, you can utilize the world wide web and web sites such as http://www.biospace.com, http://biotech.about.com and http://www.centerwatch.com. We do not vouch for the accuracy of the information found at these web sites, nor do we intend to incorporate by reference its contents. IF WE LOSE QUALIFIED MANAGEMENT AND SCIENTIFIC PERSONNEL OR ARE UNABLE TO ATTRACT AND RETAIN SUCH PERSONNEL, WE MAY BE UNABLE TO SUCCESSFULLY DEVELOP OUR PRODUCTS OR WE MAY BE SIGNIFICANTLY DELAYED IN DEVELOPING OUR PRODUCTS. Our success is dependent, in part, upon a limited number of key executive officers, each of who are an at-will employee, and our scientific researchers. For example, because of their extensive understanding of our technologies and product development programs, the loss of either Mr. Steven King, our Vice President of Technology and Product Development, or Dr. Terrence Chew, our Senior Vice President of Clinical and Regulatory Affairs, would adversely affect our development efforts and clinical trial programs during the six to 12 month period we estimate it would take to find and train a qualified replacement. We also believe that our future success will depend largely upon our ability to attract and retain highly skilled research and development and technical personnel. We face intense competition in our recruiting activities, including competition from larger companies with greater resources. We do not know if we will be successful in attracting or retaining skilled personnel. The loss of certain key employees or our inability to attract and retain other qualified employees could negatively affect our operations and financial performance. FORWARD-LOOKING STATEMENTS Except for historical information, the information contained in this prospectus and in our reports filed with the SEC are "forward looking" statements about our expected future business and financial performance. These statements involve known and unknown risks, including, among others, risks resulting from economic and market conditions, the regulatory environment in which we operate, pricing pressures, accurately forecasting operating and capital expenditures and clinical trial costs, competitive activities, uncertainties of litigation and other business conditions, and are subject to uncertainties and assumptions contained elsewhere in this prospectus. We base our forward-looking statements on information currently available to us, and, in 7

accordance with the requirements of federal securities laws, we will disclose to you material developments affecting such statements. Our actual operating results and financial performance may prove to be very different from what we have predicted as of the date of this prospectus due to certain risks and uncertainties. The risks described above in the section entitled "Risk Factors" specifically address some of the factors that may affect our future operating results and financial performance. USE OF PROCEEDS We will not receive any proceeds from the resale of our common stock by the selling stockholders. We may receive proceeds from the exercise of the warrants held by the selling stockholders, although they are not obligated to, and we can give no assurance that they will, exercise the warrants. The warrants are exercisable on a cash basis unless the resale of the shares under this registration statement is not effective at the time the warrant is exercised, in which case the holder may exercise the warrant on a cashless basis. If all warrants are exercised in full on a cash basis, we estimate that we will receive gross proceeds of $6,806,340. We intend to use such proceeds, if any, for working capital purposes. Pending the use of any such proceeds, we intend to invest these funds in short-term, interest bearing investment-grade securities. SELLING STOCKHOLDERS The following table identifies the selling stockholders and indicates (i) the nature of any position, office or other material relationship that each selling stockholder has had with us during the past three years (or any of our predecessors or affiliates) and (ii) the number of shares of our common stock owned by the selling stockholder prior to the offering, the number of shares to be offered for the selling stockholder's account and the number of shares and percentage of outstanding shares to be owned by the selling stockholder after completion of the offering. Beneficial ownership is determined in accordance with Rule 13d-3 promulgated by the Securities and Exchange Commission, and generally includes voting or investment power with respect to securities. Except as indicated in the footnotes to the table, we believe each holder possesses sole voting and investment power with respect to all of the shares of common stock owned by that holder, subject to community property laws where applicable. In computing the number of shares beneficially owned by a holder and the percentage ownership of that holder, shares of common stock subject to options or warrants or underlying debentures held by that holder that are currently exercisable or convertible or are exercisable or convertible within 60 days after the date of the table are deemed outstanding. Those shares, however, are not deemed outstanding for the purpose of computing the percentage ownership of any other person or group. The terms of the debentures and the warrants whose underlying shares of common stock are included for resale under this prospectus prohibit conversion of the debentures or exercise of the warrants to the extent that conversion of the debentures would result in the holder, together with its affiliates, beneficially owning in excess of 4.999% or 9.999% of our outstanding shares of common stock, and to the extent that exercise of the warrants would result in the holder, together with its affiliates, beneficially owning in excess of 4.999% or 9.999% of our outstanding shares of common stock. These limitations do not preclude a holder from converting or exercising a debenture or warrant, respectively, and selling shares underlying the debenture or warrant in stages over time where each stage does not cause the holder and its affiliates to beneficially own shares in excess of the limitation amounts. The footnotes to the table describe beneficial ownership adjustments required by these limitations, if any. In addition to the above restrictions, the outstanding debentures and warrants each contain a provision which precluded us from issuing, in connection with the transactions described below, and at prices less than the greater of book or market value of our common stock, a number of shares of our common stock which, in the aggregate for such transactions, would exceed in excess of 19.99% of our common stock outstanding as of the date we consummated such transactions. The foregoing limitation will cease to apply in the event that we obtain, prior to any such prohibited issuance, approval of our stockholders under applicable Nasdaq Marketplace Rules to issue in connection with these transactions an aggregate number of shares equal to or in excess of 20% or outstanding shares of common stock. Consequently, we have determined that, although not presently required, it is more efficient and cost effective to solicit stockholder approval in connection with our annual stockholder meeting to be held on October 22, 2002, as opposed to call a special meeting of stockholders in the event that we later become required to seek such approval. You should refer to our definitive proxy statement on Form 14A, which was filed with the SEC on August 28, 2002, which contains the proposal in question. 8

All of the shares of our common stock being offered under this prospectus were issued or are issuable upon exercise or conversion of warrants or debentures, respectively, that were issued in the following two private placement transactions: FIRST SECURITIES PURCHASE AGREEMENT CONVERTIBLE DEBT ISSUANCE. On August 9, 2002, we entered into a private placement with four of the selling stockholders under a Securities Purchase Agreement, whereby we issued convertible debentures for aggregate gross proceeds equal to $3,750,000 ("Debenture"). The Debentures earn interest at a rate of 6% per annum, payable in cash semi-annually. Under the terms of the Debenture, the principal amount is convertible, at the option of the holder (or automatically upon our common stock trading at a certain price level for a certain period of time), into a number of shares of our common stock calculated by dividing the unpaid principal amount of the Debenture by the conversion price of $0.85 per share ("Conversion Price"). If we enter into any financing transactions (with certain defined exceptions) within 18 months following the date this registration statement is declared effective by the SEC ("Reset Period"), at a per share price less than the Conversion Price, the Conversion Price will be reset to the lower price for all outstanding Debentures. The Debentures are secured by generally all assets of the Company. Under this Securities Purchase Agreement, the selling stockholders who purchased debentures were also granted warrants to purchase an aggregate of 3,308,827 shares of our common stock, which was calculated, as to each selling stockholder, as follows: 75% of the quotient obtained by dividing the aggregate principal amount of the selling stockholder's Debenture by the initial Conversion Price. The warrants have a 4-year term and are exercisable six months after the date of issuance at an exercise price of $0.75 per share. The Exercise Price of the warrants may also be reduced to a lower price if, during the Reset Period, we enter into a financing transaction at a per share price less than the Exercise Price. COMMON STOCK PURCHASE. Under the same Securities Purchase Agreement, we sold an aggregate of 1,923,078 shares of our common stock to two selling stockholders for gross proceeds of $1,250,000. In conjunction with the sale of our common stock, we issued warrants to the two selling stockholders to purchase up to an aggregate of 1,442,309 shares of common stock. The warrants have a 4-year term and are exercisable six months after the date of issuance at an exercise price of $0.71 per share. The exercise price of these warrants is subject to a reset provision that is similar to that of the above described warrants issued in connection with the debentures. In addition, if we enter into any financing transaction during the Reset Period at a per share price less than the common stock purchase price of $0.65 per share ("Adjusted Purchase Price"), then each applicable selling stockholder will receive an adjustment warrant equal to (1) the number of shares of our common stock that would have been issued to such selling stockholder on the closing date at the Adjusted Purchase Price less (2) the number of shares of our common stock actually issued to such selling stockholder on the closing date. The adjustment warrant, if issued, will be priced at an exercise price of $0.001 per share and will expire 4 years from the closing date. If we issue any adjustment warrant, we are required to file an additional registration statement covering the resale of the shares of our common stock issuable upon exercise of such adjustment warrant. SECOND SECURITIES PURCHASE AGREEMENT COMMON STOCK PURCHASE. Also on August 9, 2002, pursuant to a second Securities Purchase Agreement, we sold 3,298,462 shares of our common stock at a negotiated price of $0.65 per share in exchange for gross proceeds of $2,144,000 to selling stockholder. In conjunction with this offering, we issued a warrant to purchase up to an aggregate 4,648,846 shares of our common stock. The warrant has a 4-year term and is exercisable six months after the date of issuance at an exercise price of $0.71 per share. This warrant contains an exercise price reset provision similar to those described above. In addition, if we enter into any financing transaction within 18 months following the date this registration statement is declared effective by the SEC at a per share price less than the purchase price of $0.65 per share ("Adjusted Price"), then the selling stockholder will receive an adjustment warrant equal to (1) the number of shares of our common stock that would have been issued to such selling stockholder on 9

the closing date at the Adjusted Price less (2) the number of shares of our common stock actually issued to such selling stockholder on the closing date. The adjustment warrant, if issued, will be at an exercise price of $0.001 per share and will expire 4 years from the closing date. If we issue any adjustment warrant, we are required to file an additional registration statement covering the resale of the shares of our common stock issuable upon exercise of such adjustment warrant. We entered into a Registration Rights Agreement with the selling stockholders under each of the Securities Purchase Agreements pursuant to which we agreed to register the resale of no less than 125% of the number of shares of our common stock issued or to be issued upon exercise of the warrants or conversion of the debentures. The figures below for each selling stockholder include the additional 25% of shares of common stock that we are required to include in the registration statement. SHARES BENEFICIALLY OWNED PRIOR TO SHARES BENEFICIALLY OWNED OFFERING(1) MAXIMUM NUMBER OF AFTER OFFERING NAME OF REGISTERED -------------------------- SHARES TO BE ---------------------------- SHAREHOLDER NUMBER PERCENT SOLD(2) NUMBER PERCENT - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- Otato L.P. (3) 470,589 * 823,531 0 0% c/o OTA Limited Partnership One Manhattanville Road Purchase, NY 10577 - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- SDS Merchant Fund, L.P. (4) 882,353 * 1,544,118 0 0% c/o SDS Capital Partners 53 Forest Avenue, 2nd Floor Old Greenwich, CT 06870 - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- Xmark Fund, L.P. (5) 778,530 * 1,362,428 0 0% 152 W. 57th Street, 21st Floor New York, NY 10019 - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- Xmark Fund, Ltd. (6) 2,162,648 1.8% 3,784,634 0 0% 152 W. 57th Street, 21st Floor New York, NY 10019 - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- Cleveland Overseas Limited (7) 117,648 * 205,884 0 0% St. Markusgazza 19 FL-9490 Vaduz, Liechtenstein - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- Cranshire Capital, L.P. (8) 1,384,616 1.2% 2,423,078 0 0% 666 Dundee Road, Suite 1901 Northbrook, IL 60062 - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- Alpha Capital Aktiengesellschaff (9) 538,462 * 942,309 0 0% 160 Central Park South, Suite 2701 New York, NY 10019 - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- ZLP Master Fund, Ltd. (10) 3,298,462 2.8% 7,947,308 0 0% Goldman Sachs (Cayman) Trust, Ltd. 2nd Floor, Harbour Centre Georgetown, Cayman Islands, B.W.I. - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- TOTAL 9,633,308 8.14% 19,033,290 0 0% - ----------------------------------------- --------------- ---------- -------------------- ---------------- ----------- - ---------------------- * Represents less than 1%. (1) Based on an aggregate of 118,396,749 shares of common stock issued and outstanding as of August 29, 2002. (2) Assumes that all selling stockholders will resell all of the offered shares. (3) Includes (i) up to 470,589 shares which may be issued to Otato L.P. upon conversion of a 6% convertible debenture issued in connection with a Securities Purchase Agreement dated August 9, 2002, at a conversion price of $0.85 per share and (ii) up to 352,942 shares which may be 10

issued to Otato L.P. upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.75 per share. Otato L.P. has not had a material relationship with us or any of our affiliates within the past three years. (4) Includes (i) up to 882,353 shares which may be issued to SDS Merchant Fund, LP upon conversion of a 6% convertible debenture issued in connection with a Securities Purchase Agreement dated August 9, 2002, at a conversion price of $0.85 per share and (ii) up to 661,765 shares which may be issued to SDS Merchant Fund, LP upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.75 per share. SDS Merchant Fund, LP has not had a material relationship with us or any of our affiliates within the past three years. (5) Includes (i) up to 778,530 shares which may be issued to Xmark Fund, L.P. upon conversion of a 6% convertible debenture issued in connection with a Securities Purchase Agreement dated August 9, 2002, at a conversion price of $0.85 per share and (ii) up to 583,898 shares which may be issued to Xmark Fund, L.P. upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.75 per share. Xmark Fund, L.P. has not had a material relationship with us or any of our affiliates within the past three years. (6) Includes (i) up to 2,162,648 shares which may be issued to Xmark Fund, Ltd. upon conversion of a 6% convertible debenture issued in connection with a Securities Purchase Agreement dated August 9, 2002, at a conversion price of $0.85 per share and (ii) up to 1,621,986 shares which may be issued to Xmark Fund, Ltd. upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.75 per share. Xmark Fund, Ltd. has not had a material relationship with us or any of our affiliates within the past three years. (7) Includes (i) up to 117,648 shares which may be issued to Cleveland Overseas Limited upon conversion of a 6% convertible debenture issued in connection with a Securities Purchase Agreement dated August 9, 2002, at a conversion price of $0.85 per share and (ii) up to 88,236 shares which may be issued to Cleveland Overseas Limited upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.75 per share. Cleveland Overseas Limited has not had a material relationship with us or any of our affiliates within the past three years. (8) Includes (i) 1,384,616 shares issued to Cranshire Capital, L.P. in connection with a Securities Purchase Agreement dated August 9, 2002, at a purchase price of $0.65 per share and (ii) up to 1,038,462 shares which may be issued to Cranshire Capital, L.P. upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.71 per share. Cranshire Capital, L.P. has not had a material relationship with us or any of our affiliates within the past three years. (9) Includes (i) 538,462 shares issued to Alpha Capital Aktiengesellschaff in connection with a Securities Purchase Agreement dated August 9, 2002, at a purchase price of $0.65 per share and (ii) up to 403,847 shares which may be issued to Alpha Capital Aktiengesellschaff upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.71 per share. Alpha Capital Aktiengesellschaff has not had a material relationship with us or any of our affiliates within the past three years. (10) Includes (i) 3,298,462 shares issued to ZLP Master Fund, Ltd. in connection with a Securities Purchase Agreement dated August 9, 2002, at a purchase price of $0.65 per share and (ii) up to 4,648,846 shares which may be issued to ZLP Master Fund, Ltd. upon exercise of an outstanding warrant issued in connection with the Securities Purchase Agreement. The exercise price of the warrant is $0.71 per share. ZLP Master Fund, Ltd. has not had a material relationship with us or any of our affiliates within the past three years. 11

PLAN OF DISTRIBUTION The Selling Stockholders and any of their pledges, assignees and successors-in-interest may, from time to time, sell any or all of their shares of common stock on any stock exchange, market or trading facility on which the shares are traded or in private transactions. These sales may be at fixed or negotiated prices. The Selling Stockholders may use any one or more of the following methods when selling shares: o Ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; o Block trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transactions; o Purchases by a broker-dealer as principal and resale by the broker-dealer for its account; o An exchange distribution in accordance with the rules of the applicable exchange; o Privately negotiated transactions; o Short sales; o Broker-dealers may agree with the Selling Stockholders to sell a specified number of such shares at a stipulated price per share; o A combination of any such methods of sale; and o Any other method permitted pursuant to applicable law. The Selling Stockholders may also sell shares under Rule 144 under the Securities Act, if available, rather than under this prospectus. Broker-dealers engaged by the Selling Stockholders may arrange for other broker-dealers to participate in sales. Broker-dealers may receive commissions or discounts from the Selling Stockholders (or, if any broker-dealer acts as agent for the purchaser of shares, from the purchaser) in amounts to be negotiated. The Selling Stockholders do not expect these commissions and discounts to exceed what is customary in the types of transactions involved. The Selling Stockholders may from time to time pledge or grant a security interest in some or all of the shares of common stock or warrants owned by them and, if they default in the performance of their secured obligations, the pledges or secured parties may offer and sell the shares of common stock from time to time under this prospectus, or under any amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act amending the list of Selling Stockholders to include the pledgee, transferee or other successors in interest as Selling Stockholders under this prospectus. The Selling Stockholders also may transfer the shares of common stock in other circumstances, in which case the transferees, pledges or other successors in interest will be the selling beneficial owners for purposes of this prospectus. The Selling Stockholders and any broker-dealers or agents that are involved in selling the shares may be deemed to be "underwriters" within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act. Each Selling Stockholder has informed our Company that it does not have any agreement or understanding, directly or indirectly, with any person to distribute the common stock. The Selling Stockholders may enter into hedging transactions with third parties, which may in turn engage in short sales of the securities in the course of hedging the position they assume. The Selling Stockholders may also enter into short positions or other derivative transactions relating to the securities, or interests in the securities, and deliver the securities, or interests in the securities, to close out their short or other positions or otherwise settle short sales or other transactions, or loan or pledge the securities, or interests in the securities, to third parties that in turn may dispose of these securities. 12

The Selling Stockholders have agreed that they will not engage in any trading practice or activity for the purpose of manipulating the price of our common stock or otherwise engage in any trading practice or activity that violates the rules and regulations of the SEC. Our Company is required to pay all fees and expenses incident to the registration of the shares. We have agreed to indemnify the Selling Stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act. In order to comply with the securities laws of certain states, if applicable, the shares of our common stock offered by this prospectus may be sold in these jurisdictions only through registered or licensed brokers or dealers. In addition, in certain states the shares of our common stock offered by this prospectus may not be sold unless such shares have been registered or qualified for sale in these states or an exemption from registration or qualification is available and complied with. Our common stock is currently traded on The Nasdaq SmallCap Market under the symbol "PPHM." LEGAL MATTERS The validity of the shares of common stock offered by this prospectus has been passed upon for us by Falk, Shaff & Ziebell, LLP, Irvine, California. EXPERTS Ernst & Young LLP, independent auditors, have audited our consolidated financial statements and schedule included in our Annual Report on Form 10-K for the year ended April 30, 2002, as set forth in their report, which is incorporated by reference in this prospectus and elsewhere in the registration statement. Our consolidated financial statements and schedule are incorporated by reference in reliance on Ernst & Young LLP's report, given on their authority as experts in accounting and auditing. WHERE TO LEARN MORE ABOUT US We have filed with the SEC a registration statement on Form S-3 under the Securities Act, relating to the shares of our common stock being offered by this prospectus. For further information pertaining to our common stock and the shares of common stock being offering by this prospectus, reference is made to such registration statement. This prospectus constitutes the prospectus we filed as a part of the registration statement and it does not contain all information in the registration statement, certain portions of which have been omitted in accordance with the rules and regulations of the SEC. In addition, we are subject to the informational requirements of the Exchange Act, and, in accordance with such requirements, files reports, proxy statements and other information with the SEC relating to its business, financial statements and other matters. Reports and proxy and information statements filed under Section 14(a) and 14(c) of the Exchange Act and other information filed with the SEC as well as copies of the registration statement can be inspected and copied at the public reference facilities maintained by the SEC at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549, and at the SEC's Midwest Regional Offices at 500 West Madison Street, Chicago, Illinois 60606. Copies of such material can also be obtained at prescribed rates from the Public Reference Section of the SEC at its principal office at Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549. Such material may also be obtained electronically by visiting the SEC's web site on the Internet at http://www.sec.gov. Our common stock is traded on The Nasdaq SmallCap Market under the symbol "PPHM." Reports, proxy statements and other information concerning our Company may be inspected at the National Association of Securities Dealers, Inc., at 1735 K Street, N.W., Washington D.C. 20006. 13

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE The SEC allows us to "incorporate by reference" into this prospectus the documents we file with them, which means that we can disclose important information to you by referring you to these documents. The information that we incorporate by reference into this prospectus is considered to be part of this prospectus, and information that we file later with the SEC automatically updates and supersedes any information in this prospectus. We incorporate by reference into this prospectus the documents listed below: 1. Annual Report on Form 10-K for the fiscal year ended April 30, 2002, as filed with the SEC on August 13, 2002, under Section 13(a) of the Securities Exchange Act of 1934; 2. Amendment No. 1 to the Annual Report on Form 10-K for the fiscal year ended April 30, 2002, as filed with the SEC on August 14, 2002, under Section 13(a) of the Securities Exchange Act of 1934; 3. Current Report on Form 8-K, as filed with the SEC on August 12, 2002; 4. Current Report on Form 8-K, as filed with the SEC on August 13, 2002; 5. Current Report on Form 8-K, as filed with the SEC on August 22, 2002; 6. Definitive Proxy Statement with respect to the Annual Meeting of Stockholders to be held on October 22, 2002, as filed with the SEC on August 28, 2002; 7. The description of our common stock contained in our Registration Statement on Form 8-A and Form 8-B (Registration of Successor Issuers) filed under the Securities Exchange Act of 1934, including any amendment or report filed for the purpose of updating such description; and 8. All other reports filed by us under Section 13(a) of 15(d) of the Securities Exchange Act of 1934 since the end of our fiscal year ended April 30, 2002. All documents we have filed with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 after the date of the initial registration statement and prior to the effective date of the registration statement or subsequent to the date of this prospectus and prior to the filing of a post-effective amendment indicating that all securities offered have been sold (or which re-registers all securities then remaining unsold), are deemed to be incorporated in this prospectus by this reference and to be made a part of this prospectus from the date of filing of such documents. We will provide, without charge, upon written or oral request of any person to whom a copy of this prospectus is delivered, a copy of any or all of the foregoing documents and information that has been or may be incorporated in this prospectus by reference, other than exhibits to such documents. Requests for such documents and information should be directed to Attention: Paul J. Lytle, Vice President, Finance and Accounting, 14272 Franklin Avenue, Suite 100, Tustin, California 92780-7017, telephone number (714) 508-6000. See also "Where to Learn More About Us." DISCLOSURE OF COMMISSION POSITION ON INDEMNIFICATION FOR SECURITIES ACT LIABILITIES Our Bylaws provide that we will indemnify our directors and officers and may indemnify our employees and other agents to the fullest extent permitted by law. We believe that indemnification under our Bylaws covers at least negligence and gross negligence by indemnified parties, and permits us to advance litigation expenses in the case of stockholder derivative actions or other actions, against an undertaking by the indemnified party to repay such advances if it is ultimately determined that the indemnified party is not entitled to indemnification. We have liability insurance for our directors and officers. In addition, our Certificate of Incorporation provides that, under Delaware law, our directors shall not be liable for monetary damages for breach of the directors' fiduciary duty as a director to us and our stockholders. This provision in the Certificate of Incorporation does not eliminate the directors' fiduciary duty, and in appropriate circumstances equitable remedies such as injunctive or other forms of non-monetary relief will remain available under Delaware law. In addition, each director will continue to be subject to 14

liability for breach of the director's duty of loyalty to our Company for acts or omissions not in good faith or involving intentional misconduct, for knowing violations of law, for actions leading to improper personal benefit to the director, and for payment of dividends or approval of stock repurchases or redemptions that are unlawful under Delaware law. The provision also does not affect a director's responsibilities under any other law, such as the federal securities laws or state or federal environmental laws. Provisions of our Bylaws require us, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers (other than liabilities arising from actions not taken in good faith or in a manner the indemnitee believed to be opposed to our best interests) to advance their expenses incurred as a result of any proceeding against them as to which they could be indemnified and to obtain directors' insurance if available on reasonable terms. To the extent that indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers or persons controlling our Company as discussed in the foregoing provisions, we have been informed that in the opinion of the SEC, such indemnification is against public policy as expressed in the Securities Act of 1933, and is therefore unenforceable. We believe that our Certificate of Incorporation and Bylaw provisions are necessary to attract and retain qualified persons as directors and officers. We have in place a directors' and officers' liability insurance policy that, subject to the terms and conditions of the policy, insures our directors and officers against losses arising from any wrongful act (as defined by the policy) in his or her capacity as a director or officer. The policy reimburses us for amounts, which we lawfully indemnify or are required or permitted by law to indemnify our directors and officers. 15

================================================================================ YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED IN THIS DOCUMENT OR TO WHICH WE HAVE REFERRED YOU. WE HAVE NOT AUTHORIZED ANYONE TO PROVIDE YOU WITH INFORMATION THAT IS DIFFERENT. THIS DOCUMENT MAY ONLY BE USED WHERE IT IS LEGAL TO SELL THESE SECURITIES. THE INFORMATION IN THIS DOCUMENT MAY ONLY BE ACCURATE ON THE DATE OF THIS DOCUMENT. __________________________________ COMMON STOCK TABLE OF CONTENTS PROSPECTUS SUMMARY 1 _________________ RISK FACTORS 3 FORWARD-LOOKING STATEMENTS 7 PROSPECTUS USE OF PROCEEDS 8 _________________ SELLING STOCKHOLDERS 8 PLAN OF DISTRIBUTION 12 LEGAL MATTERS 13 EXPERTS 13 WHERE TO LEARN MORE ABOUT US 13 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE 14 DISCLOSURE OF COMMISSION POSITION ON INDEMNIFICATION FOR SECURITIES ACT LIABILITIES 14 SEPTEMBER 4, 2002 ================================================================================

PART II. INFORMATION NOT REQUIRED IN PROSPECTUS ITEM 14. OTHER EXPENSES OF ISSUANCES AND DISTRIBUTION The following table sets forth the estimated expenses in connection with the offering described in this registration statement: SEC registration fee............................$ 1,493 Printing and engraving expenses................. 10,000 Legal fees and expenses......................... 20,000 Accounting fees and expenses.................... 15,000 Miscellaneous................................... 5,000 -------------- Total...........................................$ 51,493 ============== ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS Our Certificate of Incorporation (the "Certificate") and Bylaws include provisions that eliminate the directors' personal liability for monetary damages to the fullest extend possible under Delaware Law or other applicable law (the "Director Liability Provision"). The Director Liability Provision eliminates the liability of directors to us and our stockholders for monetary damages arising out of any violation by a director of his or her fiduciary duty of due care. However, the Director Liability Provision does not eliminate the personal liability of a director for (i) breach of the director's duty of loyalty, (ii) acts or omissions not in good faith or involving intentional misconduct or knowing violation of law, (iii) payment of dividends or repurchases or redemption of stock other than from lawfully available funds, or (iv) any transactions from which the director derived an improper benefit. The Director Liability Provision also does not affect a director's liability under the federal securities laws or the recovery of damages by third parties. Furthermore, under Delaware Law, the limitation liability afforded by the Director Liability Provision does not eliminate a director's personal liability for breach of the director's duty of due care. Although the directors would not be liable for monetary damages to us or our stockholders for negligent acts or omissions in exercising their duty of due care, the directors remain subject to equitable remedies, such as actions for injunction or rescission, although these remedies, whether as a result of timeliness or otherwise, may not be effective in all situations. With regard to directors who also are officers of our company, these persons would be insulated from liability only with respect to their conduct as directors and would not be insulated from liability for acts or omissions in their capacity as officers. These provisions may cover actions undertaken by the Board of Directors, which may serve as the basis for a claim against us under the federal and state securities laws. We have been advised that it is the position of the SEC that insofar as the foregoing provisions may be involved to disclaim liability for damages arising under the Securities Act of 1933, as amended (the "Securities Act"), such provisions are against public policy as expressed in the Securities Act and are therefore unenforceable. Delaware law provides a detailed statutory framework covering indemnification of our directors, officers, employees or agents against liabilities and expenses arising out of legal proceedings brought against them by reason of their status or service as directors, officers, employees or agents. Section 145 of the Delaware General Corporation Law ("Section 145") provides that a director, officer, employee or agent of a corporation (i) shall be indemnified by the corporation for expenses actually and reasonably incurred in defense of any action or proceeding if such person is sued by reason of his or her service to the corporation, to the extent that such person has been successful in defense of such action or proceeding, or in defense of any claim, issue or matter raised in such litigation, (ii) may, in actions other than actions by or in the right of the corporation (such as derivative actions), be indemnified for expenses actually and reasonably incurred, judgments, fines and amounts paid in settlement of such litigation, even if he or she is not successful on the merits, if he or she acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the corporation (and in a criminal proceeding, if he or she did not have reasonable cause to believe his or her conduct was unlawful), and (iii) may be indemnified by the corporation for expenses actually and reasonably incurred (but not judgments or settlements) in any action by the corporation or of a derivative action (such as a suit by a stockholder alleging a breach by the director or officer of a duty owed to the corporation), even if he or she is not successful, provided that he or she acted in good faith and in a manner reasonably believed to be in or not opposed to the best interests of the corporation, provided that no indemnification is permitted without court approval if the director has been adjudged liable to the corporation. II-1

Delaware Law also permits a corporation to elect to indemnify its officers, directors, employees and agents under a broader range of circumstances than that provided under Section 145. The Certificate contains a provision that takes full advantage of the permissive Delaware indemnification laws (the "Indemnification Provision") and provides that we are required to indemnify our officers, directors, employees and agents to the fullest extent permitted by law, including those circumstances in which indemnification would otherwise be discretionary, provided, however, that prior to making such discretionary indemnification, we must determine that the person acted in good faith and in a manner he or she believed to be in the best interests of the corporation and, in the case of any criminal action or proceeding, the person had no reason to believe his or her conduct was unlawful. In furtherance of the objectives of the Indemnification Provision, we have also entered into agreements to indemnify our directors and executive officers, in addition to the indemnification provided for in our Certificate and Bylaws (the "Indemnification Agreements"). We believe that the Indemnification Agreements are necessary to attract and retain qualified directors and executive officers. Pursuant to the Indemnification Agreements, an indemnitee will be entitled to indemnification to the extent permitted by Section 145 or other applicable law. In addition, to the maximum extent permitted by applicable law, an indemnitee will be entitled to indemnification for any amount or expense which the indemnitee actually and reasonably incurs as a result of or in connection with prosecuting, defending, preparing to prosecute or defend, investigating, preparing to be a witness, or otherwise participating in any threatened, pending or completed claim, suit, arbitration, inquiry or other proceeding ("Proceeding") in which the indemnitee is threatened to be made or is made a party or participant as a result of his or her position with our company, provided that the indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to our best interests and had no reasonable cause to believe his or her conduct was unlawful. If the Proceeding is brought by or in the right of our company and applicable law so provides, the Indemnification Agreement provides that no indemnification against expenses shall be made in respect of any claim, issue or matter in the Proceeding as to which the indemnitee shall have been adjudged liable to us. Insofar as indemnification for liabilities arising under the Securities Act, may be permitted to our directors, officers or controlling persons pursuant to the foregoing provisions, we have been advised that in the opinion of the Securities and Exchange Commission, such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. ITEM 16. EXHIBITS The Exhibits to this Registration Statement are listed in the Exhibit Index commencing at page EX-1 hereof. ITEM 17. UNDERTAKINGS (a) The undersigned registrant hereby undertakes: (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement: (i) To include any prospectus required by Section 10(a)(3) of the Securities Act; (ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424 (b) if, in the aggregate, the changes in volume and price present no more than a 20% change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective Registration Statement; II-2

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement; PROVIDED, HOWEVER, that paragraphs (1)(i) and (1)(ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed by the registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the Registration Statement. (2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial BONA FIDE offering thereof. (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant's annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at the time shall be deemed to be the initial BONA FIDE offering thereof. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the provisions described under Item 15 above, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue. II-3

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this registration statement on Form S-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Tustin, State of California, on September 3, 2002. PEREGRINE PHARMACEUTICALS, INC. By: /s/ Edward J. Legere ---------------------------------------- Edward J. Legere, President and Chief Executive Officer, Director Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated. POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints, Edward J. Legere and Paul J. Lytle, and each of them, as his attorney-in-fact, each with full power of substitution, for him in any and all capacities, to sign any and all amendments to this Registration Statement (including post-effective amendments), and any and all Registration Statements filed pursuant to Rule 462 under the Securities Act of 1933, as amended, in connection with or related to the Offering contemplated by this Registration Statement and its amendments, if any, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorney to any and all amendments to said Registration Statement. SIGNATURE TITLE DATE - --------- ----- ---- /s/ Edward J. Legere President and Chief Executive September 3, 2002 - -------------------------------- Officer, Director Edward J. Legere /s/ Paul J. Lytle Vice President of Finance and Accounting and September 3, 2002 - -------------------------------- Principal Accounting Officer Paul J. Lytle /s/ Carlton M. Johnson Director September 3, 2002 - -------------------------------- Carlton M. Johnson /s/ Eric S. Swartz Director September 3, 2002 - -------------------------------- Eric S. Swartz /s/ Clive R. Taylor, M.D., Ph.D Director September 3, 2002 - -------------------------------- Clive R. Taylor, M.D., Ph.D.

EXHIBIT INDEX DESCRIPTION 3.1 Certificate of Incorporation of Techniclone Corporation, a Delaware corporation (Incorporated by reference to Exhibit B to the Company's 1996 Proxy Statement as filed with the Commission on or about August 20, 1996) 3.2 Bylaws of Peregrine Pharmaceuticals, Inc. (formerly Techniclone Corporation), a Delaware corporation (Incorporated by reference to Exhibit C to the Company's 1996 Proxy Statement as filed with the Commission on or about August 20, 1996) 3.3 Certificate of Designation of 5% Adjustable Convertible Class C Preferred Stock as filed with the Delaware Secretary of State on April 23, 1997 (Incorporated by reference to Exhibit 3.1 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about May 12, 1997) 3.4 Certificate of Amendment to Certificate of Incorporation of Techniclone Corporation to effect the name change to Peregrine Pharmaceuticals, Inc., a Delaware corporation (Incorporated by reference to Exhibit 3.4 contained in the Registrant's Annual Report on Form 10-K for the year ended April 30, 2001, as filed with the Commission on July 27, 2001) 4.1 Form of Certificate for Common stock (Incorporated by reference to the Exhibit 4.1 contained in Registrant's Annual Report on Form 10-K for the year ended April 30, 1988) 4.7 5% Preferred Stock Investment Agreement between Registrant and the Investors (Incorporated by reference to Exhibit 4.1 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about May 12, 1997) 4.8 Registration Rights Agreement between the Registrant and the holders of the Class C Preferred Stock (Incorporated by reference to Exhibit 4.2 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about May 12, 1997) 4.9 Form of Stock Purchase Warrant to be issued to the holders of the Class C Preferred Stock upon conversion of the Class C Preferred Stock (Incorporated by reference to Exhibit 4.3 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about May 12, 1997) 4.10 Regulation D Common Equity Line Subscription Agreement dated June 16, 1998 between the Registrant and the Equity Line Subscribers named therein (Incorporated by reference to Exhibit 4.4 contained in Registrant's Current Report on Form 8-K dated as filed with the Commission on or about June 29, 1998) 4.11 Form of Amendment to Regulation D Common Stock Equity Line Subscription Agreement (Incorporated by reference to Exhibit 4.5 contained in Registrant's Current Report on Form 8-K filed with the Commission on or about June 29, 1998) 4.12 Registration Rights Agreement between the Registrant and the Subscribers (Incorporated by reference to Exhibit 4.6 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about June 29, 1998) 4.13 Form of Stock Purchase Warrant to be issued to the Equity Line Subscribers pursuant to the Regulation D Common Stock Equity Subscription Agreement (Incorporated by reference to Exhibit 4.7 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about June 29, 1998) 4.14 Placement Agent Agreement dated as of June 16, 1998, by and between the Registrant and Swartz Investments LLC, a Georgia limited liability company d/b/a Swartz Institutional Finance (Incorporated by reference to Exhibit 4.14 contained in Registrant's Registration Statement on Form S-3 (File No. 333-63773) as filed with the Commission on September 18, 1998) EX-1

4.15 Second Amendment to Regulation D Common Stock Equity Line Subscription Agreement dated as of September 16, 1998, by and among the Registrant, The Tail Wind Fund, Ltd. and Resonance Limited (Incorporated by reference to Exhibit 4.15 contained in the Registrant's Registration Statement on Form S-3 (File No. 333-63773) as filed with the Commission on September 18, 1998) 4.16 Form of Non-Qualified Stock Option Agreement by and between Registrant, Director and certain consultants dated December 22, 1999 (Incorporated by reference to Exhibit 4.16 contained in Registrant's Registration Statement on Form S-3 (File No. 333-40716) as filed with the Commission on July 3, 2000) 5.1 Opinion of Falk, Shaff & Ziebell, LLP* 10.23 Incentive Stock Option, Nonqualified Stock Option and Restricted Stock Purchase Plan - 1986 (Incorporated by reference as Exhibit 10.23 contained in Registrant's Registration Statement on Form S-8 (File No. 33-15102)) 10.24 Cancer Biologics Incorporated Incentive Stock Option, Nonqualified Stock Option and Restricted Stock Purchase Plan 1987 (Incorporated by reference to Exhibit 10.24 as contained in Registrant's Registration Statement on Form S-8 (File No. 33-8664)) 10.26 Amendment to 1986 Stock Option Plan dated March 1, 1988 (Incorporated by reference to Exhibit 10.26 contained in Registrant's Annual Report on Form 10-K for the year ended April 30, 1988) 10.31 Agreement dated February 5, 1996, between Cambridge Antibody Technology, Ltd. and Registrant (Incorporated by reference to Exhibit 10.1 contained in Registrant's Current Report on Form 8-K dated February 5, 1996, as filed with the Commission on or about February 8, 1996) 10.32 Distribution Agreement dated February 29, 1996, between Biotechnology Development, Ltd. and Registrant (Incorporated by reference to Exhibit 10.1 contained in Registrant's Current Report on Form 8-K dated February 29, 1996, as filed with the Commission on or about March 7, 1996) 10.33 Option Agreement dated February 29, 1996, by and between Biotechnology Development, Ltd. and Registrant (Incorporated by reference to Exhibit 10.2 contained in Registrant's Current Report on Form 8-K dated February 29, 1996, as filed with the Commission on or about March 7, 1996) 10.40 1996 Stock Incentive Plan (Incorporated by reference to Exhibit 4.1 contained in Registrant's Registration Statement in form S-8 (File No. 333-17513) as filed with the Commission on December 9, 1996) 10.41 Stock Exchange Agreement dated as of January 15, 1997 among the stockholders of Peregrine Pharmaceuticals, Inc. and Registrant (Incorporated by reference to Exhibit 2.1 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 1997) 10.42 First Amendment to Stock Exchange Agreement among the Stockholders of Peregrine Pharmaceuticals, Inc. and Registrant (Incorporated by reference to Exhibit 2.1 contained in Registrant's Current Report on Form 8-K as filed with the Commission on or about May 12, 1997) 10.43 Termination and Transfer Agreement dated as of November 14, 1997 by and between Registrant and Alpha Therapeutic Corporation (Incorporated by reference to Exhibit 10.1 contained in Registrant's Current Report on Form 8-K as filed with the commission on or about November 24, 1997) 10.46 Option Agreement dated October 23, 1998 between Biotechnology Development Ltd. and the Registrant (Incorporated by reference to Exhibit 10.46 contained in Registrant's Quarterly Report on Form 10-Q for the fiscal quarter ended October 31, 1998, as filed with the SEC on or about December 15, 1998) EX-2

10.47 Real Estate Purchase Agreement by and between Techniclone Corporation and 14282 Franklin Avenue Associates, LLC dated December 24, 1998 (Incorporated by reference to Exhibit 10.47 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 1999) 10.48 Lease and Agreement of Lease between TNCA, LLC, as Landlord, and Techniclone Corporation, as Tenant, dated as of December 24, 1998 (Incorporated by reference to Exhibit 10.48 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 1999) 10.49 Promissory Note dated as of December 24, 1998 between Techniclone Corporation (Payee) and TNCA Holding, LLC (Maker) for $1,925,000 (Incorporated by reference to Exhibit 10.49 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 1999) 10.50 Pledge and Security Agreement dated as of December 24, 1998 for $1,925,000 Promissory Note between Grantors and Techniclone Corporation (Secured Party) (Incorporated by reference to Exhibit 10.50 to Registrant's Quarterly Report Form 10-Q for the quarter ended January 31, 1999) 10.51 Final fully-executed copy of the Regulation D Common Stock Equity Line Subscription Agreement dated as of June 16, 1998 between the Registrant and the Subscribers named therein (Incorporated by reference to Exhibit 10.51 contained in the Registrant's Registration Statement on Form S-3/A as filed with the Commission on April 30, 1999) 10.53 Termination Agreement dated as of March 8, 1999 by and between Registrant and Biotechnology Development Ltd. (Incorporated by reference to Exhibit 10.53 to Registrant's Annual Report on Form 10-K for the year ended April 30, 1999) 10.54 Secured Promissory Note for $3,300,000 dated March 8, 1999 between Registrant and Biotechnology Development Ltd. (Incorporated by reference to Exhibit 10.54 to Registrant's Annual Report on Form 10-K for the year ended April 30, 1999) 10.55 Security Agreement dated March 8, 1999 between Registrant and Biotechnology Development Ltd. (Incorporated by reference to Exhibit 10.52 to Registrant's Annual Report on Form 10-K for the year ended April 30, 1999) 10.56 License Agreement dated as of March 8, 1999 by and between Registrant and Schering A.G., Germany (Incorporated by reference to Exhibit 10.56 to Registrant's Annual Report on Form 10-K for the year ended April 30, 1999) 10.57 Patent License Agreement dated October 8, 1998 between Registrant and the Board of Regents of the University of Texas System for patents related to Targeting the Vasculature of Solid Tumors (Vascular Targeting Agent patents) (Incorporated by reference to Exhibit 10.57 to Registrant's Quarterly Report on Form 10-Q for the quarter ended July 31, 1999) 10.58 Patent License Agreement dated October 8, 1998 between Registrant and the Board of Regents of the University of Texas System for patents related to the Coagulation of the Tumor Vasculature (Vascular Targeting Agent patents) (Incorporated by reference to Exhibit 10.58 to Registrant's Quarterly Report on Form 10-Q for the quarter ended July 31, 1999) 10.59 License Agreement between Northwestern University and Registrant dated August 4, 1999 covering the LYM-1 and LYM-2 antibodies (Oncolym(R)) (Incorporated by reference to Exhibit 10.59 to Registrant's Quarterly Report on Form 10-Q for the quarter ended July 31, 1999) 10.63 Change in Control Agreement dated September 27, 1999 between Registrant and Terrence Chew, V.P. of Clinical and Regulatory Affairs (Incorporated by reference to Exhibit 10.63 to Registrant's Quarterly Report on Form 10-Q for the quarter ended October 31, 1999) EX-3

10.64 Regulation D Subscription Agreement dated January 6, 2000 between Registrant and Subscribers, Swartz Investments, LLC and Biotechnology Development, LTD. (Incorporated by reference to Exhibit 10.64 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2000) 10.65 Registration Right Agreement dated January 6, 2000 between Registrant and Subscribers of the Regulation D Subscription Agreement dated January 6, 2000 (Incorporated by reference to Exhibit 10.65 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2000) 10.66 Form of Warrant to be issued to subscribers pursuant to the Regulation D Subscription Agreement dated January 6, 2000 (Incorporated by reference to Exhibit 10.66 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2000) 10.67 Warrant to purchase 750,000 shares of common stock of the Registrant issued to Swartz Private Equity, LLC dated November 19, 1999 (Incorporated by reference to Exhibit 10.67 to Registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2000) 10.68 Amendment Agreement dated June 14, 2000 to the License Agreement dated March 8, 1999 by and between Registrant and Schering A.G. (Incorporated by reference to Exhibit 10.68 to Registrant's Registration Statement on Form S-3 (File No. 333-40716)) 10.69 Waiver Agreement by and between Registrant and Biotechnology Development Ltd. effective December 29, 1999 (Incorporated by reference to Exhibit 10.69 to Registrant's Registration Statement on Form S-3 (File No. 333-40716)) 10.70 Joint Venture Agreement by and between Registrant and OXiGENE, Inc. dated May 11, 2000 (Incorporated by reference to Exhibit 10.70 to Registrant's Registration Statement on Form S-3 (File No. 333-40716)) 10.71 Third Amendment to Regulation D Common Stock Equity Line Subscription Agreement dated June 2, 2000 by and among the Registrant, the Tail Wind Fund, Ltd. and Resonance Limited (Incorporated by reference to Exhibit 10.71 to Registrant's Quarterly Report on Form 10-Q for the quarter ended July 31, 2000) 10.73 Common Stock Purchase Agreement to purchase up to 6,000,000 shares of Common Stock of Registrant issued to ZLP Master Fund, LTD, ZLP Master Technology Fund, LTD, Eric Swartz, Michael C. Kendrick, Vertical Ventures LLC and Triton West Group, Inc. dated November 16, 2001 (Incorporated by reference to Exhibit 10.73 to Registrant's Current Report on Form 8-K dated November 19, 2001, as filed with the Commission on November 19, 2001). 10.74 Form of Warrant to be issued to Investors pursuant to the Common Stock Purchase Agreement dated November 16, 2001 (Incorporated by reference to Exhibit 10.74 to Registrant's Current Report on Form 8-K dated November 19, 2001, as filed with the Commission on November 19, 2001). 10.75 Common Stock Purchase Agreement to purchase 1,100,000 shares of Common Stock of Registrant issued to ZLP Master Fund, LTD and Vertical Capital Holdings, Ltd. dated January 28, 2002 (Incorporated by reference to Exhibit 10.75 to Registrant's Current Report on Form 8-K dated January 31, 2002, as filed with the Commission on February 5, 2002). 10.76 Form of Warrant to be issued to Investors pursuant to the Common Stock Purchase Agreement dated January 28, 2002 (Incorporated by reference to Exhibit 10.76 to Registrant's Current Report on Form 8-K dated January 31, 2002, as filed with the Commission on February 5, 2002). 10.77 Securities Purchase Agreement dated as of August 9, 2002 between Registrant and Purchasers. * 10.78 Form of Convertible Debentures issued to Purchasers pursuant to Securities Purchase Agreement dated August 9, 2002. * EX-4

10.79 Registration Rights Agreement dated August 9, 2002 between Registrant and Purchasers of Securities Purchase Agreements dated August 9, 2002.* 10.80 Form of Warrant to be issued to Purchasers pursuant to Securities Purchase Agreement dated August 9, 2002. * 10.81 Form of Warrant issued to Debenture holders pursuant to Securities Purchase Agreement dated August 9, 2002. * 10.82 Form of Adjustment Warrant issued to Investors pursuant to Securities Purchase Agreement dated August 9, 2002. * 10.83 Securities Purchase Agreement dated as of August 9, 2002 between Registrant and ZLP Master Fund, Ltd. * 10.84 Registration Rights Agreement dated August 9, 2002 between Registrant and ZLP Master Fund, Ltd. * 10.85 Form of Warrant to be issued to ZLP Master Fund, Ltd. pursuant to Securities Purchase Agreement dated August 9, 2002. * 10.86 Form of Adjustment Warrant issued to ZLP Master Fund, Ltd. pursuant to Securities Purchase Agreement dated August 9, 2002. * 23.1 Consent of Falk, Shaff & Ziebell, LLP (contained in Exhibit 5.1).* 23.2 Consent of Independent Auditors.* - ------------------- * Filed herewith. EX-5

EXHIBIT 5.1 (Falk, Shaff & Ziebell, LLP Letterhead) September 4, 2002 Peregrine Pharmaceuticals, Inc. 14272 Franklin Avenue, Suite 100 Tustin, California 92780-7017 Re: Registration Statement on Form S-3 Peregrine Pharmaceuticals, Inc., Common Stock, par value $.001 per share Ladies and Gentlemen: We are counsel for Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "Company"), in connection with the preparation of the Registration Statement on Form S-3 (the "Registration Statement") as to which this opinion is a part, filed with the Securities and Exchange Commission (the "Commission") on September 4, 2002 for the resale of up to 22,486,233 shares of common stock, $.001 par value, of the Company by selling stockholders (the "Shares"). In connection with rendering our opinion as set forth below, we have reviewed and examined originals or copies of such corporate records and other documents and have satisfied ourselves as to such other matters as we have deemed necessary to enable us to express our opinion hereinafter set forth. Based upon the foregoing, it is our opinion that: The issued Shares covered by the Registration Statement have been validly issued and are fully paid and nonassessable. The Shares to be issued upon the conversion and exercise of certain debentures and warrants, respectively, as covered by the Registration Statement, when issued in accordance with the terms and conditions set forth in the Registration Statement, will be duly authorized, validly issued, fully paid and nonassessable. We hereby consent to the filing of this opinion as an Exhibit to the Registration Statement and to the reference to this firm under the caption "Legal Matters" in the prospectus included in the Registration Statement. Very truly yours, /S/ FALK, SHAFF & ZIEBELL, LLP - ------------------------------ FALK, SHAFF & ZIEBELL, LLP

EXHIBIT 10.77 EXECUTED SECURITIES PURCHASE AGREEMENT SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement dated as of August 9, 2002 (this "AGREEMENT"), by and among Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), and the purchasers identified on the signature pages hereto (each, including its respective successors and assigns, a "PURCHASER" and collectively, the "PURCHASERS"). WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to Section 4(2) of the Securities Act of 1933, as amended (the "SECURITIES ACT"), and Rule 506 promulgated thereunder, the Company desires to issue and sell to the Purchasers, and the Purchasers, severally and not jointly, desire to purchase from the Company, certain securities of the Company, as more fully described in this Agreement. NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and the Purchasers agree as follows: ARTICLE I. DEFINITIONS 1.1. DEFINITIONS. In addition to the terms defined elsewhere in this Agreement, the following terms shall have the meanings set forth in this Section 1.1: "ADJUSTMENT WARRANT" means a common stock purchase warrant in the form attached hereto as EXHIBIT G. "AFFILIATE" means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common control with a Person, as such terms are used in and construed under Rule 144. "BUSINESS DAY" means any day except Saturday, Sunday and any day which shall be a federal legal holiday or a day on which banking institutions in the State of New York are authorized or required by law or other governmental action to close. "CLOSING" means the closing of the purchase and sale of the Shares and the Warrants, as contemplated by Section 2.1. "CLOSING DATE" means the date of the Closing. "COMMISSION" means the Securities and Exchange Commission. "COMMON SHARES" means the shares of Common Stock issuable to the Purchasers at the Closing. "COMMON STOCK" means the common stock of the Company, $.001 par value per share, and any securities into which such common stock may hereafter be reclassified.

"COMMON STOCK EQUIVALENTS" means any securities of the Company or any Subsidiary which entitle the holder thereof to acquire Common Stock at any time, including without limitation, any debt, preferred stock, rights, options, warrants or other instrument that is at any time convertible into or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock or other securities that entitle the holder to receive, directly or indirectly, Common Stock. "COMMON STOCK INVESTMENT AMOUNT" means, with respect to the purchase of the Common Stock by a Purchaser, the amount indicated below such Purchaser's name on such Purchaser's signature page of this Agreement. "COMMON STOCK WARRANTS" means, collectively, the Common Stock purchase warrants issuable to each Purchaser at the Closing, in the form attached hereto as EXHIBIT C-1. "COMPANY OUTSIDE COUNSEL" means Jeffers, Shaff & Falk, LLP. "DEBENTURES" means $3,750,000 in aggregate principal amount of 6% Secured Convertible Debentures due on the third year anniversary of the issuance date thereof, in the form of EXHIBIT A hereto. "DEBENTURE INVESTMENT AMOUNT" means, with respect to the purchase of the Debentures by a Purchaser, the amount indicated below such Purchaser's name on such Purchaser's signature page of this Agreement. "DEBENTURE WARRANTS" means , collectively, the Common Stock purchase warrants issuable to each Purchaser at the Closing, in the form attached hereto as EXHIBIT C-2. "EFFECTIVE DATE" means the date that a Registration Statement is first declared effective by the Commission. "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended. "INDEBTEDNESS" shall mean the principal amount of, premium, if any, profit participation, if any, and accrued and unpaid interest on and all other amounts and costs payable in respect of (a) indebtedness for money borrowed from others; (b) indebtedness guaranteed, directly or indirectly, in any manner, or in effect guaranteed, directly or indirectly, in any manner through an agreement, contingent or otherwise, to supply funds to, or in any other manner invest in the debtor, or to purchase indebtedness, or to purchase and pay for property if not delivered or pay for services if not performed, primarily for the purpose of enabling the debtor to make payment of the indebtedness or to assure the owners of the indebtedness against loss; (c) all indebtedness secured by any mortgage, lien, pledge, charge or other encumbrance upon property owned by the Company; (d) all indebtedness of such Person created or arising under any conditional sale, lease (intended primarily as a financing device) or other title retention or security agreement with respect to property acquired by the Company even though the rights and remedies of the seller, lessor or lender under such agreement or lease in the event of a default may be limited to repossession or sale of such property; and (e) renewals, extensions and refundings of any such indebtedness. 2

"INTELLECTUAL PROPERTY SECURITY AGREEMENT" means the Intellectual Property Security Agreement, dated as of the date of this Agreement, by and among the Company and the holders of the Debentures, pursuant to which the obligations of the Company under the Debentures are secured by the intellectual property of the Company, such agreement in the form of EXHIBIT H attached hereto. "LOCK-UP LETTER" means the lock-up letter, in the form attached hereto as EXHIBIT E, to be executed by each of Edward Legere, Eric Swartz and Clive Taylor. "PER SHARE PURCHASE PRICE" equals $0.65 "PERSON" means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind. "PROCEEDING" means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial proceeding, such as a deposition), whether commenced or threatened. "PURCHASER PERCENTAGE" means, with respect to a Purchaser, the percentage equal to the product of (x) a fraction, the numerator of which shall be the sum of the Common Stock Investment Amount plus the Debenture Investment Amount paid or payable by such Purchaser on the Closing Date, and the denominator of which shall be the sum of the aggregate amount of Common Stock Investment Amount plus the aggregate amount of Debenture Investment Amount paid or payable by all Purchasers on the Closing Date times (y) 100. "REGISTRATION STATEMENT" means one or more registration statements meeting the requirements set forth in the Registration Rights Agreement and covering the resale of the Common Shares, the Underlying Shares and the Warrant Shares by the Purchasers. "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights Agreement, dated as of the date of this Agreement, by and among the Company and the Purchasers, in the form of EXHIBIT B attached hereto. "RULE 144" means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same effect as such Rule. "SECURITIES" means the Debentures, Common Shares, the Underlying Shares, the Warrants, the Adjustment Warrant, the Debenture Warrant and the Warrant Shares. "SECURITY AGREEMENT" means the Security Agreement, dated as of the date of this Agreement, by and among the Company and the holders of the Debentures, pursuant to which the obligations of the Company under the Debentures are secured by the assets of the Company, such agreement in the form of EXHIBIT I attached hereto. "SHARES" means the Common Shares issuable to the Purchasers on the Closing Date. 3

"SUBSIDIARY" means any subsidiary of the Company that is required to be listed in SCHEDULE 3.1(A). "STRATEGIC TRANSACTION" means a transaction or relationship in which the Company issues shares of Common Stock to a Person which is, itself or through its subsidiaries, an operating company in a business synergistic with the business of the Company, whose business consists primarily of manufacturing, research, developing, or selling pharmaceutical products and in which the Company receives material benefits in addition to the investment of funds (such Person, a "STRATEGIC COMPANY"), but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital or to a Person whose primary business is investing in securities. The parties agree that the issuance by the Company of Common Stock in connection with the Company's licensing of technology to or from a Strategic Company if (i) such arrangement is approved by the board of directors of the Company, (ii) such transaction is a bona fide, arms-length transaction to a third party unaffiliated with the Company or any of its Affiliates, (iii) the Common Stock at issue may not be registered for resale until 60 Trading Days following the Effective Date (plus such number of Trading Days during such period when the Registration Statement may not be used by the Purchasers for the resale of the Common Shares), (iv) such Strategic Company is not in the primary business of investing in securities, (v) and such Strategic Company purchases the Common Stock, for cash, at a price equal to or greater than the average of the Closing Prices of the Common Stock for the five Trading Days immediately preceding the closing date of the issuance of the Common Stock shall be deemed a Strategic Transaction. "TRADING DAY" means (i) a day on which the Common Stock is traded on a Trading Market, or (ii) if the Common Stock is not listed on a Trading Market, a day on which the Common Stock is traded in the over the counter market, as reported by the OTC Bulletin Board, or (iii) if the Common Stock is not quoted on the OTC Bulletin Board, a day on which the Common Stock is quoted in the over the counter market as reported by the National Quotation Bureau Incorporated (or any similar organization or agency succeeding its functions of reporting prices); provided, that in the event that the Common Stock is not listed or quoted as set forth in (i), (ii) and (iii) hereof, then Trading Day shall mean a Business Day. "TRADING MARKET" means whichever of the Nasdaq SmallCap Market, Nasdaq National Market, American Stock Exchange or New York Stock Exchange on which the Common Stock is then listed or quoted. "TRANSFER AGENT INSTRUCTIONS" means the company's transfer agent instructions in the form of EXHIBIT D. "TRANSACTION DOCUMENTS" means this Agreement, the Debentures, the Security Agreement, the Intellectual Property Security Agreement, the Registration Rights Agreement, the Warrants, the Adjustment Warrants, the Transfer Agent Instructions, the Voting Rights Letter, the Lock-Up Letters, and any other documents or agreements executed in connection with the transactions contemplated hereunder. "UNDERLYING SHARES" means the shares of Common Stock issuable in respect of the Debentures, including any the Interest Shares (as defined in the Debentures). 4

"VOTING RIGHTS LETTER" means the voting rights letter, from Edward Legere, addressed to the Purchasers, in the form attached hereto as EXHIBIT F. "WARRANTS" means, collectively, the Common Stock Warrants and the Debenture Warrants. "WARRANT SHARES" means the shares of Common Stock issuable upon exercise of the Warrants, the Adjustment Warrants and the Debenture Warrants. "ZLP PURCHASE AGREEMENT" means the Securities Purchase Agreement, dated as of August 9, 2002, between the Company and ZLP Master Fund, Ltd. ("ZLP"), as amended, modified or supplemented from time to time in accordance with its terms, pursuant to which ZLP will purchase from the Company shares of Common Stock and common stock purchase warrants similar to the Warrants and the Adjustment Warrants, and have the right to require the Company to register the Common Stock so purchased and shares of common stock issuable upon exercise of all common stock purchase warrants pursuant to a registration rights agreement similar to the Registration Rights Agreement. ARTICLE II. PURCHASE AND SALE 2.1. CLOSING. Subject to the terms and conditions set forth in this Agreement the Company shall issue and sell to the Purchasers and the Purchasers shall, severally and not jointly, purchase from the Company the Debentures, Common Shares and the Warrants. The closing of the purchase and the sale of the Debentures, Common Shares and the Warrants shall take place at the offices of Bryan Cave LLP, 1290 Avenue of the Americas, New York, New York 10104, on the first Trading Day immediately following the date that the conditions set forth in Section 2.4 have been satisfied or waived by the appropriate party or at such other location or such later date as the parties shall agree. 2.2. DELIVERIES. On the date that this Agreement is executed, (a) the Company shall deliver or cause to be delivered to each Purchaser (i) this Agreement, the Registration Rights Agreement, and to each Purchaser of Debentures, the Security Agreement and the Intellectual Property Security Agreement, each executed by the Company; (ii) the Transfer Agent Instructions, signed by the Company's transfer agent and counter-signed by the Company; (iii) each of the Lock-Up Letters; and (iv) the Voting Rights Letter; (b) each Purchaser shall deliver to the Company this Agreement and a Registration Rights Agreement, each duly executed by such Purchaser; and (c) each Purchaser of Debentures shall deliver to the Company the Security Agreement and the Intellectual Property Security Agreement, executed by such Purchaser. 2.3. CLOSING DELIVERIES. (a) At the Closing, the Company shall deliver or cause to be delivered to each Purchaser the following: (i) a stock certificate, containing the legend set forth in Section 4.1(b), registered in the name of such Purchaser, evidencing the number of Common Shares equal to such Purchaser's Common Stock Investment Amount divided by the Per Share Purchase Price; 5

(ii) a Debenture, registered in the name of such Purchaser, evidencing the principal amount of Debentures purchased by such Purchaser, which amount is such Purchaser's Debenture Investment Amount; (iii) a Warrant, registered in the name of such Purchaser who acquired Common Shares pursuant to Section 2.3(a)(i), pursuant to which such Purchaser shall have the right to acquire the number of Warrant Shares equal to 75% of the quotient obtained by dividing the amount to be paid by such Purchaser in accordance with Section 2.3(b) by the Per Share Purchase Price; (iv) An Adjustment Warrant, registered in the name of each Purchaser who acquired Common Shares pursuant to Section 2.3(a)(i), pursuant to which such Purchaser shall have the right to acquire the number of Adjustment Shares as set forth in Section 4.6 hereof; (v) A Debenture Warrant, registered in the name of each Purchaser who acquired a Debenture pursuant to Section 2.3(a)(ii) equal to 75% of the quotient obtained by dividing the amount to be paid by such Purchaser by $0.85.; and (vi) legal opinion of Company Outside Counsel, in agreed form, addressed to the Purchasers; (b) At the Closing, each Purchaser shall deliver or cause to be delivered to the Company, in United States dollars in immediately available funds by wire transfer to an account designated in writing by the Company for such purpose, an amount equal to the sum of such Purchaser's Common Stock Investment Amount plus such Purchaser's Debenture Investment Amount. 2.4. CONDITIONS TO CLOSING. The obligation of a Purchaser to perform at the Closing is subject to satisfaction or waiver by such Purchaser of each of the following conditions: (a) REPRESENTATIONS AND WARRANTIES. The representations and warranties of the Company in this Agreement shall be true and correct as of the date when made and as of the Closing Date as though first made at that time (except for representations and warranties that speak of a specific date, which need only be true and correct as of such date). (b) PERFORMANCE BY THE COMPANY. The Company shall have performed, satisfied and complied in all material respects with all covenants and agreements required by the Transaction Documents to be performed, satisfied or complied with by the Company at or prior to the Closing Date. (c) DELIVERY OF CLOSING ITEMS. The Company shall have delivered to the Purchasers the items required to be delivered pursuant to Section 2.3(a). (d) NO SUSPENSION OF TRADING IN OR DELISTING OF COMMON STOCK. The Common Stock shall be authorized for trading or quotation on the Trading Market and trading in the Common Stock shall not have been suspended by the Commission or the Trading Market at any time from the date of execution of this Agreement through the Closing Date. The Company shall not have received any notice from the Trading Market threatening to delist the Common Stock from the Trading Market. 6

(e) ANNUAL REPORT ON FORM 10-K. The Company shall have filed its Annual Report on Form 10-K for the fiscal year ended April 30, 2002 (the "FORM 10-K") on a timely basis (as determined under the General Instructions I.A. 3(b) of Form S-3 promulgated under the Securities Act and Rule 12(b)-25(b) under the Exchange Act). (f) AUDITOR'S REPORT. The report of the Company's auditors prepared in accordance with Rule 2-02 of Regulation S-X, contained in the financial statements included in the Form 10-K shall not contain a "going concern" or similar opinion. (g) COMPLIANCE CERTIFICATE. The Company shall have delivered to or as directed by the Purchasers, an Officer's Certificate signed by the Company's Chief Executive Officer, dated as of Closing Date, certifying that the Company has satisfied the conditions set forth in Sections 2.4(a)-(f). ARTICLE III. REPRESENTATIONS AND WARRANTIES 3.1. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company hereby makes the following representations and warranties to each Purchaser: (a) SUBSIDIARIES. The Company has no direct or indirect subsidiaries other than those listed in SCHEDULE 3.1(A). Except as disclosed in SCHEDULE 3.1(A), the Company owns, directly or indirectly, all of the capital stock of each Subsidiary free and clear of any lien, charge, security interest, encumbrance, right of first refusal or other restriction (collectively, "LIENS"), and all the issued and outstanding shares of capital stock of each Subsidiary are validly issued and are fully paid, non-assessable and free of preemptive and similar rights. (b) ORGANIZATION AND QUALIFICATION. Each of the Company and each Subsidiary is an entity duly incorporated or otherwise organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization (as applicable), with the requisite power and authority to own and use its properties and assets and to carry on its business as currently conducted. Neither the Company nor any Subsidiary is in violation of any of the provisions of its respective certificate or articles of incorporation, bylaws or other organizational or charter documents. Each of the Company and each Subsidiary is duly qualified to conduct business and is in good standing as a foreign corporation or other entity in each jurisdiction in which the nature of the business conducted or property owned by it makes such qualification necessary, except where the failure to be so qualified or in good standing, as the case may be, could not, individually or in the aggregate have or reasonably be expected to result in: (i) an adverse effect on the legality, validity or enforceability of any Transaction Document, (ii) a material adverse effect on the results of operations, assets, prospects, business or condition (financial or otherwise) of the Company and the Subsidiaries, taken as a whole, or (iii) an adverse impairment to the Company's ability to perform on a timely basis its obligations under any Transaction Document (any of (i), (ii) or (iii), a "MATERIAL ADVERSE EFFECT"). 7

(c) AUTHORIZATION; ENFORCEMENT. The Company has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by each of the Transaction Documents and otherwise to carry out its obligations thereunder. The execution and delivery of each of the Transaction Documents by the Company and the consummation by it of the transactions contemplated thereby have been duly authorized by all necessary corporate action on the part of the Company and no further action is required by the Company in connection therewith. Each Transaction Document has been (or upon delivery have been) duly executed by the Company and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Company enforceable against the Company in accordance with its terms. (d) NO CONFLICTS. The execution, delivery and performance of the Transaction Documents by the Company and the consummation by the Company of the transactions contemplated thereby do not and will not: (i) conflict with or violate any provision of the Company's or any Subsidiary's certificate or articles of incorporation, bylaws or other organizational or charter documents, or (ii) conflict with, or constitute a default (or an event that with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation (with or without notice, lapse of time or both) of, any agreement, credit facility, debt or other instrument (evidencing a Company or Subsidiary debt or otherwise) or other understanding to which the Company or any Subsidiary is a party or by which any property or asset of the Company or any Subsidiary is bound or affected, or (iii) result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental authority to which the Company or a Subsidiary is subject (including federal and state securities laws and regulations), or by which any property or asset of the Company or a Subsidiary is bound or affected; except in the case of each of clauses (ii) and (iii), such as could not, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect. (e) FILINGS, CONSENTS AND APPROVALS. Neither the Company nor any Subsidiary is required to obtain any consent, waiver, authorization or order of, give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority or other Person in connection with the execution, delivery and performance by the Company of the Transaction Documents, other than: (i) the filing of appropriate UCC financing statements with the appropriate states pursuant to the Security Agreement, (ii) the filing of the Form D with the Commission and any applicable blue sky filings; (iii) the filing with the Commission of one or more Registration Statements and (iv) the application with the Trading Market for the listing of the Common Shares, Underlying Shares and Warrant Shares for trading thereon in the time and manner required thereby (collectively, the "REQUIRED Approvals"). (f) ISSUANCE OF THE SECURITIES. The Securities are duly authorized and, when issued and paid for in accordance with the Transaction Documents, will be duly and validly issued, fully paid and non-assessable, free and clear of all Liens. The Company has reserved from its duly authorized capital stock the maximum number of shares of Common Stock issuable pursuant to this Agreement, the Debentures, the Warrants and the Adjustment Warrants in order to issue the full number of Underlying Shares and Warrant Shares as are or may become issuable in accordance with the terms of the Debentures, the Warrants and the Adjustment Warrants, ignoring any limits on the number of shares of Common Stock 8

that may be owned by the Purchasers at any one time and assuming that (i) any previously unconverted Debentures are held until the third anniversary of the Closing Date and (ii) the conversion price of the Debentures and the exercise price of the Warrants at all times on and after the date of determination equals 100% of the actual conversion price and exercise price, respectively, on the Trading Day immediately prior to the date of determination). (g) CAPITALIZATION. The number of shares and type of all authorized, issued and outstanding capital stock of the Company is set forth in SCHEDULE 3.1(G). No securities of the Company are entitled to preemptive or similar rights, and no Person has any right of first refusal, preemptive right, right of participation, or any similar right to participate in the transactions contemplated by the Transaction Documents. Except as a result of the purchase and sale of the Securities and the securities being purchased pursuant to the ZLP Purchase Agreement and the transaction contemplated thereby and except as disclosed in SCHEDULE 3.1(G), there are no outstanding options, warrants, scrip rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities, rights or obligations convertible into or exchangeable for, or giving any Person any right to subscribe for or acquire, any shares of Common Stock, or contracts, commitments, understandings or arrangements by which the Company or any Subsidiary is or may become bound to issue additional shares of Common Stock, or securities or rights convertible or exchangeable into shares of Common Stock. The issuance and sale of the Securities will not obligate the Company to issue shares of Common Stock or other securities to any Person (other than the Purchasers) and will not result in a right of any holder of Company securities to adjust the exercise, conversion, exchange or reset price under such securities. (h) SEC REPORTS; FINANCIAL STATEMENTS. The Company has filed all reports required to be filed by it under the Securities Act and the Exchange Act, including pursuant to Section 13(a) or 15(d) thereof, for the two years preceding the date hereof (or such shorter period as the Company was required by law to file such reports) (the foregoing materials being collectively referred to herein as the "SEC REPORTS" and, together with the Schedules to this Agreement, the "DISCLOSURE MATERIALS") on a timely basis or has received a valid extension of such time of filing and has filed any such SEC Reports prior to the expiration of any such extension. As of their respective dates, the SEC Reports complied in all material respects with the requirements of the Securities Act and the Exchange Act and the rules and regulations of the Commission promulgated thereunder, and none of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. The financial statements of the Company included in the SEC Reports comply in all material respects with applicable accounting requirements and the rules and regulations of the Commission with respect thereto as in effect at the time of filing. Such financial statements have been prepared in accordance with generally accepted accounting principles applied on a consistent basis during the periods involved ("GAAP"), except as may be otherwise specified in such financial statements or the notes thereto, and fairly present in all material respects the financial position of the Company and its consolidated subsidiaries as of and for the dates thereof and the results of operations and cash flows for the periods then ended, subject, in the case of unaudited statements, to normal, immaterial, year-end audit adjustments. 9

(i) MATERIAL CHANGES. Since the date of the latest audited financials included within the SEC Reports (except as disclosed in the SEC Reports): (i) there has been no event, occurrence or development relating to the Company or its Subsidiaries that has had or could reasonably be expected to result in a Material Adverse Effect, (ii) the Company has not incurred any liabilities (contingent or otherwise) other than: (A) trade payables and accrued expenses incurred in the ordinary course of business consistent with past practice and (B) liabilities not required to be reflected in the Company's financial statements pursuant to GAAP or required to be disclosed in filings made with the Commission, (iii) the Company has not altered its method of accounting or the identity of its auditors, (iv) the Company has not declared or made any dividend or distribution of cash or other property to its stockholders or purchased, redeemed or made any agreements to purchase or redeem any shares of its capital stock and (v) the Company has not issued any equity securities to any officer, director or Affiliate, except pursuant to existing Company stock option plans. The Company does not have pending before the Commission any request for confidential treatment of information. (j) LITIGATION. There is no action, suit, inquiry, notice of violation, proceeding or investigation pending or, to the knowledge of the Company, threatened against or affecting the Company, any Subsidiary or any of their respective properties before or by any court, arbitrator, governmental or administrative agency or regulatory authority (federal, state, county, local or foreign) (collectively, an "ACTION") which: (i) adversely affects or challenges the legality, validity or enforceability of any of the Transaction Documents or the Securities or (ii) could, if there were an unfavorable decision, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect. Neither the Company nor any Subsidiary, nor any officer thereof, is or has been, nor any director thereof is or has been for the last three years, the subject of any Action involving a claim of violation of or liability under federal or state securities laws or a claim of breach of fiduciary duty. There has not been, and, to the knowledge of the Company, there is not pending or contemplated, any investigation by the Commission involving the Company or any current or former director that was a director of the Company at any time during the last three years or officer of the Company. The Commission has not issued any stop order or other order suspending the effectiveness of any registration statement filed by the Company or any Subsidiary under the Exchange Act or the Securities Act. (k) LABOR RELATIONS. No material labor dispute exists or, to the knowledge of the Company, is imminent with respect to any of the employees of the Company. (l) COMPLIANCE. Neither the Company nor any Subsidiary: (i) is in default under or in violation of (and no event has occurred that has not been waived that, with notice or lapse of time or both, has had or could reasonably be expected to result in a default by the Company or any Subsidiary under), nor has the Company or any Subsidiary received notice of a claim that it is in default under or that it is in violation of, any indenture, loan or credit agreement or any other agreement or instrument to which it is a party or by which it or any of its properties is bound (whether or not such default or violation has been waived), (ii) is in violation of any order of any court, arbitrator or governmental body, or (iii) is or has been in violation of any statute, rule or regulation of any governmental authority, including without limitation all foreign, federal, state and local laws relating to taxes, environmental protection, occupational health and safety, product quality and safety and employment and labor matters, except in each case as could not, individually or in the aggregate, has had or could reasonably be expected to result in a Material Adverse Effect. 10

(m) REGULATORY PERMITS. The Company and the Subsidiaries possess all certificates, authorizations and permits issued by the appropriate federal, state, local or foreign regulatory authorities necessary to conduct their respective businesses as described in the SEC Reports, except where the failure to possess such permits would not, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect ("MATERIAL PERMITS"), and neither the Company nor any Subsidiary has received any notice of proceedings relating to the revocation or modification of any Material Permit. (n) TITLE TO ASSETS. The Company and the Subsidiaries have good and marketable title in fee simple to all real property owned by them that is material to their respective businesses and good and marketable title in all personal property owned by them that is material to their respective businesses, in each case free and clear of all Liens, except as set forth in SCHEDULE 3.1(N) and except for Liens as do not materially affect the value of such property and do not materially interfere with the use made and proposed to be made of such property by the Company and the Subsidiaries. Any real property and facilities held under lease by the Company and the Subsidiaries are held by them under valid, subsisting and enforceable leases of which the Company and the Subsidiaries are in compliance. (o) PATENTS AND TRADEMARKS. The Company and the Subsidiaries have, or have rights to use, all patents, patent applications, trademarks, trademark applications, service marks, trade names, copyrights, licenses and other similar rights that are necessary and material for use in connection with their respective businesses as described in the SEC Reports and which the failure to so could have, or reasonably be expected to result in, a Material Adverse Effect (collectively, the "INTELLECTUAL PROPERTY RIGHTS"). Except as set forth on Schedule 3.1(o), neither the Company nor any Subsidiary has received a written notice that the Intellectual Property Rights used by the Company or any Subsidiary violates or infringes upon the rights of any Person which if determined adversely to the Company would, individually or in the aggregate have or could reasonably be expected to result in a Material Adverse Effect. To the knowledge of the Company, (i) all such Intellectual Property Rights are enforceable and (ii) there is no existing infringement by another Person of any of the Intellectual Property Rights. (p) TRANSACTIONS WITH AFFILIATES AND EMPLOYEES. Except as set forth in SEC Reports, none of the officers or directors of the Company and, to the knowledge of the Company, none of the employees of the Company is presently a party to any transaction with the Company or any Subsidiary (other than for services as employees, officers and directors), including any contract, agreement or other arrangement providing for the furnishing of services to or by, providing for rental of real or personal property to or from, or otherwise requiring payments to or from any officer, director or such employee or, to the knowledge of the Company, any entity in which any officer, director, or any such employee has a substantial interest or is an officer, director, trustee or partner. (q) INTERNAL ACCOUNTING CONTROLS. The Company and the Subsidiaries maintain a system of internal accounting controls which the audit committee of the board of directors reasonably believes is sufficient to provide reasonable assurance that: (i) transactions are executed in accordance with management's 11

general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain asset accountability, (iii) access to assets is permitted only in accordance with management's general or specific authorization, and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences. (r) SOLVENCY. Assuming the closing of the transaction contemplated by the Transaction Documents and the ZLP Purchase Agreement: (i) the Company reasonably believes that the fair value of its assets exceeds the amount that will be required to be paid on or in respect of the Company's existing debts and other liabilities (including known contingent liabilities) as they mature and (ii) the current cash flow of the Company, together with the proceeds the Company would receive, were it to liquidate all of its assets, after taking into account all anticipated uses of the cash, would be sufficient to pay all amounts on or in respect of its debt when such amounts are required to be paid. The Company does not intend to incur debts beyond its ability to pay such debts as they mature (taking into account the timing and amounts of cash to be payable on or in respect of its debt). (s) CERTAIN FEES. Except for fees or commissions payable by the Company as set forth on SCHEDULE 3.1(S), no brokerage or finder's fees or commissions are or will be payable by the Company to any broker, financial advisor or consultant, finder, placement agent, investment banker, bank or other Person with respect to the transactions contemplated by this Agreement. The Purchasers shall have no obligation with respect to any fees or with respect to any claims made by or on behalf of other Persons for fees of a type contemplated in this Section that may be due in connection with the transactions contemplated by this Agreement. (t) PRIVATE PLACEMENT. Assuming the accuracy of the Purchasers representations and warranties set forth in Section 3.2(b)-(e), no registration under the Securities Act is required for the offer, issuance and sale of the Securities by the Company to the Purchasers as contemplated hereby, and the offer and sale of the Securities hereunder will not be integrated with any offers or sales of other securities by the Company. (u) FORM S-3 ELIGIBILITY. The Company is eligible to utilize Form S-3 to register the resales of its Common Stock. (v) LISTING AND MAINTENANCE REQUIREMENTS. Except as set forth in the SEC Reports, the Company has not, in the two years preceding the date hereof, received notice (written or oral) from any Trading Market on which the Common Stock is or has been listed or quoted to the effect that the Company is not in compliance with the listing or maintenance requirements of such Trading Market. Except for the maintenance of the $1.00 minimum bid price (pursuant to the rules and regulations of the Nasdaq Stock Market), the Company is currently in compliance with all such listing and maintenance requirements. The issuance and sale of the Securities hereunder does not contravene the rules and regulations of the Trading Market and no approval of the shareholders of the Company is required for the Company to issue and deliver to the Purchasers the maximum number of shares of Common Stock contemplated by this Agreement, including by reason of the issuance of shares of Common Stock upon conversion in full of the Debentures and the issuance of the Warrant Shares upon exercise in 12

full of the Warrants and Adjustment Warrants, if an, assuming that (i) any previously unconverted Debentures are held until the third anniversary of the Closing Date and (ii) the conversion price of the Debentures and the exercise price of the Warrants at all times on and after the date of determination equals 100% of the actual conversion price and exercise price, respectively, on the Trading Day immediately prior to the date of determination). (w) REGISTRATION RIGHTS. Except for the registration rights granted pursuant to the ZLP Purchase Agreement and the transactions contemplated thereby and as described in SCHEDULE 3.1(W), the Company has not granted or agreed to grant to any Person any rights (including "piggy back" registration rights) to have any securities of the Company registered with the Commission or any other governmental authority that have not been satisfied. (x) INVESTMENT COMPANY. The Company is not, and is not an Affiliate of, an "investment company" within the meaning of the Investment Company Act of 1940, as amended. (y) RANKING OF DEBENTURES. Except as set forth on SCHEDULE 3.1(Y), no Indebtedness of the Company is senior to or ranks pari pasu with the Debentures in right of payment, whether with respect of payment of redemptions, interest, damages or upon liquidation or dissolution or otherwise. (z) APPLICATION OF TAKEOVER PROTECTIONS. The Company has taken all necessary action, if any, in order to render inapplicable any control share acquisition, business combination, poison pill (including any distribution under a rights agreement) or other similar anti-takeover provision under the Company's Certificate of Incorporation (or similar charter documents) or the laws of its state of incorporation that is or could become applicable to the Purchasers as a result of the Purchasers and the Company fulfilling their obligations or exercising their rights under the Transaction Documents, including without limitation the Company's issuance of the Securities and the Purchasers' ownership of the Securities. (aa) DISCLOSURE. Except for the information provided to a Purchaser pursuant to one or more confidentiality agreements, the Company confirms that neither it nor any other Person acting on its behalf has provided any of the Purchasers or their agents or counsel with any information that constitutes or might constitute material, non-public information. The Company understands and confirms that the Purchasers will rely on the foregoing representations in effecting transactions in securities of the Company. All representations and warranties of the Company set forth in this Agreement, including the Schedules to this Agreement, and the other Transaction Documents are true and correct and do not contain any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading. 3.2. REPRESENTATIONS AND WARRANTIES OF EACH PURCHASER. Each Purchaser hereby, for itself and for no other Purchaser, represents and warrants to the Company as follows: (a) ORGANIZATION; AUTHORITY. Such Purchaser is an entity duly organized, validly existing and in good standing under the laws of the jurisdiction of its organization with the requisite corporate or partnership power and authority to enter into and to consummate the transactions 13

contemplated by the Transaction Documents and otherwise to carry out its obligations thereunder. The purchase by such Purchaser of its Securities pursuant to the terms hereof has been duly authorized by all necessary corporate action on the part of such Purchaser. Each of Transaction Document to which such Purchaser is a party has been duly executed by such Purchaser, and, when delivered by such Purchaser in accordance with the terms hereof, will constitute the valid and legally binding obligation of such Purchaser, enforceable against it in accordance with its terms. (b) INVESTMENT INTENT. Such Purchaser is acquiring the Securities as principal for its own account for investment purposes only and not with a view to or for distributing or reselling such Securities or any part thereof, without prejudice, however, to such Purchaser's right, subject to the provisions of this Agreement, at all times to sell or otherwise dispose of all or any part of such Securities pursuant to an effective registration statement under the Securities Act or under an exemption from such registration and in compliance with applicable federal and state securities laws. Nothing contained herein shall be deemed a representation or warranty by such Purchaser to hold Securities for any period of time. Such Purchaser is acquiring the Securities hereunder in the ordinary course of its business. Such Purchaser does not have any agreement or understanding, directly or indirectly, with any Person to distribute any of the Securities. (c) PURCHASER STATUS. At the time such Purchaser was offered the Securities, it was, and at the date hereof it is, and on each date on which it exercises the Warrants, it will be, either (i) a "qualified institutional buyer" as defined in Rule 144A under the Securities Act or (ii) an institutional "accredited investor" as defined in Rule 501(a) under the Securities Act. Such Purchaser has not been formed solely for the purpose of acquiring the Securities. Such Purchaser is not a registered broker-dealer under Section 15 of the Exchange Act. (d) EXPERIENCE OF SUCH PURCHASER. Such Purchaser, either alone or together with its representatives, has such knowledge, sophistication and experience in business and financial matters so as to be capable of evaluating the merits and risks of the prospective investment in the Securities, and has so evaluated the merits and risks of such investment. Such Purchaser is able to bear the economic risk of an investment in the Securities and, at the present time, is able to afford a complete loss of such investment. (e) GENERAL SOLICITATION. To the knowledge of such Purchaser, such Purchaser is not purchasing the Securities as a result of any advertisement, article, notice or other communication regarding the Securities published in any newspaper, magazine or similar media or broadcast over television or radio or presented at any seminar or any other general solicitation or general advertisement. (f) ACCESS TO INFORMATION. Such Purchaser acknowledges that it has reviewed the Disclosure Materials and has been afforded: (i) the opportunity to ask such questions as it has deemed necessary of, and to receive answers from, representatives of the Company concerning the terms and conditions of the offering of the Securities and the merits and risks of investing in the Securities; (ii) access to information about the Company and the Subsidiaries and their respective financial condition, results of operations, business, properties, management and prospects sufficient to enable it to evaluate its investment; and (iii) the opportunity to obtain such additional information that 14

the Company possesses or can acquire without unreasonable effort or expense that is necessary to make an informed investment decision with respect to the investment. Neither such inquiries nor any other investigation conducted by or on behalf of such Purchaser or its representatives or counsel shall modify, amend or affect such Purchaser's right to rely on the truth, accuracy and completeness of the Disclosure Materials and the Company's representations and warranties contained in the Transaction Documents. The Company acknowledges and agrees that no Purchaser makes or has made any representations or warranties with respect to the transactions contemplated hereby other than those specifically set forth in this Section 3.2. ARTICLE IV. OTHER AGREEMENTS OF THE PARTIES 4.1. TRANSFER RESTRICTIONS. (a) The Securities may only be disposed of in compliance with state and federal securities laws. In connection with any transfer of the Securities other than pursuant to an effective registration statement, to the Company, to an Affiliate of a Purchaser who is an "accredited investor" as defined in Rule 501(a) under the Securities Act or in connection with a pledge as contemplated in Section 4.1(b), the Company may require the transferor thereof to provide to the Company an opinion of counsel selected by the transferor, the form and substance of which opinion shall be reasonably satisfactory to the Company, to the effect that such transfer does not require registration of such transferred Securities under the Securities Act. As a condition of transfer, any such transferee shall agree in writing to be bound by the terms of this Agreement and shall have the rights of a Purchaser under this Agreement, the Registration Rights Agreement, and, if such transfer is of all or a portion of the Debentures, Warrants or Adjustment Warrants held by such Purchaser, as a holder of such Debentures, Warrants, or Adjustment Warrants as the case may be. If requested by a Purchaser (or any subsequent transferee), the Company shall use its best efforts to effect such transfer of the Securities and shall file a prospectus supplement or other disclosure document as may be required in order to permit such transferee to utilize a Registration Statement to make registered resales of the Underlying Shares and Warrant Shares. (b) The Purchasers agree to the imprinting, so long as is required by this SECTION 4.1(b), of the following legend on the certificates evidencing the Securities: [NEITHER] THESE SECURITIES [NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE [CONVERTIBLE][EXERCISABLE]] HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. 15

The Company acknowledges and agrees that a Purchaser may from time to time pledge pursuant to a bona fide margin agreement or grant a security interest in some or all of the Securities and, if required under the terms of such arrangement, such Purchaser may transfer pledged or secured Securities to the pledgees or secured parties. Such a pledge or transfer would not be subject to approval or consent of the Company and no legal opinion of legal counsel to the pledgee, secured party or pledgor shall be required in connection therewith. Further, no notice shall be required of such pledge. At the appropriate Purchaser's expense, the Company will execute and deliver such reasonable documentation as a pledgee or secured party of Securities may reasonably request in connection with a pledge or transfer of the Securities including the preparation and filing of any required prospectus supplement under Rule 424(b)(3) of the Securities Act or other applicable provision of the Securities Act to appropriately amend the list of Selling Stockholders thereunder. (c) Certificates evidencing Common Shares, Warrant Shares and Underlying Shares shall not contain any legend (including the legend set forth in Section 4.1(b)): (i) while a registration statement (including a Registration Statement) covering the resale of such security is effective under the Securities Act, or (ii) following any sale of such Common Shares, Warrant Shares or Underlying Shares pursuant to Rule 144, or (iii) if such Common Shares, Warrant Shares or Underlying Shares are eligible for sale under Rule 144(k), or (iv) if such legend is not otherwise required under applicable requirements of the Securities Act (including judicial interpretations and pronouncements issued by the Staff of the Commission). The Company shall cause its counsel to issue the legal opinion included in the Transfer Agent Instructions to the Company's transfer agent on the Effective Date if requested by a holder thereof, and on any other date on which legends on stock certificates are not required under this Section 4.1(c). If all or any portion of the Debentures is converted at a time when there is a effective registration statement to cover the resale of the Underlying Shares, such Underlying Shares shall be issued free of all legends and if all or any portion of a Warrant is exercised at a time when there is a effective registration statement to cover the resale of the Warrant Shares, such Warrant Shares shall be issued free of all legends. The Company agrees that following the Effective Date or at such time as such legend is no longer required under this Section 4.1(c), it will, no later than three Trading Days following the delivery by a Purchaser to the Company or the Company's transfer agent of a certificate representing Common Shares, Warrant Shares or Underlying Shares issued with a restrictive legend, deliver or cause to be delivered to such Purchaser a certificate representing such Common Shares, Warrant Shares or Underlying Shares that is free from all restrictive and other legends. The Company may not make any notation on its records or give instructions to any transfer agent of the Company that enlarge the restrictions on transfer set forth in this Section. 16

4.2. FURNISHING OF INFORMATION. As long as any Purchaser owns Securities, the Company covenants to timely file (or obtain extensions in respect thereof and file within the applicable grace period) all reports required to be filed by the Company after the date hereof pursuant to the Exchange Act. Upon the request of any such Person, the Company shall deliver to such Person a written certification of a duly authorized officer as to whether it has complied with the preceding sentence. As long as any Purchaser owns Securities, if the Company is not required to file reports pursuant to such laws, it will prepare and furnish to the Purchasers and make publicly available in accordance with Rule 144(c) such information as is required for the Purchasers to sell the Underlying Shares and Warrant Shares under Rule 144. 4.3. INTEGRATION. The Company shall not, and shall use its best efforts to ensure that no Affiliate of the Company shall, sell, offer for sale or solicit offers to buy or otherwise negotiate in respect of any security (as defined in Section 2 of the Securities Act) that would be integrated with the offer or sale of the Securities in a manner that would require the registration under the Securities Act of the offer and sale of the Securities to the Purchasers, or that would be integrated with the offer or sale of the Securities for purposes of the rules and regulations of any Trading Market, if such integration would result in a violation of any such rule or regulation. 4.4. INCREASE IN AUTHORIZED SHARES. If on any date the Company would be, if notice of exercise or conversion were to be delivered on such date, precluded from issuing the number of Warrant Shares or Underlying Shares, as the case may be, issuable upon exercise in full of all of the Warrants and Adjustment Warrants and issuable upon conversion in full of the Debentures due to the unavailability of a sufficient number of authorized but unissued or reserved shares of Common Stock (ignoring any limits on the number of shares of Common Stock that may be owned by the Purchasers at any one time and assuming (i) that any previously unconverted Debentures are held until the third anniversary of the Closing Date and all interest thereon are paid in shares of Common Stock and (ii) the conversion price of the Debentures and the exercise price of the Warrants at all times on and after the date of determination equals 100% of the actual conversion price and exercise price, respectively, on the Trading Day immediately prior to the date of determination), then the Board of Directors of the Company shall promptly prepare and mail to the stockholders of the Company proxy materials requesting authorization to amend the Company's certificate of incorporation to increase the number of shares of Common Stock which the Company is authorized to issue so as to provide enough shares for issuance of the Warrant Shares and Underlying Shares. In connection therewith, the Board of Directors shall (a) adopt proper resolutions authorizing such increase in authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain stockholder approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 60th day after delivery of the proxy materials relating to such meeting) and (c) within five Business Days of obtaining such stockholder authorization, file an appropriate amendment to the Company's certificate or articles of incorporation to evidence such increase. 4.5. SUBSEQUENT PLACEMENTS AND REGISTRATIONS. (a) Prior to the Effective Date, the Company will not, directly or indirectly, offer, issue, sell, grant any option to purchase, or otherwise dispose of (or announce any offer, issuance, sale, grant or any option to purchase or other disposition of) any Common Stock, Common Stock Equivalents or 17

any of its Subsidiaries' equity or Common Stock Equivalents, including the issuance of Common Stock pursuant to a primary registration statement or pursuant to an equity line of credit or similar transaction (such offer, issuance, sale, grant, disposition or announcement being referred to as "SUBSEQUENT PLACEMENT"). (b) Following the Effective Date through and including the expiration of the first anniversary of the Effective Date, the Company shall not effect a Subsequent Placement, unless (i) the Company delivers to each Purchaser a written notice (the "SUBSEQUENT PLACEMENT NOTICE") of its intention to effect such Subsequent Placement, which Subsequent Placement Notice shall describe in reasonable detail the proposed terms of such Subsequent Placement, the amount of proceeds intended to be raised thereunder, the Person with whom such Subsequent Placement is proposed to be effected, and attached to which shall be a term sheet or similar document relating thereto and (ii) such Purchaser shall not have notified the Company by 6:30 p.m. (New York City time) on the fifth Trading Day after its receipt of the Subsequent Placement Notice of its willingness to provide (or to cause its designee to provide), subject to completion of mutually acceptable documentation, all or part of such financing to the Company on the same terms set forth in the Subsequent Placement Notice. If the Purchasers shall fail to so notify the Company of their willingness to participate in full in the Subsequent Placement, the Company may effect the remaining portion of such Subsequent Placement on the terms and to the Persons set forth in the Subsequent Placement Notice. The Company shall provide the Purchasers with a second Subsequent Placement Notice and the Purchasers will again have the right of first refusal set forth in this Section 4.5(a), if the Subsequent Placement subject to the initial Subsequent Placement Notice is not consummated for any reason on the terms set forth in such Subsequent Notice within 30 Trading Days after the date of the initial Subsequent Placement Notice with the Person identified in the Subsequent Placement Notice. If the Purchasers indicate a willingness to provide financing in excess of the amount set forth in the Subsequent Placement Notice, then each Purchaser will be entitled to provide financing pursuant to such Subsequent Placement Notice up to an amount equal to such Purchaser Percentage of the financing, but the Company shall not be required to accept financing from the Purchasers in an amount in excess of the amount set forth in the Subsequent Placement Notice. (c) The one year period set forth in Section 4.5(b) shall be extended for the number of Trading Days during such period in which (i) trading in the Common Stock is suspended by any Trading Market, or (ii) following the Effective Date, the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the Purchasers for the resale of the Common Shares, Underlying Shares and the Warrant Shares. (d) The restrictions contained in Sections 4.5(a) and (b) shall not apply to any grant or issuance by the Company of (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction or (iv) the issuance of Common Stock to any Person approved by the Purchasers (such Person, an "APPROVED PURCHASER") of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) pursuant to Registration Statement No. 333- 71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the ZLP Purchase Agreement and the transactions contemplated thereby. 18

(e) Notwithstanding anything herein to the contrary, the Company may not issue, agree to issue, or enter into any arrangement pursuant to which it may issue at any time, shares of Common Stock or Common Stock Equivalents that would entitle any holder thereof to receive at any time shares of Common Stock at, in any such case, a price that is less than the Per Share Purchase Price, unless prior to the earlier to occur of the entering into of such agreement or such issuance, the Company obtains the approval of its shareholders pursuant to the rules and regulations of the Nasdaq Stock Market, Inc. ("NASDAQ") (including, without limitation, NASD Rules 4350(i), NASD IM-4300, NASD IM-4310-2, and Rule 4350(i)): for (i) the transactions contemplated by the Transaction Documents and the ZLP Purchase Agreement, including the sale, issuance and potential issuance of the securities issued and issuable thereunder, including the Securities issued pursuant to this Agreement, as well as the shares of Common Stock issuable in accordance with the Debentures, the Warrants and Adjustment Warrants, (ii) the issuance under the Transaction Documents and the ZLP Purchase Agreement (and the transactions contemplated thereby) of in excess of 19.99% of the shares of Common Stock outstanding prior to the Closing Date at a price that is less than the greater of book or market value of the Common Stock, and/or (iii) the potential issuance of securities of the Company having sufficient voting power to result in a change of control of the Company as described under the rules of Nasdaq. The Company understands and agrees that the shares of Common Stock that have been issued or that may be issued to and then held by any Purchaser or any of such Purchaser's Affiliates may not cast votes on such matters. In the event that the Company enters into or seeks to enter into a transaction described in this Section 4.5(e), then the Company shall deposit into an escrow account with an escrow agent (which account and agent shall be reasonably satisfactory to the Purchasers) an amount equal to the aggregate principal amount of outstanding Debentures plus all accrued and unpaid interest thereon plus all liquidated damages and other amounts payable thereon, which amount shall be paid to the holders of the Debentures in the event that the Company fails to obtain the approval of the stockholders with respect to such transaction. 4.6. ADJUSTMENT WARRANT. (a) If at any time prior to the 18th month anniversary of the Effective Date, (a) the Company shall issue or agree to issue shares of Common Stock at a price below the Per Share Purchase Price or (b) the Company or any of its subsidiaries shall issue any Common Stock Equivalents or shall enter an agreement to issue Common Stock Equivalents, that entitle any Person to acquire shares of Common Stock at a price per share less than the Per Share Purchase Price (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Per Share, such issuance shall be deemed to have occurred for less than the Per Share Purchase Price), then the Per Share Purchase Price shall be adjusted 19

automatically for the purposes of this Section to equal the price at which the shares of Common Stock or Common Stock Equivalents were deemed issued under this Section (such price, the "ADJUSTED PRICE") and the Company shall, within two Trading Days of the date of such issuance or agreement to issue Common Stock or Common Stock Equivalents, deliver a notice to each Purchaser who acquired Common Shares at the Closing in accordance with Section 2.3(a)(i) of the number of Adjustment Shares (as hereinafter defined) issuable under such Purchaser's Adjustment Warrant, giving the Purchaser the right to purchase, for par value of the Common Stock, a number of shares of Common Stock (such shares, the "ADJUSTMENT SHARES") equal to: (1) the number of Common Shares that would have been issued to such Purchaser on the Closing Date at the Adjusted Price less (2) the number of Common Shares actually issued to such Purchaser on the Closing Date. The Company shall notify the Purchasers in writing of its issuance of any such Common Stock or Common Stock Equivalents by the end of the day on which the Common Stock or Common Stock Equivalents are first issued. The number of Adjustment Shares shall be calculated on each date of the issuance of the Common Stock or Common Stock Equivalent at issue, without regard to a delay in the conversion, exchange or other adjustment or resetting provision applicable to such Common Stock Equivalent, which Adjusted Price shall continue for as long as the Purchaser holds such Adjustment Warrant. Such notice will be delivered whenever such Common Stock or Common Stock Equivalents are issued. (b) If the Company or any subsidiary issues Common Stock Equivalents at a price per share that floats or resets or otherwise varies or is subject to adjustment based on market prices of the Common Stock (a "FLOATING PRICE SECURITY"), then for purposes of applying the preceding paragraph in connection with any subsequent exercise, the Adjusted Price will be deemed to equal the lowest price per share at which any holder of such Floating Price Security is entitled to acquire shares of Common Stock (regardless of whether any such Purchaser actually acquires any shares on such date). (c) The provisions contained in Section 4.6(a) shall not apply to any grant or issuance by the Company of (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction or (iv) the issuance of Common Stock to any Approved Purchaser of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) pursuant to Registration Statement No. 333-71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the ZLP Purchase Agreement (or the transactions contemplated thereby). (d) The 18th month period set forth in this Section shall be extended for the number of Trading Days during such period in which (i) trading in the Common Stock is suspended by any Trading Market, or (ii) following the Effective Date, the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the Purchasers for the resale of the Common Shares, Underlying Shares and the Warrant Shares. 20

(e) The Company covenants and undertakes to file a registration statement covering the resale by the Purchasers (or their transferees) of the shares of common stock issuable upon exercise of each Adjustment Warrant by the 30th day following such issuance of an Adjustable Warrant and, such registration statement shall be treated as a "Registration Statement" under the Registration Rights Agreement and the Purchasers and the Company shall be accorded the obligations and rights under the Registration Rights Agreement with respect to such registration statement. In addition, the Adjustment Warrant shall be entitled to full piggy-back registration rights on all future or then pending Company registration statements. (f) If, at any time prior to the 18th month anniversary following the Effective Date (as such period may be extended pursuant to this Section 4.6): (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then any successor to the Company or surviving entity in such Fundamental Transaction shall continue to be bound by the obligation to increase the number of Adjustment Shares issuable under the Adjustment Warrant under and in accordance with this Section 4.6 and to honor all such Adjustment Warrants. 4.7. SECURITIES LAWS DISCLOSURE; PUBLICITY. No later than the Business Day immediately following the Closing Date, the Company shall issue a press release and file a Current Report on Form 8-K, in each case reasonably acceptable to the Purchasers disclosing all material terms of the transactions contemplated hereby. The Company and the Purchasers shall consult with each other in issuing any press releases with respect to the transactions contemplated hereby. Notwithstanding the foregoing, other than in any registration statement filed pursuant to the Registration Rights Agreement and filings related thereto, the Company shall not publicly disclose the name of any Purchaser, or include the name of any Purchaser in any filing with the Commission or any regulatory agency or Trading Market, without the prior written consent of such Purchaser, except to the extent such disclosure is required by law or Trading Market regulations, in which case the Company shall provide the Purchasers with prior notice of such disclosure. 4.8. INDEMNIFICATION OF PURCHASERS. The Company hereby indemnifies and holds the Purchasers and their directors, officers, shareholders, partners, employees and agents (each, a "PURCHASER PARTY") harmless from any and all losses, liabilities, obligations, claims, contingencies, damages, costs and expenses, including all judgments, amounts paid in settlements, court costs and reasonable attorneys' fees and costs of investigation (collectively, "LOSSES") that any such Purchaser Party may suffer or incur as a result of or relating to (a) any misrepresentation, breach or inaccuracy, or any allegation by a third 21

party that, if true, would constitute a breach or inaccuracy, of any of the representations, warranties, covenants or agreements made by the Company in this Agreement or in the other Transaction Documents; or (b) any cause of action, suit or claim brought or made against such Purchaser Party and solely arising out of or solely resulting from the execution, delivery, performance or enforcement of this Agreement or any of the other Transaction Documents (other than due to the gross negligence or willful misconduct of the Purchaser Party). The Company will reimburse such Purchaser for its reasonable legal and other expenses (including the cost of any investigation, preparation and travel in connection therewith) incurred in connection therewith, as such expenses are incurred. The Purchaser Party may not, without the prior written consent of the Company, agree to any settlement of any claim or action with respect to which the Company is required to indemnify the Purchaser Party pursuant to this Section 4.8. 4.9. SHAREHOLDERS RIGHTS PLAN. No claim will be made or enforced by the Company or any other Person that any Purchaser is an "Acquiring Person" under any shareholders rights plan or similar plan or arrangement in effect or hereafter adopted by the Company, or that any Purchaser could be deemed to trigger the provisions of any such plan or arrangement, by virtue of receiving the Securities under the Transaction Documents or under any other agreement between the Company and the Purchasers. 4.10. NON-PUBLIC INFORMATION. The Company covenants and agrees that neither it nor any other Person acting on its behalf will provide any Purchaser or its agents or counsel with any information that the Company believes constitutes material non-public information, unless prior thereto such Purchaser shall have executed a written agreement regarding the confidentiality and use of such information. The Company understands and confirms that each Purchaser shall be relying on the foregoing representations in effecting transactions in securities of the Company. 4.11. USE OF PROCEEDS. The Company shall use the net proceeds from the sale of the Securities hereunder for research and development or working capital purposes that are consistent with the Company's business as at the Closing Date (as reported in the SEC Reports) and not for the satisfaction of any portion of the Company's debt (other than payment of trade payables in the ordinary course of the Company's business and prior practices), nor to redeem any Company equity or equity equivalent securities, nor to settle any outstanding litigation nor to extend any loans to its directors or senior management. 4.12. LOCK-UP LETTER. On the Closing Date, the Company shall issue a stop-transfer order to the Company's transfer agent, which order shall be acknowledged by the transfer agent, in connection with each of the Lock-Up Letter. 4.13. SECURED OBLIGATION. The payment obligations under the Debentures are secured pursuant to the Security Agreement and Intellectual Property Security Agreement. ARTICLE V. MISCELLANEOUS 5.1. FEES AND EXPENSES. Except as expressly set forth in the Transaction Documents, each party shall pay the fees and expenses of its advisers, counsel, accountants and other experts, if any, and all other expenses incurred by such party incident to the negotiation, preparation, execution, delivery and performance of this Agreement. The Company shall pay all stamp and other taxes and duties levied in connection with the sale of the Securities. 22

5.2. ENTIRE AGREEMENT. The Transaction Documents, together with the Exhibits and Schedules thereto, contain the entire understanding of the parties with respect to the subject matter hereof and supersede all prior agreements and understandings, oral or written, with respect to such matters, which the parties acknowledge have been merged into such documents, exhibits and schedules. 5.3. NOTICES. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Agreement later than 6:30 p.m. (New York City time) on any date and earlier than 11:59 p.m. (New York City time) on such date, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The address for such notices and communications shall be as follows: If to the Company: Peregrine Pharmaceuticals, Inc. 14272 Franklin Avenue Tustin, CA 92780 Facsimile No.: (714) 838-5817 Attn: Chief Financial Officer With a copy to: Jeffers, Shaff & Falk, LLP 18881 Von Karman Avenue, Suite 1400 Irvine, CA 92612 Facsimile No.: (949) 660-7799 Attn: Mark R. Ziebell, Esq. If to a Purchaser: To the address set forth under such Purchaser's name on the signature pages hereto. or such other address as may be designated in writing hereafter, in the same manner, by such Person. 5.4. AMENDMENTS; WAIVERS. No provision of this Agreement may be waived or amended except in a written instrument signed, in the case of an amendment, by the Company and the Purchasers holding a majority-in-interest of the Common Shares and Debentures issued at Closing or, in the case of a waiver, by the party against whom enforcement of any such waiver is sought. No waiver of any default with respect to any provision, condition or requirement of this Agreement shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in any manner impair the exercise of any such right. 23

5.5. CONSTRUCTION. The headings herein are for convenience only, do not constitute a part of this Agreement and shall not be deemed to limit or affect any of the provisions hereof. The language used in this Agreement will be deemed to be the language chosen by the parties to express their mutual intent, and no rules of strict construction will be applied against any party. 5.6. SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and inure to the benefit of the parties and their successors and permitted assigns. The Company may not assign this Agreement or any rights or obligations hereunder without the prior written consent of the Purchasers. Any Purchaser may assign any or all of its rights under this Agreement and the Registration Rights Agreement to any Person to whom such Purchaser assigns or transfers any Securities in accordance with the terms of this Agreement, provided such transferee agrees in writing to be bound, with respect to the transferred Securities, by the provisions hereof that apply to the "Purchasers." 5.7. NO THIRD-PARTY BENEFICIARIES. This Agreement is intended for the benefit of the parties hereto and their respective successors and permitted assigns and is not for the benefit of, nor may any provision hereof be enforced by, any other Person. 5.8. LIQUIDATED DAMAGES. The Company's obligations to pay any liquidated damages or other amounts owing under the Transaction Documents is a continuing obligation of the Company and shall not terminate until all unpaid liquidated damages and other amounts have been paid notwithstanding the fact that the instrument or security pursuant to which such liquidated damages or other amounts are due and payable shall have been canceled. Such liquidated damages are not to be construed as the sole damages for remedies available to the Persons entitled to the same. The parties hereby agree that all remedies and damages are cumulative. 5.9. GOVERNING LAW. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all Proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of the any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert in any Proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such Proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party 24

at the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby. If either party shall commence a Proceeding to enforce any provisions of a Transaction Document, then the prevailing party in such Proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such Proceeding. 5.10. SURVIVAL. The representations, warranties, agreements and covenants contained herein shall survive the Closing. 5.11. EXECUTION. This Agreement may be executed in two or more counterparts, all of which when taken together shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that both parties need not sign the same counterpart. In the event that any signature is delivered by facsimile transmission, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if such facsimile signature page were an original thereof. 5.12. SEVERABILITY. If any provision of this Agreement is held to be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Agreement shall not in any way be affected or impaired thereby and the parties will attempt to agree upon a valid and enforceable provision that is a reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Agreement. 5.13. RESCISSION AND WITHDRAWAL RIGHT. Notwithstanding anything to the contrary contained in (and without limiting any similar provisions of) the Transaction Documents, whenever any Purchaser exercises a right, election, demand or option under a Transaction Document and the Company does not timely perform its related obligations within the periods therein provided, then such Purchaser may rescind or withdraw, in its sole discretion from time to time upon written notice to the Company, any relevant notice, demand or election in whole or in part without prejudice to its future actions and rights. 5.14. REPLACEMENT OF SECURITIES. If any certificate or instrument evidencing any Securities is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation thereof, or in lieu of and substitution therefor, a new certificate or instrument, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested by the Company's transfer agent. The applicants for a new certificate or instrument under such circumstances shall also pay any reasonable third-party costs associated with the issuance of such replacement Securities. 5.15. REMEDIES. In addition to being entitled to exercise all rights provided herein or granted by law, including recovery of damages, each of the Purchasers and the Company will be entitled to specific performance under the Transaction Documents. Notwithstanding any other remedy herein permitted or provided under the Transaction Documents, the parties hereby agree to waive in any action for specific performance of any such obligation the defense that a remedy at law would be adequate. 25

5.16. PAYMENT SET ASIDE. To the extent that the Company makes a payment or payments to any Purchaser pursuant to any Transaction Document or a Purchaser enforces or exercises its rights thereunder, and such payment or payments or the proceeds of such enforcement or exercise or any part thereof are subsequently invalidated, declared to be fraudulent or preferential, set aside, recovered from, disgorged by or are required to be refunded, repaid or otherwise restored to the Company, a trustee, receiver or any other person under any law (including, without limitation, any bankruptcy law, state or federal law, common law or equitable cause of action), then to the extent of any such restoration the obligation or part thereof originally intended to be satisfied shall be revived and continued in full force and effect as if such payment had not been made or such enforcement or setoff had not occurred. 5.17. INDEPENDENT NATURE OF PURCHASERS' OBLIGATIONS AND RIGHTS. The obligations of each Purchaser under any Transaction Document are several and not joint with the obligations of any other Purchaser, and no Purchaser shall be responsible in any way for the performance of the obligations of any other Purchaser under any Transaction Document. Nothing contained herein or in any Transaction Document, and no action taken by any Purchaser pursuant thereto, shall be deemed to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Purchasers are in any way acting in concert or as a group with respect to such obligations or the transactions contemplated by the Transaction Document. Each Purchaser shall be entitled to independently protect and enforce its rights, including without limitation the rights arising out of this Agreement or out of the other Transaction Documents, and it shall not be necessary for any other Purchaser to be joined as an additional party in any proceeding for such purpose. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES FOLLOW] 26

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: /S/ EDWARD LEGERE ----------------------------- Name: Edward Legere Title: President & CEO [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES FOR PURCHASERS FOLLOWS] 27

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ JAMES W. SANTORI ----------------------------------- Name: James W. Santori Title: CFO Common Stock Investment Amount: $_____________ Debenture Investment Amount: $ 400,000 Address for Notice: OTATO L.P. c/o OTA Limited Partnership One Manhattanville Road Purchase, NY 10577 Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ STEVE DERBY -------------------------------- Name: Steve Derby Title: Managing Member Common Stock Investment Amount: $_____________ Debenture Investment Amount: $750,000 ----------------- Address for Notice: SDS Merchant Fund, LP c/o SDS Capital Partners 53 Forest Ave., 2nd Floor Old Greenwich, CT 06870 Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ MITCHELL D. KAYE ------------------------------------ Name: Mitchell D. Kaye Title: CIO, of Investment Manager Common Stock Investment Amount: $_____________ Debenture Investment Amount: $ 661,750 ------------------ Address for Notice: Xmark Fund, L.P. 152 W. 57th St., 21st FL New York, NY 10019 Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ MITCHELL D. KAYE ------------------------------------ Name: Mitchell D. Kaye Title: CIO, of Investment Manager Common Stock Investment Amount: $_____________ Debenture Investment Amount: $1,838,250 ----------------- Address for Notice: Xmark Fund, Ltd. 152 W. 57th St., 21st FL New York, NY 10019 Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ EWALD VOGT ------------------------------- Name: Ewald Vogt Title: Director Common Stock Investment Amount: $_____________ Debenture Investment Amount: $100,000 ----------------- Address for Notice: Cleveland Overseas Limited c/o GTF Global Trade and Fianance S.A. PO Box 932 St. Makusgasse 19 FL-9490 Vaduz / Liachtenstein / Europe Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ MITCHELL P. KOPIN -------------------------------------- Name: Mitchell P. Kopin Title: President - Downsview Capital The General Partner Common Stock Investment Amount: $900,000 ------------ Debenture Investment Amount: $______________ Address for Notice: Cranshire Capital, L.P. 666 Dundee Rd., Suite 1901 Northbrook, IL 60062 Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PURCHASER: By: /S/ KONRAD ACKERMAN ------------------------------ Name: Konrad Ackerman Title: Director Common Stock Investment Amount: $350,000 ------------ Debenture Investment Amount: $______________ Address for Notice: Alpha Capital Aktiengesellschaff 160 Central Park South, Suite 2701 New York, NY 10019 Facsimile No.: Telephone No.: Tax ID No.: With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 28

EXHIBIT 10.78 FORM OF CONVERTIBLE DEBENTURE UNDER SECURITIES PURCHASE AGREEMENT NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. ORIGINAL ISSUE DATE: AUGUST 9, 2002 No. CD-[ ] $[ ] PEREGRINE PHARMACEUTICALS, INC. 6% SECURED CONVERTIBLE DEBENTURE DUE AUGUST 8, 2005 THIS DEBENTURE is one of a series of duly authorized and issued debentures of PEREGRINE PHARMACEUTICALS, INC., a corporation organized under the laws of Delaware (the "COMPANY"), designated as its 6% Series A Convertible Debentures due August 8, 2005 in the aggregate principal amount of Three Million Seven Hundred Fifty Thousand Dollars ($3,750,000) (collectively, the "Debentures"). FOR VALUE RECEIVED, the Company promises to pay to the order of [debenture holderinvestor name] or its registered assigns (the "HOLDER") the principal sum of [investment amount] Dollars ($[ ]) and any additional sums due pursuant to the terms hereof, on August 8, 2005, or such earlier date as the Debentures are required or permitted to be repaid as provided hereunder (the "MATURITY Date"), and to pay interest to the Holder on the principal amount of this Debenture in accordance with the provisions hereof. This Debenture is subject to the following additional provisions. 1. DEFINITIONS. As used in this Debenture, the following terms shall have the meanings set forth in this Section 1: "AFFILIATE" means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common control with a Person, as such terms are used in and construed under Rule 144 under the Securities Act.

"BANKRUPTCY EVENT" means any of the following events: (a) the Company or any subsidiary thereof commences a case or other proceeding under any bankruptcy, reorganization, arrangement, adjustment of debt, relief of debtors, dissolution, insolvency or Liquidation or similar law of any jurisdiction relating to the Company or any subsidiary thereof; (b) there is commenced against the Company or any subsidiary thereof any such case or proceeding that is not dismissed within 60 days after commencement; (c) the Company or any subsidiary thereof is adjudicated insolvent or bankrupt or any order of relief or other order approving any such case or proceeding is entered; (d) the Company or any subsidiary thereof suffers any appointment of any custodian or the like for it or any substantial part of its property that is not discharged or stayed within 60 days; (e) the Company or any subsidiary thereof makes a general assignment for the benefit of creditors; (f) the Company or any subsidiary thereof fails to pay, or states that it is unable to pay or is unable to pay, its debts generally as they become due; (g) the Company or any subsidiary thereof calls a meeting of its creditors with a view to arranging a composition, adjustment or restructuring of its debts; or (h) the Company or any subsidiary thereof, by any act or failure to act, expressly indicates its consent to, approval of or acquiescence in any of the foregoing or takes any corporate or other action for the purpose of effecting any of the foregoing. "BLOOMBERG" means Bloomberg Financial L.P. (or its successor to reporting stock prices). "BUSINESS DAY" means any day except Saturday, Sunday and any day which shall be a legal holiday or a day on which banking institutions in the State of New York are authorized or required by law or other governmental action to close. "CLOSING DATE" shall have the meaning set forth in the Purchase Agreement. "CLOSING PRICE" means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed or quoted on an Eligible Market, the closing bid price per share of the Common Stock for such date (or the nearest preceding date if there is no such price on such date) on the Eligible Market on which the Common Stock is then listed or quoted; (b) if the Common Stock is not then listed or quoted on an Eligible Market and if prices for the Common Stock are then quoted on the OTC Bulletin Board, the closing bid price per share of the Common Stock for such date (or the nearest preceding date if there is no such price on such date) on the OTC Bulletin Board; (c) if the Common Stock is not then listed or quoted on an Eligible Market or the OTC Bulletin Board and if prices for the Common Stock are then reported in the "Pink Sheets" published by the National Quotation Bureau Incorporated (or a similar organization or agency succeeding to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported; or (d) in all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith by the Holder. "COMMISSION" means the Securities and Exchange Commission. "COMMON STOCK" means the Company's Common Stock, $.001 par value per share, and stock of any other class into which such shares may be reclassified or changed. -2-

"COMMON STOCK EQUIVALENTS" means any securities of the Company or any Subsidiary (as defined in the Purchase Agreement) which entitle the holder thereof to acquire Common Stock at any time, including without limitation, any debt, preferred stock, rights, options, warrants or other instrument that is at any time convertible into or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock or other securities that entitle the holder to receive, directly or indirectly, Common Stock. "COMPANY REDEMPTION PRICE" means the sum of (i) 150% of the outstanding principal amount of this Debenture plus (ii) all other amounts, interest and liquidated damages due in respect of this Debentures. "CONVERSION DATE" is the date specified in a Conversion Notice to effect conversions of Debentures under Section 5(a)(i), which date may not be prior to the date the Holder delivers such Conversion Notice. If no Conversion Date is specified in a Conversion Notice, then the Conversion Date for such notice shall be the date that such notice is deemed delivered hereunder. "CONVERSION PRICE" means $0.85 (subject to adjustment in accordance with Section 6(g)). "DISTRIBUTION" means, with respect to any Person, the declaration or payment of any dividends by such Person, or the purchase, redemption, retirement or other acquisition for value of any of its capital stock or other equity now or hereafter outstanding, or the making of any distribution of assets to its stockholders as such whether in cash, assets or in obligations of such Person, or the allocation or other setting apart of any sum for the payment of any dividend or distribution on, or for the purchase, redemption, retirement or other acquisition of any shares of its capital stock, or the making of any other distribution by reduction of capital or otherwise in respect of any shares of its capital stock. "EFFECTIVE DATE" means the date that the Registration Statement is first declared effective by the Securities and Exchange Commission. "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended. "ELIGIBLE MARKET" means whichever of the New York Stock Exchange, the American Stock Exchange, the Nasdaq National Market or the Nasdaq SmallCap Market on which the Common Stock is then listed or quoted. "EQUITY CONDITIONS" means, with respect to a specified issuance of Common Stock, that each of the following conditions is satisfied: (i) the number of authorized but unissued and otherwise unreserved shares of Common Stock is sufficient for such issuance; (ii) such shares of Common Stock are registered for resale by the Holder pursuant to an effective registration statement, and the prospectus thereunder is available for use by the Holder to sell such shares, or all such shares may be sold by the Holder without volume restrictions pursuant to Rule 144(k) under the Securities Act; (iii) the Common Stock is listed or quoted (and is not suspended from trading) on an Eligible Market and such shares of Common Stock are approved for listing on such Eligible Market upon issuance; (iv) such issuance would be permitted in full without violating Section 5(b)(iii) or the rules or regulations of the Eligible Market on which such shares are listed or quoted; (v) no Bankruptcy Event has occurred; (vi) no -3-

public announcement of a pending or proposed Sale Event that has not been approved by the Required Holders; (viii) the Company is not in default with respect to any material obligation hereunder or under any other Transaction Document; or (ix) no Event of Default nor any event that with the passage of time and without being cured would constitute an Event of Default which has occurred and not been cured. "EVENT OF DEFAULT" means the occurrence of any one or more of the following events (whatever the reason and whether it shall be voluntary or involuntary or effected by operation of law or pursuant to any judgment, decree or order of any court, or any order, rule or regulation of any administrative or governmental body): (i) any default in the payment of principal or liquidated damages in respect of any Debentures, as and when the same becomes due and payable (whether by acceleration or otherwise) or any default in the payment of interest in respect of any Debentures, within five Business Days of when the same becomes due and payable; (ii) the Company or any Subsidiary defaults in any of its obligations under any other debenture or any mortgage, credit agreement or other facility, indenture agreement, factoring agreement or other instrument under which there may be issued, or by which there may be secured or evidenced, any Indebtedness, whether such Indebtedness now exists or is hereafter created, and such default results in such Indebtedness becoming or being declared due and payable prior to the date on which it would otherwise become due and payable; (iii) a Bankruptcy Event; (iv) the Company shall fail for any reason to deliver certificates representing Underlying Shares issuable upon a conversion hereunder that comply with the provisions hereof prior to the fifth Business Day after the Conversion Date or the Company shall provide notice to any Holder, including by way of public announcement, at any time, of its intention not to comply with requests for conversion of Debentures in accordance with the terms hereof; (v) the Company shall fail for any reason to pay in full the amount of cash due pursuant to a Buy-In within seven days after notice therefor is delivered hereunder or shall fail to pay any liquidated damages due pursuant to the Transaction Documents within seven days of the date of the request for such payment; (vi) the Company shall fail to have available a sufficient number of authorized and unreserved shares of Common Stock to issue to such Holder upon a conversion hereunder; (vii) the Registration Statement shall not have been declared effective by the Commission on or prior to the 150th day after the Original Issue Date; (viii) during the Effectiveness Period (as defined in the Registration Rights Agreement), the effectiveness of the Registration Statement lapses for any reason or the Holder shall not be permitted to resell Registrable Securities (as defined in the Registration Rights Agreement) under the Registration Statement, in either case, for more than five consecutive Trading Days or an aggregate of eight Trading Days (which need not be consecutive Trading Days); -4-

(ix) an Event (as defined in the Registration Rights Agreement) shall not have been cured to the satisfaction of the Holder prior to the expiration of ten days from the Event Date (as defined in the Registration Rights Agreement) relating thereto (other than an Event resulting from a failure of a Registration Statement to be declared effective by the Commission on or prior to the 150th day after the Original Issue Date, which shall be covered by clause (vii) above); (x) the Company or any Subsidiary takes any Restricted Action without the prior written consent of the Required Holders; or (xi) the Company defaults in the timely performance of any other obligation under the Transaction Documents and such default continues uncured for a period of five Trading Days after the date on which notice of such default is first given to the Company by the Holder (it being understood that no prior notice need be given in the case of a default that cannot reasonably be cured within five Trading Days). "FUNDAMENTAL TRANSACTION" any (i) merger or consolidation of the Company with or into another Person, (ii) any sale of more than one-half of the assets of the Company (on an as valued basis) in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property. "INDEBTEDNESs" shall mean the principal amount of, premium, if any, profit participation, if any, and accrued and unpaid interest on and all other amounts and costs payable in respect of (a) indebtedness for money borrowed from others; (b) indebtedness guaranteed, directly or indirectly, in any manner, or in effect guaranteed, directly or indirectly, in any manner through an agreement, contingent or otherwise, to supply funds to, or in any other manner invest in the debtor, or to purchase indebtedness, or to purchase and pay for property if not delivered or pay for services if not performed, primarily for the purpose of enabling the debtor to make payment of the indebtedness or to assure the owners of the indebtedness against loss; (c) all indebtedness secured by any mortgage, lien, pledge, charge or other encumbrance upon property owned by the Company; (d) all indebtedness of such person created or arising under any conditional sale, lease (intended primarily as a financing device) or other title retention or security agreement with respect to property acquired by the Company even though the rights and remedies of the seller, lessor or lender under such agreement or lease in the event of a default may be limited to repossession or sale of such property; (e); and (f) renewals, extensions and refundings of any such indebtedness. "INTELLECTUAL PROPERTY SECURITY AGREEMENT" means the Intellectual Security Agreement, dated as of the Original Issuance Date, by and among the Company and the holders of the Debentures, pursuant to which the obligations of the Company under the Debentures are secured by the intellectual property of the Company. -5-

"INTEREST PAYMENT DATE" means each Semi-Annual Payment Date, Conversion Date or the Maturity Date, as applicable. "LIEN" means any lien (statutory or otherwise), security interest, mortgage, deed of trust, priority, pledge, charge, conditional sale, title retention agreement, financing lease or other encumbrance or similar right of others, or any agreement to give any of the foregoing. "LIQUIDATION" means for any Person, any liquidation, dissolution or winding-up of such Person, whether voluntary or involuntary, by operation or law or otherwise. "MANDATORY PREPAYMENT AMOUNT" for any Debentures shall equal the sum of: (i) the greater of (A) the principal amount of Debentures to be prepaid and any Reinstated Principal (to the extent the Holder returns the Underlying Shares subject to such Reinstated Principal), plus all accrued and unpaid interest thereon, and (B) the principal amount of Debentures to be prepaid and the Reinstated Principal (to the extent the Holder returns the Underlying Shares subject to such Reinstated Principal), plus all accrued and unpaid interest thereon, divided by the Conversion Price on the Trading Day immediately preceding (x) the date of the Event of Default or (y) the date the Mandatory Prepayment Amount is paid in full, whichever is less, multiplied by the Closing Price on (x) the date of the Event of Default or (y) the date the Mandatory Prepayment Amount is paid in full, whichever is greater, and (ii) all other amounts, costs, expenses and liquidated damages due in respect of such Debentures. "MATERIAL PROPERTY" means any interest in real property, the Collateral Targeting Agent technologies (as described in the SEC Reports) or any of the businesses, properties, contracts, agreements or operations of Avid Bioservices, Inc. (as described in the SEC Reports). "ORIGINAL ISSUE DATE" means the date of the first issuance of any Debentures regardless of the number of transfers of any particular Debenture and regardless of the number of certificates which may be issued to evidence such Debentures. "PERMITTED INDEBTEDNESS" means equipment leases that would require in the aggregate for all such leases less than $500,000 of payments over the life thereof. "PERSON" means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind. "PROCEEDING" means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial proceeding, such as a deposition), whether commenced or threatened concerning the interpretation, enforcement or defense of any transaction contemplated by any Transaction Document (whether brought against a party hereto or such parties affiliates, directors, officers, employees or agents). "PROPERTY" means any interest in any kind of property or asset, whether real, personal or mixed, and whether tangible or intangible. -6-

"PURCHASE AGREEMENT" means the Securities Purchase Agreement, dated as of August 9, 2002, to which the Company and the original Holders are parties, as amended, modified or supplemented from time to time in accordance with its terms. "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights Agreement, dated as of August 9, 2002, to which the Company and the original Holders are parties, as amended, modified or supplemented from time to time in accordance with its terms. "REGISTRATION STATEMENT" means a registration statement meeting the requirements of the Registration Rights Agreement and covering the resale of, among other things, all Underlying Shares by the Holders, who shall be named as "selling stockholders" thereunder. "REINSTATED PRINCIPAL" means the principal amount of Debentures converted during the ten Trading Days preceding the delivery of an Event of Default Notice, for which the Company issued or was obligated to issue Underlying Shares to the Holder. "RESTRICTED ACTIONS" the taking by Company or any of its subsidiaries of any of the following actions" (i) create, incur, assume or suffer to exist any Indebtedness except Permitted Indebtedness; (ii) create, incur, assume or suffer to exist any guaranty, (iii) create, incur, assume or suffer to exist any Lien, upon or with respect to any Material Property, now owned or hereafter acquired, except for Liens pursuant to the Debenture; (iii) create, incur, assume or suffer to exist any obligation as lessee for the rental or hire of any Material Property, except leases existing on the Original Issuance Date, and any extensions, supplements or renewals thereof; (iv) make any loan or advance to any Person or any purchase or other acquisition of any capital stock, assets, obligations or other securities of any Person, or any capital contribution to, investment in, or other acquisition of any interest in, any Person; (v) make any Distribution, except that any subsidiary may make Distributions to the Company; (vi) sell, lease, assign, transfer or otherwise dispose of any of its now owned or hereafter acquired Material Property (including, without limitation, shares of stock and indebtedness, receivables and leasehold interests), except in the ordinary course of business consistent with past practices; (vii) sell, lease, assign or otherwise dispose of any Property to any Affiliate; (a) merge into or consolidate with or purchase or acquire Property from any Affiliate; or (b) enter into any other transaction directly or indirectly with or for the benefit of any Affiliate (including, without limitation, guaranties and assumption of obligations of any Affiliate); provided that; any Affiliate who is an individual may serve as a director, officer or employee of the Company or any Subsidiary and receive reasonable compensation for his or her services in such capacity; -7-

(viii) merge or consolidate with, or sell, assign, lease or otherwise dispose of (whether in one transaction or in a series of related transactions) all or substantially all of its assets (whether now owned or hereafter acquired) to, any Person, or acquire all or substantially all of the assets or the business of any Person (or enter into any agreement to do any of the foregoing); (ix) enter into any agreement with respect to the foregoing provisions (i) through (viii); or (x) enter into any agreement with respect to a Sale Event. "REQUIRED HOLDERS" mean the holders of Debentures owning more than 90% of the aggregate outstanding principal amount of all the Debentures issued by the Company under the Purchase Agreement. "SALE EVENT" means the occurrence of any of the following with respect to the Company or any Subsidiary (as defined in the Purchase Agreement), including Avid Bioservices, Inc.,: (i) the sale of all or substantially all of its assets in one or a series of related transactions, (ii) an acquisition after by a Person or "group" (as described in Rule 13d-5(b)(1) promulgated under the Exchange Act) of effective control (whether through legal or beneficial ownership of capital stock, by contract or otherwise) of in excess of 33% of its voting securities, (iii) a replacement at one time or over time of more than one-half of the members of its board of directors which is not approved by a majority of those individuals who are members of the board of directors on the date hereof (or by those individuals who are serving as members of the board of directors on any date whose nomination to the board of directors was approved by a majority of the members of the board of directors who are members on the date hereof); provided that the foregoing shall not apply to any Subsidiary so long as such Subsidiary is wholly-owned by the Company, (iv) the merger or consolidation of it with or into another entity that is not wholly-owned by the Company in one or a series of related transactions, or (v) the execution by the Company of an agreement to which the Company is a party or by which it is bound, providing for any of the events set forth above in (i), (ii), (iii) or (iv) above. "SECURITIES ACT" means the Securities Act of 1933, as amended. "SECURITY AGREEMENT" means the Security Agreement, dated as of the Original Issuance Date, by and among the Company and the holders of the Debentures, pursuant to which the obligations of the Company under the Debentures are secured by the assets of the Company. "SEMI-ANNUAL PAYMENT DATE" means each of June 30 and December 31, except if such date is not a Trading Day, in which case such Semi-Annual Payment Date shall be the next succeeding Trading Day. "STRATEGIC TRANSACTION" means a transaction or relationship in which the Company issues shares of Common Stock to a Person which is, itself or through its subsidiaries, an operating company in a business synergistic with the business of the Company, whose business consists primarily of manufacturing, -8-

research, developing, or selling pharmaceutical products and in which the Company receives material benefits in addition to the investment of funds (such Person, a "STRATEGIC COMPANY"), but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital or to a Person whose primary business is investing in securities. The parties agree that the issuance by the Company of Common Stock in connection with the Company's licensing of technology to or from a Strategic Company if (i) such arrangement is approved by the board of directors of the Company, (ii) such transaction is a bona fide, arms-length transaction to a third party unaffiliated with the Company or any of its Affiliates, (iii) the Common Stock at issue may not be registered for resale until 60 Trading Days following the Effective Date (plus such number of Trading Days during such period when the Registration Statement may not be used by the Purchasers for the resale of the shares of Common Stock), (iv) such Strategic Company is not in the primary business of investing in securities, and (v) such Strategic Company purchases the Common Stock, for cash, at a price equal to or greater than average of the Closing Prices of the Common Stock for the five Trading Days immediately preceding date closing date of the issuance of the Common Stock shall be deemed a Strategic Transaction. "TRADING DAY" means (i) a day on which the Common Stock is traded on an Eligible Market, or (ii) if the Common Stock is not listed on an Eligible Market, a day on which the Common Stock is traded in the over the counter market, as reported by the OTC Bulletin Board, or (iii) if the Common Stock is not quoted on the OTC Bulletin Board, a day on which the Common Stock is quoted in the over the counter market as reported by the National Quotation Bureau Incorporated (or any similar organization or agency succeeding its functions of reporting prices); provided, that in the event that the Common Stock is not listed or quoted as set forth in (i), (ii) and (iii) hereof, then Trading Day shall mean a Business Day. "TRANSACTION DOCUMENTS" shall have the meaning set forth in the Purchase Agreement. "UNDERLYING SHARES" means, collectively, the Common Stock issuable upon conversion of Debentures in accordance with the terms hereof. "VWAP" means, with respect to any date of determination, the daily volume weighted average price (as reported by Bloomberg using the VAP function) of the Common Stock on such date of determination, or if there is no such price on such date of determination, then the daily volume weighted average price on the date nearest preceding such date. "WARRANTS" shall have the meaning set forth in the Purchase Agreement. "ZLP PURCHASE AGREEMENT" means the Securities Purchase Agreement, dated as of August 9, 2002, between the Company and ZLP Master Fund, Ltd. ("ZLP"), as amended, modified or supplemented from time to time in accordance with its terms, pursuant to which ZLP will purchase from the Company shares of Common Stock and common stock purchase warrants similar to the Warrants and the Adjustment Warrants, and have the right to required the Company to register the Common Stock so purchased and shares of common stock issuable upon exercise of all common stock purchase warrants pursuant to a registration rights agreement similar to the Registration Rights Agreement. -9-

2. INTEREST. (a) The Company shall pay interest to the Holder on the aggregate unconverted and then outstanding principal amount of this Debenture (including any interest added to such principal in accordance with this Section 2) at the rate of 6% per annum, payable in arrears on each Interest Payment Date. Interest shall be calculated on the basis of a 360-day year and shall accrue daily commencing on the Original Issue Date (regardless of the number of transfers of the Debenture). (b) Subject to the conditions and limitations set forth below, the Company shall pay interest under this Debenture in cash (c) If the Company fails for any reason to pay interest in cash by the Delivery Date, any Holder may (but shall not be required to) treat such interest as if it had been added to the principal amount of this Debenture as of such Delivery Date. (d) Any interest to be paid in cash hereunder that are not paid by the Delivery Date and not added to the principal amount of the Debenture shall continue to accrue and shall entail a late fee, which must be paid in cash, at the rate of 15% per annum or the lesser rate permitted by applicable law (such fees to accrue daily, from the date such dividend is due hereunder through and including the date of payment). 3. REGISTRATION OF DEBENTURES. The Company shall register the Debentures upon records to be maintained by the Company for that purpose (the "DEBENTURE REGISTER") in the name of each record holder thereof from time to time. The Company may deem and treat the registered Holder of this Debenture as the absolute owner hereof for the purpose of any conversion hereof or any payment of interest hereon, and for all other purposes, absent actual notice to the contrary. 4. REGISTRATION OF TRANSFERS AND EXCHANGES. The Company shall register the transfer of any portion of this Debenture in the Debenture Register upon surrender of this Debenture to the Company at its address for notice set forth herein. Upon any such registration or transfer, a new debenture, in substantially the form of this Debenture (any such new debenture, a "NEW DEBENTURE"), evidencing the portion of this Debenture so transferred shall be issued to the transferee and a New Debenture evidencing the remaining portion of this Debenture not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Debenture by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a holder of a Debenture. This Debenture is exchangeable for an equal aggregate principal amount of Debentures of different authorized denominations, as requested by the Holder surrendering the same. No service charge or other fee will be imposed in connection with any such registration of transfer or exchange. Transfers of this Debenture and the Underlying Shares are governed by Section 4.1 of the Purchase Agreement. -10-

5. CONVERSION. (a) (i) AT THE OPTION OF THE HOLDER. All or any portion of the principal amount of this Debenture then outstanding shall be convertible into Common Stock (subject to the limitations set forth in Section 5(b)), at the option of the Holder, at any time and from time to time from and after the Original Issue Date. Holders shall effect conversions under this Section 5(a)(i) by delivering the Company with a written notice in the form attached hereto as EXHIBIT A (a "CONVERSION NOTICE") together with a schedule in the form of SCHEDULE 1 attached hereto (the "CONVERSION SCHEDULE"). The number of Underlying Shares issuable upon any conversion hereunder shall (subject to the limitations of Section 5(b)) equal the outstanding principal amount of this Debenture to be converted divided by the Conversion Price. (ii) AUTOMATIC CONVERSION. Subject to this Section 5(a)(ii), if after the Effective Date, the VWAP for 20 consecutive Trading Days (such 20 consecutive Trading Day period is hereinafter referred to as the "DETERMINATION PERIOD") equals or exceeds $2.50 (as adjusted for stock splits, stock dividends, stock combinations and other similar transactions) (the "THRESHOLD PRICE") then the outstanding principal amount of the Debentures (and any accrued and unpaid interest thereunder), subject to the limitations set forth herein and in Section 5(b), shall be automatically, without any action on the part of the Company or the Holder, converted, at the Conversion Ratio, into shares of Common Stock. Such Underlying Shares issuable pursuant to this Section 5(a)(ii) shall be delivered to the Holders within three Trading Days following the first date in accordance with Section 5(c) that the Threshold Price is met for 20 consecutive Trading Days. The Debenture shall only be converted pursuant to this Section 5(a)(ii) if, during the period from the beginning of the Determination Period used to determine whether the Threshold Price has been met through and including the third Trading Day following such Determination Period, the following shall be true: (i) the VWAP shall have equaled or exceeded the Threshold Price, (ii) the Company shall have honored all conversion notices from the Holders, (iii) the Equity Conditions have been satisfied with respect to any and all of the Underlying Shares then issuable upon conversion in full of all outstanding principal amount of the Debenture at all times, and not breached as a result of the conversions under this Debenture. If any of the foregoing conditions shall cease to be satisfied at any time during the required period, or if the Company shall fail to deliver the Underlying Shares to the Holders within three Trading Days following the Determination Period, then the outstanding principal amount of the Debentures shall not be automatically converted pursuant to this Section 5(a)(ii), until all of the conditions set forth herein have been satisfied. (b) CERTAIN CONVERSION RESTRICTIONS. (i) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by a Holder upon any conversion of Debentures (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such conversion (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its affiliates and any other Persons whose beneficial ownership of shares of Common Stock would be aggregated with such Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 4.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such conversion). For such -11-

purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of a Conversion Notice hereunder will constitute a representation by the applicable Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Underlying Shares issuable in respect of such Conversion Notice does not violate the restriction contained in this paragraph. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger, sale or other business combination or reclassification involving the Company as contemplated herein. (ii) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by a Holder upon any conversion of Debentures (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such conversion (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its affiliates and any other Persons whose beneficial ownership of shares of Common Stock would be aggregated with such Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 9.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such conversion). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of a Conversion Notice hereunder will constitute a representation by the applicable Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Underlying Shares issuable in respect of such Conversion Notice does not violate the restriction contained in this paragraph. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger, sale or other business combination or reclassification involving the Company as contemplated herein. (iii) If the Company has not previously obtained Shareholder Approval (as defined below), then the Company may not issue in excess of the Issuable Maximum upon conversions of the Debentures. The "ISSUABLE MAXIMUM" means a number of shares equal to 22,054,931, less: (i) shares of Common Stock issued pursuant to the Purchase Agreement, (ii) shares of Common Stock previously issued upon exercise of the Warrants, (iii) Underlying Shares previously issued upon conversion of Debentures and payment of interest thereon in Dividend Shares, (iv) any issuance of shares of Common Stock to an Approved Purchaser (as defined in the Purchase Agreement) subsequent to the Original Issue Date pursuant to the Company's Registration Statement No. 333-71086, and (v) shares of Common Stock issued pursuant to the ZLP Purchase Agreement (and the transactions contemplated thereby). Each Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained by dividing: (x) the principal amount of Debentures issued and sold to such Holder on the Original Issue Date by (y) the aggregate principal amount Debentures issued and sold by the Company on the Original Issue Date. If any Holder shall no longer holds Debentures, then such Holder's remaining portion of the Issuable Maximum shall be allocated pro-rata among the remaining Holders. If on any Conversion Date: (A) the aggregate number of shares of Common Stock that would then be issuable upon conversion in full of all then outstanding principal amount of Debentures would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the vote of shareholders, as may be required by the applicable rules and regulations of the Nasdaq Stock Market (or any successor entity) applicable to approve the issuance of shares of Common Stock in excess -12-

of the Issuable Maximum pursuant to the terms hereof (the "SHAREHOLDER APPROVAL"), then, the Company shall issue to the converting Holder a number of shares of Common Stock equal to such Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum and, with respect to the remainder of the principal amount of Debentures then held by such Holder for which a conversion would result in an issuance of shares of Common Stock in excess of such Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum (the "EXCESS PRINCIPAL AMOUNT "), the applicable Holder shall have the right to require the Company to either: (1) obtain the Shareholder Approval applicable to such issuance as soon as is possible, but in any event not later than the 90th day after such request, or (2) pay cash, in an amount equal to the Excess Principal Amount (and accrued and unpaid dividends thereon). If a Holder shall have elected the first option pursuant to the immediately preceding sentence and the Company shall have failed to obtain the Shareholder Approval on or prior to the 90th day after such request, then within three (3) days of such 90th day, the Company shall pay cash to such Holder an amount equal to Excess Principal Amount (and accrued and unpaid dividends thereon). If the Company fails to pay the Excess Principal Value in full pursuant to this Section within seven days after the date payable, the Company will pay interest thereon at a rate of 15% per annum or such lesser maximum amount that is permitted to be paid by applicable law, to such Holder, accruing daily from the Conversion Date until such amount, plus all such interest thereon, is paid in full. Notwithstanding anything herein to the contrary, if on any date other than a Conversion Date: (A) the aggregate number of shares of Common Stock that would then be issuable upon conversion in full of all then outstanding Debentures would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the Shareholder Approval, then, the Holder shall be entitled to require the Company to pay to it in cash an amount equal to the outstanding principal amount of the Debentures (plus all accrued and unpaid dividends thereon) then held by such Holder for which a potential conversion on such date would result in an issuance of shares of Common Stock in excess of such Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum. The outstanding principal amount of the Debentures shall be reduced by the Excess Principal Amount upon the Holder's receipt of the Excess Principal Amount pursuant to the terms hereof. The Company and the Holder understand and agree that shares of Common Stock issued to and then held by the Holder as a result of conversions of Debentures shall not be entitled to cast votes on any resolution to obtain Shareholder Approval pursuant hereto. (iv) Notwithstanding anything herein to the contrary, the Company may not issue, agree to issue, or enter into any arrangement pursuant to which it may issue at any time, shares of Common Stock or Common Stock Equivalents that would entitle any holder thereof to receive at any time shares of Common Stock at, in any such case, a price that is less than the Conversion Price, unless prior to the earlier to occur of the entering into of such agreement or such issuance, the Company obtains the approval of its shareholders pursuant to the rules and regulations of the Nasdaq Stock Market, Inc. ("NASDAQ") (including, without limitation, NASD Rules 4350(i), NASD IM-4300, NASD IM-4310-2, and Rule 4350(i)): for (i) the transactions contemplated by the Transaction Documents and the ZLP Purchase Agreement, including, without limitation, the sale, issuance and potential issuance of the securities issued and issuable thereunder, including the securities issued pursuant to the Purchase Agreement as well as the shares of Common Stock issuable in accordance with the Debentures, the Warrants and Adjustment Warrants, (ii) the issuance under the Transaction Documents and the ZLP Purchase Agreement (and transactions -13-

contemplated thereby) of in excess of 19.99% of the shares of Common Stock outstanding prior to the Original Issuance Date at a price that is less than the greater of book or market value of the Common Stock, and/or (iii) the potential issuance of securities of the Company having sufficient voting power to result in a change of control of the Company as described under the rules of Nasdaq. The Company understands and agrees that the shares of Common Stock that have been issued or that may be issued to and then held by any Holder or any of such Holder's Affiliates may not cast votes on such matters. In the event that the Company enters into or seeks to enter into a transaction described in this Section 5(b)(iii), then the Company shall deposit into an escrow account with an escrow agent (which account and agent shall be reasonably satisfactory to the Holders) an amount equal to the aggregate outstanding principal amount of Debentures plus all accrued and unpaid interest thereon plus all liquidated damages and other amounts payable thereon, which amount shall be paid to the Holders in the event that the Company fails to obtain the approval of its stockholders with respect to such transaction. (c) MECHANICS OF CONVERSION. By the third Trading Day after each Conversion Date, the Company shall issue or cause to be issued and cause to be delivered to or upon the written order of the Holder and in such name or names as the Holder may designate a certificate for the Underlying Shares issuable upon such conversion which, unless required by the Purchase Agreement, shall be free of all restrictive legends. The Holder, or any Person so designated by the Holder to receive Underlying Shares, shall be deemed to have become the holder of record of such Underlying Shares as of the Conversion Date. If the Company's transfer agent is eligible to participate in the Depositary Trust Corporation DWAC system and no legends are required to be included on the certificates representing Underlying Shares pursuant to the Purchase Agreement, the Company shall, upon request of the Holder, use its best efforts to deliver Underlying Shares hereunder electronically through the Depository Trust Corporation or another established clearing corporation performing similar functions. (d) To effect conversions hereunder, the Holder shall not be required to physically surrender this Debenture unless the aggregate principal amount represented by such Debenture is being converted, in which event, the Holder shall deliver such Debenture promptly to the Company (it being understood that such delivery is not a condition precedent to the Company's obligations to deliver Underlying Shares upon such conversion). Conversions hereunder shall have the effect of lowering the outstanding principal amount represented by such Debenture in an amount equal to the applicable conversion, which shall be evidenced by entries set forth in the Conversion Schedule attached as SCHEDULE I, which will be maintained by the Company and the Holder. (e) The Company's obligations to issue and deliver Underlying Shares upon conversion of this Debenture in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such obligation of the Company to the Holder in connection with the issuance of such Underlying Shares. -14-

(f) If by the third Trading Day after a Conversion Date the Company fails to deliver to the Holder such Underlying Shares in such amounts and in the manner required pursuant to Section 5(a), then the Holder will have the right to rescind such conversion. (g) If by the third Trading Day after a Conversion Date the Company fails to deliver to the Holder such Underlying Shares in such amounts and in the manner required pursuant to Section 5(c), and if after such third Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by such Holder of the Underlying Shares which the Holder anticipated receiving upon such conversion (a "BUY-IN"), then the Company shall: (A) pay in cash to the Holder (in addition to any remedies available to or elected by the Holder) the amount by which (x) the Holder's total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (1) the aggregate number of Underlying Shares that the Company was required to deliver to the Holder in connection with the conversion at issue by (2) the Closing Price at the time of the obligation giving rise to such purchase obligation and (B) at the option of the Holder, either reinstate the principal amount of Debentures and equivalent number of Underlying Shares for which such conversion was not timely honored or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its conversion and delivery obligations hereunder. For example, if the Holder purchases shares of Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted conversion of Debentures with a market price on the date of conversion totaling $10,000, under clause (A) of the immediately preceding sentence, the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In. (h) ADJUSTMENTS TO CONVERSION PRICE. The Conversion Price in effect on any Conversion Date shall be subject to adjustments in accordance with this Section 5(h): (i) STOCK DIVIDENDS AND SPLITS. If the Company, at any time while any Debentures are outstanding, (i) pays a stock dividend on its shares of Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into a larger number of shares, or (iii) combines outstanding shares of Common Stock into a smaller number of shares, then in each such case the Conversion Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock outstanding immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately after such event. Any adjustment made pursuant to clause (i) of this paragraph shall become effective immediately after the record date for the determination of stockholders entitled to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall become effective immediately after the effective date of such subdivision or combination. (ii) ADDITIONAL DISTRIBUTIONS. If the Company, at any time while any Debentures are outstanding, shall distribute to all holders of shares of Common Stock (and not to Holders) evidences of its indebtedness or assets or rights or warrants to subscribe for or purchase any security, then in each such case the Conversion Price at which the principal amount of Debentures shall thereafter be convertible shall be determined by multiplying the Conversion -15-

Price in effect immediately prior to the record date fixed for determination of stockholders entitled to receive such distribution by a fraction of which the denominator shall be the Closing Price determined as of the record date mentioned above, and of which the numerator shall be such Closing Price on such record date less the then fair market value at such record date of the portion of such assets or evidence of indebtedness so distributed applicable to one outstanding Common Share as determined by the Board of Directors in good faith. In either case the adjustments shall be described in a statement provided to the Holders of the portion of assets or evidences of indebtedness so distributed or such subscription rights applicable to one share of Common Stock. Such adjustment shall be made whenever any such distribution is made and shall become effective immediately after the record date mentioned above. (iii) SUBSEQUENT EQUITY SALES. If the Company or any subsidiary thereof, at any time while Debentures are outstanding and during the period between the Original Issue Date and the 18th month anniversary of the Effective Date (provided that such period shall be extended by the number of days in which the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the selling stockholders thereunder for the resale of the shares of Common Stock registered thereunder), shall issue shares of Common Stock or Common Stock Equivalents entitling any Person to acquire shares of Common Stock, at a price per share less than the Conversion Price (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Conversion Price, such issuance shall be deemed to have occurred for less than the Conversion Price), then, at the option of the Holder for such exercises as it shall indicate, the Conversion Price shall be adjusted to equal the conversion, exchange or purchase price for such Common Stock or Common Stock Equivalents (including any reset provisions thereof) at issue. Such adjustment shall be made whenever such Common Stock or Common Stock Equivalents are issued, and which adjusted Conversion Price shall continue for as long as the Debentures remain outstanding. The Company shall notify the Holder in writing, no later than the Trading Day following the issuance of any Common Stock or Common Stock Equivalent subject to this section, indicating therein the applicable issuance price, or of applicable reset price, exchange price, conversion price and other pricing terms. (A) If, at any time while any Debentures are outstanding, the Company or any subsidiary issues Common Stock Equivalents at a price per share that floats or resets or otherwise varies or is subject to adjustment based on market prices of the Common Stock (a "FLOATING PRICE SECURITY"), then for purposes of applying the preceding paragraph in connection with any subsequent exercise, the Conversion Price will be determined separately on each Conversion Date and will be deemed to equal the lowest price per share at which any holder of such Floating Price Security is entitled to acquire shares of Common Stock on such Conversion Date (regardless of whether any such Holder actually acquires any shares on such date). (B) Notwithstanding the foregoing, no adjustment will be made under this Section 5(h)(iii) as a result of: (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or -16-

consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the Original Issue Date hereof and as specified in SCHEDULE 3.1(G) (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction or (iv) the issuance of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to any Approved Purchaser (as defined in the Purchase Agreement) pursuant to Registration Statement No. 333-71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or the ZLP Purchase Agreement (or the transactions contemplated thereby). (iv) CALCULATIONS. All calculations under this Section 5 shall be made to the nearest cent or the nearest 1/100th of a share, as the case may be. The number of shares of Common Stock outstanding at any given time shall not include shares owned or held by or for the account of the Company, and the disposition of any such shares shall be considered an issue or sale of Common Stock. (v) NOTICE OF ADJUSTMENTS. Whenever the Conversion Price is adjusted pursuant to the terms hereof the Company shall promptly mail to each Holder, a notice setting forth the Conversion Price after such adjustment and setting forth a brief statement of the facts requiring such adjustment. (i) CERTAIN FUNDAMENTAL TRANSACTIONS. In case of any Fundamental Transaction, a Holder shall have the right to do any of the following: (1) convert its Debentures into the shares of stock and other securities, cash and property receivable upon or deemed to be held by holders of shares of Common Stock following such Fundamental Transaction and such Holder shall be entitled upon such Fundamental Transaction to receive such amount of securities, cash and property as the shares of Common Stock into which such Debentures could have been converted immediately prior to such Fundamental Transaction would have been entitled, or (2)(x) require the surviving entity to issue debentures in such principal amount equal to the principal amount of the Debentures held by such Holder prior to such Fundamental Transaction, plus all other amounts owing thereon, which newly issued debentures shall have identical terms to the terms of the Debentures and shall be entitled to all of the rights and privileges of a Holder set forth herein and the agreements pursuant to which the prepayment was issued, and (y) simultaneously with the issuance of such convertible debentures shall have the right to convert such shares only into shares of stock and other securities, cash and property receivable upon or deemed to be held by holders of shares of Common Stock following such Fundamental Transaction (the conversion price applicable for the newly issued convertible debentures shall be based upon the amount of securities, cash and property that each Common Share would receive in such Fundamental Transaction and the Conversion Price stated herein) or (3) at the Holder's option and request, any successor to the Company or surviving entity in such Fundamental Transaction shall either pay to the Holder the greater of (A) the outstanding principal amount of the Debentures held by such Holder plus all accrued and unpaid interest thereon, and (B) the principal amount of the Debenture held by such Holder, plus all accrued and unpaid interest thereon, divided by the Conversion Price on the Trading Day immediately preceding (x) the date of prior -17-

to such Fundamental Transaction or (y) the date the amount set forth in this section is paid in full, whichever is less, multiplied by the Closing Price on (x) the date of the Fundamental Transaction or (y) the date the amount set forth in this section is paid in full, whichever is greater. Any Fundamental Transaction shall include such terms so as continue to give the Holders the right to receive the securities, cash and property set forth in this Section upon any conversion or redemption following such event. This provision shall similarly apply to successive such Fundamental Transactions. The rights set forth herein shall not alter the rights of a Holder set forth in Section 6, provided, that, a Holder may only exercise the rights set forth herein or the rights set forth in Section 6 with respect to a single event giving rise to such rights. (j) RECLASSIFICATIONS; SHARE EXCHANGES. In case of any reclassification of the shares of Common Stock, or any compulsory share exchange pursuant to which the shares of Common Stock are converted into other securities, cash or property (other than compulsory share exchanges which constitute a Sale Event), the Holders of the Debentures then outstanding shall have the right thereafter to convert such shares only into the shares of stock and other securities, cash and property receivable upon or deemed to be held by holders of shares of Common Stock following such reclassification or share exchange, and the Holders shall be entitled upon such event to receive such amount of securities, cash or property as a holder of the number of shares of Common Stock of the Company into which such shares of Debentures could have been converted immediately prior to such reclassification or share exchange would have been entitled. This provision shall similarly apply to successive reclassifications or share exchanges. (k) NOTICE OF CORPORATE EVENTS. If: (a) the Company shall declare a dividend (or any other distribution) on the Common Stock, (b) the Company shall declare a special nonrecurring cash dividend on or a redemption of the Common Stock, (c) the Company shall authorize the granting to all holders of Common Stock rights or warrants to subscribe for or purchase any shares of capital stock of any class or of any rights, (d) the approval of any stockholders of the Company shall be required in connection with any Sale Event or Fundamental Transaction, or (e) the Company shall authorize the voluntary or involuntary dissolution, liquidation or winding up of the affairs of the Company; then the Company shall file a press release or Current Report on Form 8-K to disclose such occurrence and notify the Holders at their last addresses as they shall appear upon the stock books of the Company, at least 20 calendar days prior to the applicable record or effective date hereinafter specified, a notice stating (x) the date on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants, or if a record is not to be taken, the date as of which the holders of Common Stock of record to be entitled to such dividend, distributions, redemption, rights or warrants are to be determined or (y) the date on which any such Sale Event or Fundamental Transaction is expected to become effective or close, and the date as of which it is expected that holders of Common Stock of record shall be entitled to exchange their Common Stock for securities, cash or other property deliverable upon any such Sale Event or Fundamental Transaction. Holders are entitled to convert the outstanding principal amount of the Debentures during the 20-day period commencing the date of such notice to the effective date of the event triggering such notice. (l) RESERVATION OF COMMON STOCK. The Company covenants that it will at all times reserve and keep available out of its authorized and unissued shares of Common Stock solely for the purpose of issuance upon conversion of Debentures, each as herein provided, free from preemptive rights or any other -18-

actual contingent purchase rights of persons other than the Holders, not less than such number of shares of Common Stock as shall be issuable upon the conversion of all outstanding principal amount of Debentures. The Company covenants that all shares of Common Stock that shall be so issuable shall, upon issue, be duly and validly authorized and issued and fully paid and nonassessable. (m) FRACTIONAL SHARES. Upon a conversion hereunder the Company shall not be required to issue stock certificates representing fractions of shares of Common Stock, but may if otherwise permitted, make a cash payment in respect of any final fraction of a share based on the Closing Price on the applicable Conversion Date. If any fraction of an Underlying Share would, except for the provisions of this Section, be issuable upon a conversion hereunder, the Company shall pay an amount in cash equal to the Conversion Price multiplied by such fraction. (n) STAMP TAXES. The issuance of certificates for Common Stock on conversion of principal amount of this Debenture shall be made without charge to the Holders thereof for any documentary stamp or similar taxes that may be payable in respect of the issue or delivery of such certificate, provided that the Company shall not be required to pay any tax that may be payable in respect of any transfer involved in the issuance and delivery of any such certificate upon conversion in a name other than that of the Holder of such Debentures so converted. (o) NOTICES. Any and all notices or other communications or deliveries to be provided by the Holders, including, without limitation, any Holder Conversion Notice, shall be in writing and delivered personally, by facsimile or sent by a nationally recognized overnight courier service, addressed to the attention of the Chief Financial Officer of the Company addressed to Peregrine Pharmaceuticals, Inc., 14272 Franklin Avenue, Tustin, California 92780, Facsimile No.: (714) 838-5817, attention Chief Financial Officer, or to such other address or facsimile number as shall be specified in writing by the Company for such purpose. Any and all notices or other communications or deliveries to be provided by the Company hereunder shall be in writing and delivered personally, by facsimile or sent by a nationally recognized overnight courier service, addressed to each Holder at the facsimile telephone number or address of such Holder appearing on the books of the Company, or if no such facsimile telephone number or address appears, at the principal place of business of the Holder. Any notice or other communication or deliveries hereunder shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Section prior to 6:30 p.m. (New York City time) (with confirmation of transmission), (ii) the date after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Section later than 6:30 p.m. (New York City time) on any date and earlier than 11:59 p.m. (New York City time) on such date (with confirmation of transmission), (iii) upon receipt, if sent by a nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. 6. RESTRICTED ACTIONS. Neither the Company nor any subsidiary shall taken any Restricted Action without the prior written consent of the Required Holders. -19-

7. PREPAYMENTS. (a) UPON EVENT OF DEFAULT. Upon the occurrence of an Event of Default, each Holder shall (in addition to all other rights it may have hereunder or under applicable law), have the right, exercisable at the sole option of such Holder, and by delivery of a written notice to the Company to require the Company (an "EVENT OF DEFAULT NOTICE") to prepay all or a portion of the Debentures then held by such Holder and, at the option of the Holder, all or a portion of the Reinstated Principal, for an amount, in cash, equal to the Mandatory Prepayment Amount. The Mandatory Prepayment Amount shall be due and payable within five Trading Days of the date of the Event of Default Notice. For purposes of this Section, principal amount of Debentures shall remain outstanding until such date as the Holder shall have received Underlying Shares upon a conversion (or attempted conversion) thereof that meets the requirements hereof. Notwithstanding anything herein to the contrary, upon the occurrence of a Bankruptcy Event, all outstanding principal and accrued but unpaid interest on this Debenture shall immediately become due and payable in full in cash, without any further action by the Holder, and the Company shall immediately be obligated to pay the Mandatory Prepayment Amount pursuant to this paragraph as if the Holder had delivered a Event of Default Notice immediately prior to the occurrence of any such Event of Default. The Holder need not provide and the Company hereby waives any presentment, demand, protest or other notice of any kind, and the Holder may immediately and without expiration of any grace period enforce any and all of its rights and remedies hereunder and all other remedies available to it under applicable law. Such declaration may be rescinded and annulled by Holder at any time prior to payment hereunder. No such rescission or annulment shall affect any subsequent Event of Default or impair any right consequent thereon. (b) UPON SALE EVENT. The Company shall notify the Holders on the day that the Company enters into a transaction giving rise to a Sale Event (such notice, a "COMPANY REDEMPTION NOTICE" and the date such Company Redemption Notice is received by a Holder, a "COMPANY REDEMPTION DATE"). The Company Redemption Notice shall describe the Sale Event and state the consideration being paid in such Sale Event and the date of consummation of the Sale Event. In addition, on the day that the Company delivers to the Holders a Company Redemption Notice, the Company shall also issue a press release and file a Current Report on Form 8-K, in each case disclosing all material terms of the Sale Event. Concurrent with the closing of the Sale Event (and as a condition precedent to such closing), the Company shall, redeem, in cash, all outstanding principal amount of the Debentures which have not previously been redeemed or for which Conversion Notices shall not have been delivered, at a price equal to the Company Redemption Price. Notwithstanding the foregoing, a Holder may convert (and the Company shall honor such conversions in accordance with the terms hereof) any or all of the outstanding principal amounts of Debentures subject to a Company Redemption Notice delivered for conversion on or prior to the Sale Event. Concurrent with the closing of the Sale Event, the Company shall cause the escrow agent holding the Company Redemption Price to pay to the Holders the Company Redemption Price, which amount shall be due and payable in cash, and such payment of the Company Redemption Amount shall be a condition precedent to the closing of the Sale Event. (c) AT COMPANY'S OPTION. If after the Effective Date, the Closing Price for ten consecutive Trading Days is less than $1.00 per share (as -20-

adjusted for stock splits, stock dividends, stock combinations and other similar transactions) (the "MINIMUM PRICE"), then the Company may deliver a notice to the Holders (an "OPTIONAL REPAYMENT NOTICE" and the date such notice is received by the Holders, the "OPTIONAL REPAYMENT NOTICE DATE") of its irrevocable election to repay all, but not less than all, of the then aggregate amount of outstanding Debentures, for an amount, in cash, equal to the Company Redemption Price. The Company Redemption Amount payable pursuant to this Section 7(c) is due in full on the tenth Trading Day following the Optional Repayment Notice Date. The Company may only deliver an Optional Repayment Notice if from the first of the ten Trading Days utilized to determine whether the Minimum Price has been so met through and including the tenth Trading Day following the Optional Repayment Notice Date each of the following shall be true: (i) the Closing Price shall be less than the Minimum Price, (ii) the Company shall have duly honored all conversions and redemptions scheduled to occur or occurring by virtue of one or more Conversion Notices prior to the Optional Repayment Due Date, (iii) the Equity Conditions shall have been satisfied at all times. If any of the foregoing conditions shall cease to be satisfied at any time during the required period, or if the Company shall fail to pay the Optional Repayment Amount in full by the Optional Repayment Due Date, then the Optional Repayment Notice shall be null and void, ab initio, and the Company may not deliver any subsequent Optional Repayment Notices. The Holder may convert any portion of this Debenture prior to the Optional Repayment Due Date. The Company covenants and agrees that it will honor all Conversion Notices tendered from the time of delivery of the Optional Repayment Notice through the Optional Repayment Due Date. 8. RANKING. This Debenture ranks pari passu to all other Debentures now or hereafter issued pursuant to the Transaction Documents. No Indebtedness of the Company is senior to this Debenture in right of payment, whether with respect of interest, damages or upon Liquidation or dissolution or otherwise. 9. SECURED OBLIGATION. The payment obligations under this Debenture are secured pursuant to the Security Agreement and Intellectual Property Security Agreement. Such agreements will terminate upon the earlier to occur of the following: (i) with respect to the Holder upon the date on which all payments hereunder have been made in full or the Debenture has otherwise been converted pursuant to the terms hereof and (ii) the 21st day following (but not including) the date that the Closing Price exceeds $1.25 per share (as adjusted for stock splits, stock dividends, stock combinations and other similar transactions) for 20 consecutive Trading Days and the Equity Conditions shall have been satisfied at all times during such 20 consecutive Trading Days. 10. MISCELLANEOUS. (a) This Debenture shall be binding on and inure to the benefit of the parties hereto and their respective successors and assigns. This Debenture may be amended only in writing signed by the Company and the Holder and their successors and assigns. -21-

(b) Subject to Section 9(a), above, nothing in this Debenture shall be construed to give to any person or corporation other than the Company and the Holder any legal or equitable right, remedy or cause under this Debenture. This Debenture shall inure to the sole and exclusive benefit of the Company and the Holder. (c) All questions concerning the construction, validity, enforcement and interpretation of this Debenture shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all Proceedings shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough of Manhattan (the "NEW YORK COURTS"). Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the New York Courts for any proceeding, and hereby irrevocably waives, and agrees not to assert in any Proceeding, any claim that it is not personally subject to the jurisdiction of any New York Court or that a New York Court is an inconvenient forum for such Proceeding. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Debenture and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal Proceeding. If either party shall commence a Proceeding, then the prevailing party in such Proceeding shall be reimbursed by the other party for its attorney's fees and other costs and expenses incurred with the investigation, preparation and prosecution of such Proceeding. (d) The headings herein are for convenience only, do not constitute a part of this Debenture and shall not be deemed to limit or affect any of the provisions hereof. (e) In case any one or more of the provisions of this Debenture shall be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Debenture shall not in any way be affected or impaired thereby and the parties will attempt in good faith to agree upon a valid and enforceable provision which shall be a commercially reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Debenture. (f) No provision of this Debenture may be waived or amended except in a written instrument signed, in the case of an amendment, by the Company and the Holder or, or, in the case of a waiver, by the Holder. No waiver of any default with respect to any provision, condition or requirement of this Debenture shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in any manner impair the exercise of any such right. (g) Any cash amounts due from the Company under this Debenture, including, interest, liquidated damages and redemption amounts, which is not paid on the date such payment is due to be paid shall continue to accrue and shall entail a late fee, which must be paid in cash, at the rate of 15% per annum or the lesser rate permitted by applicable law (such fees to accrue daily, from the date such amount is due hereunder through and including the date of payment in full of such amount). -22-

(h) If it shall be found that any interest due hereunder shall violate applicable laws governing usury, the applicable rate of interest due hereunder shall be reduced to the maximum permitted rate of interest under such law. (i) Except pursuant to the terms of this Debenture, the outstanding principal amount and interest under this Debenture may not be prepaid by the Company without the prior written consent of the Holder. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGE FOLLOWS] -23-

IN WITNESS WHEREOF, the Company has caused this Debenture to be duly executed by a duly authorized officer as of the date first above indicated. PEREGRINE PHARMACEUTICALS, INC. By: -------------------------------- Name: Paul Lytle Title: V.P. Finance & Accounting -24-

EXHIBIT A CONVERSION NOTICE (To be Executed by the Registered Holder in order to convert Debentures) The undersigned hereby elects to convert the principal amount of Debenture indicated below, into shares of Common Stock of Peregrine Pharmaceuticals, Inc. as of the date written below. If shares are to be issued in the name of a Person other than undersigned, the undersigned will pay all transfer taxes payable with respect thereto and is delivering herewith such certificates and opinions as reasonably requested by the Company in accordance therewith. No fee will be charged to the Holder for any conversion, except for such transfer taxes, if any. All terms used in this notice shall have the meanings set forth in the Debenture. Conversion calculations: _____________________________________________ Date to Effect Conversion _____________________________________________ Principal amount of Debenture owned prior to conversion _____________________________________________ Principal amount of Debenture to be Converted _____________________________________________ Principal amount of Debenture remaining after Conversion _____________________________________________ Number of shares of Common Stock to be Issued Conversion Price_____________________________ Signature____________________________________ Name_________________________________________ Address______________________________________ By the delivery of this Conversion Notice, the Holder represents and warrants to the Company that its ownership of the shares of Common Stock does not exceed the restrictions set forth in Sections 5(b) of the Debenture.

SCHEDULE 1 CONVERSION SCHEDULE 6% Convertible Debentures, due August 8, 2005, in the aggregate principal amount of $_______ issued by Peregrine Pharmaceuticals, Inc. This Conversion Schedule reflects conversions made under the above referenced Debentures. - -------------- -------------- -------------- -------------- -------------- Date of Amount of Aggregate Applicable Mandatory Conversion Conversion Principal Conversion Prepayment Amount Price Amount Remaining Subsequent to Conversion - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- -------------- - -------------- -------------- -------------- -------------- --------------

EXHIBIT 10.79 FORM OF REGISTRATION RIGHTS AGREEMENT UNDER SECURITIES PURCHASE AGREEMENT REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this "AGREEMENT") is made and entered into as of August 9, 2002, by and among Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), and the investors signatory hereto (each a "PURCHASER" and collectively, the "PURCHASERS"). This Agreement is made pursuant to the Securities Purchase Agreement, dated as of the date hereof among the Company and the Purchasers (the "PURCHASE AGREEMENT"). The Company and the Purchasers hereby agree as follows: 1. DEFINITIONS. Capitalized terms used and not otherwise defined herein that are defined in the Purchase Agreement shall have the meanings given such terms in the Purchase Agreement. As used in this Agreement, the following terms shall have the following meanings: "COMMON SHARES" means the shares of Common Stock issued or issuable to the Purchasers pursuant to the Purchase Agreement. "COMMON STOCK" means the Common Stock, $.001 par value per share, of the Company. "COMMON STOCK WARRANTS" mean the Common Stock Warrants issued to the Purchasers pursuant to the Purchase Agreement. "DEBENTURES" means the 6% Secured Convertible Debentures, in the aggregate principal amount of $[ ], issued to the Purchasers pursuant to the Purchase Agreement. "DEBENTURE WARRANTS" mean the Debenture Warrants issued to the Purchasers pursuant to the Purchase Agreement. "EFFECTIVE DATE" means the date on which a Registration Statement is declared effective by the Commission. "EFFECTIVENESS DATE" means, (a) with respect to the initial Registration Statement required to be filed hereunder, the earlier of (i) the 90th day following the Closing Date and (ii) the third Trading Day following the date on which the Company is notified by the Commission that such Registration Statement will not be reviewed or is no longer subject to further review and comments, and (b) with respect to any additional Registration Statements that may be required pursuant to SECTION 2(C) or SECTION 2(D) the earlier of (i) the 90th day following the date on which the Company first knows, or reasonably should have known, that such additional Registration Statement is required under such Section and (ii) the third Trading Day following the date on which the Company is notified by the Commission that such Registration Statement will not be reviewed or is no longer subject to further review and comments. "EFFECTIVENESS PERIOD" shall have the meaning set forth in Section 2(a).

"FILING DATE" means: (a) with respect to the initial Registration Statement required to be filed hereunder, the 30th day following the Closing Date, and (b) with respect to any additional Registration Statements that may be required pursuant to Section 2(c), the 30th day following the date on which the Company first knows, or reasonably should have known, that such additional Registration Statement is required under such Section. "HOLDER" or "HOLDERS" means the holder or holders, as the case may be, from time to time of Registrable Securities. "INDEMNIFIED PARTY" shall have the meaning set forth in Section 5(c). "INDEMNIFYING PARTY" shall have the meaning set forth in Section 5(c). "LOSSES" shall have the meaning set forth in Section 5(a). "PROCEEDING" means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial proceeding, such as a deposition), whether commenced or threatened. "PROSPECTUS" means the prospectus included in a Registration Statement (including, without limitation, a prospectus that includes any information previously omitted from a prospectus filed as part of an effective registration statement in reliance upon Rule 430A promulgated under the Securities Act), as amended or supplemented by any prospectus supplement, with respect to the terms of the offering of any portion of the Registrable Securities covered by a Registration Statement, and all other amendments and supplements to the Prospectus, including post-effective amendments, and all material incorporated by reference or deemed to be incorporated by reference in such Prospectus. "REGISTRABLE SECURITIES" means the Common Shares, Underlying Shares and Warrant Shares, together with any securities issued or issuable upon any stock split, dividend or other distribution, recapitalization or similar event with respect to the foregoing. "REGISTRATION STATEMENT" means each of the following: (a) an initial registration statement which is required to register the resale of not less than 125% of the Registrable Securities measured on the Closing Date, the Filing Date or the date of request for acceleration of such registration statement (whichever yields the highest number of shares), (b) each additional registration statement, if any, contemplated by Section 2(c), and (c) including, in each case, the Prospectus, amendments and supplements to each such registration statement or Prospectus, including pre- and post-effective amendments, all exhibits thereto, and all material incorporated by reference or deemed to be incorporated by reference in such registration statement. "RULE 144" means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. -2-

"RULE 415" means Rule 415 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. "RULE 424" means Rule 424 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. "UNDERLYING SHARES" means the shares of Common Stock issuable upon conversion of the Debentures. "SPECIAL COUNSEL" means legal counsel to a Purchaser who will be reimbursed by the Company pursuant to Section 4. "WARRANT SHARES" means the shares of Common Stock issuable upon exercise of the Warrants. "WARRANTS" mean the Common Stock Warrants, the Debenture Warrants and Adjustment Warrant issued or issuable under the Purchase Agreement. 2. REGISTRATION. (a) On or prior to each Filing Date, the Company shall prepare and file with the Commission a Registration Statement covering the resale of all Registrable Securities required to be included in such Registration Statement for an offering to be made on a continuous basis pursuant to Rule 415. Each Registration Statement shall be on Form S-3 (except if the Company is not then eligible to register for resale the Registrable Securities on Form S-3, in which case such registration shall be on another appropriate form in accordance herewith) and shall contain (except if otherwise required by the Commission) the "PLAN OF DISTRIBUTION" attached hereto as ANNEX A. The Company shall use its best efforts to cause each Registration Statement to be declared effective under the Securities Act as promptly as possible, but in any event prior to the applicable Effectiveness Date, and shall use its best efforts to keep such Registration Statement continuously effective under the Securities Act until the date which is two years after the date that such Registration Statement is declared effective by the Commission or such earlier date when all Registrable Securities covered by a Registration Statement have been sold or may be sold without volume restrictions pursuant to Rule 144(k) as determined by the counsel to the Company pursuant to a written opinion letter to such effect, addressed and acceptable to the Company's transfer agent and the affected Holders (the "EFFECTIVENESS PERIOD"). (b) If: (i) a Registration Statement is not filed on or prior to its Filing Date (if the Company files a Registration Statement without affording the Holder the opportunity to review and comment on the same as required by Section 3(a), the Company shall not be deemed to have satisfied clause (i)), or (ii) the Company fails to file with the Commission a request for acceleration in accordance with Rule 461 promulgated under the Securities Act, within five Trading Days of the date that the Company is notified (orally or in writing, whichever is earlier) by the Commission that a Registration Statement -3-

will not be "reviewed," or not subject to further review, or (iii) prior to its Effective Date, the Company fails to file a pre-effective amendment and otherwise respond in writing to comments made by the Commission in respect of such Registration Statement within fifteen Trading Days after the receipt of comments by or notice from the Commission that such amendment is required in order for a Registration Statement to be declared effective, or (iv) a Registration Statement filed or required to be filed hereunder is not declared effective by the Commission by its Effectiveness Date, or (v) after the Effective Date, a Registration Statement ceases for any reason to remain continuously effective as to all Registrable Securities for which it is required to be effective, or the Holders are not permitted to utilize the Prospectus therein to resell such Registrable Securities, for in any such cases an aggregate of twenty Trading Days (which need not be consecutive Trading Days) (any such failure or breach being referred to as an "EVENT," and for purposes of clause (i) or (iv) the date on which such Event occurs, or for purposes of clause (ii) the date on which such five Trading Day period is exceeded, or for purposes of clauses (iii) the date which such fifteen Trading Day period is exceeded, or for purposes of clause (v) the date on which such twenty Trading Day period is exceeded being referred to as "EVENT DATE"), then in addition to any other rights the Holders may have under any Transaction Document (including any right to require the payment in full of the Mandatory Prepayment Amount under the Debentures), or applicable law (it being agreed that these damages are not to be construed as the sole remedy for any Event but are in addition to any other damages and remedies which may be or become due under the Transaction Documents): (x) on each such Event Date the Company shall pay to each Holder an amount in cash, as liquidated damages and not as a penalty, equal to 1.5% of the aggregate investment amount paid by such Holder pursuant to the Purchase Agreement; and (y) on each monthly anniversary of each such Event Date (if the applicable Event shall not have been cured by such date) until the applicable Event is cured, the Company shall pay to each Holder an amount in cash, as liquidated damages and not as a penalty, equal to 1.5% of the aggregate investment amount paid by such Holder pursuant to the Purchase Agreement. If the Company fails to pay any liquidated damages pursuant to this Section in full within seven days after the date payable, the Company will pay interest thereon at a rate of 12% per annum (or such lesser maximum amount that is permitted to be paid by applicable law) to the Holder, accruing daily from the date such liquidated damages are due until such amounts, plus all such interest thereon, are paid in full. Each Holder agrees that it will provide the Company with any comments such Holder may have to a Registration Statement within five Trading Days after such Holder's receipt of such Registration Statement. The Company shall not be liable to pay any liquidated damages to a Holder due to a delay in the Effectiveness Date if such delay is a result of such Holder's failure to provide the Company with such Holders' comments to a Registration Statement. Notwithstanding the foregoing, the amount of liquidated damages with respect to a Registration Statement covering the Warrant Shares with respect to the Adjustment Warrant (if such Warrant Shares are not included in the first Registration Statement filed following the date hereof) shall be based on 1.5% times the lesser of (i) the aggregate investment amount paid by such Holder pursuant to the Purchase Agreement and (ii) the product of the Closing Price on the Trading Day immediately prior to the Event Date at issue multiplied by the number of Warrant Shares at issue. (c) If the number of Registrable Securities issuable at any time exceeds 85% of the number of shares of Common Stock then registered in a Registration Statement, then the Company shall file an additional Registration Statement covering the resale of by the Holders of not less than 125% of the -4-

number of Registrable Securities required in order that all Underlying Shares and all Warrant Shares issuable upon exercise of the Warrants would then be registered in accordance with this Agreement. (d) Notwithstanding anything herein to the contrary, the Company shall prepare and file a Registration Statement covering the resale of shares of Common Stock issuable upon exercise of each Adjustment Warrant within 30 days following each issuance of such Adjustable Warrant. 3. REGISTRATION PROCEDURES In connection with the Company's registration obligations hereunder, the Company shall: (a) Not less than five Trading Days prior to the filing of the Registration Statement or any related Prospectus or any amendment or supplement thereto, the Company shall, (i) furnish to the Holders and their Special Counsel copies of all such documents proposed to be filed (including documents incorporated or deemed incorporated by reference) which documents will be subject to the review of such Holders and their Special Counsel, and (ii) cause its officers and directors, counsel and independent certified public accountants to respond to such inquiries as shall be necessary, in the reasonable opinion of respective counsel to conduct a reasonable investigation within the meaning of the Securities Act. The Company shall not file the Registration Statement or any such Prospectus or any amendments or supplements thereto to which the Holders of a majority of the Registrable Securities and their Special Counsel shall reasonably object in good faith. (b) (i) Prepare and file with the Commission such amendments, including post-effective amendments, to the Registration Statement and the Prospectus used in connection therewith as may be necessary to keep the Registration Statement continuously effective as to the applicable Registrable Securities for the Effectiveness Period and prepare and file with the Commission such additional Registration Statements in order to register for resale under the Securities Act all of the Registrable Securities; (ii) cause the related Prospectus to be amended or supplemented by any required Prospectus supplement, and as so supplemented or amended to be filed pursuant to Rule 424; (iii) respond as promptly as reasonably possible, and in any event within fifteen Trading Days, to any comments received from the Commission with respect to the Registration Statement or any amendment thereto and, as promptly as reasonably possible provide the Holders true and complete copies of all correspondence from and to the Commission relating to the Registration Statement; and (iv) comply in all material respects with the provisions of the Securities Act and the Exchange Act with respect to the disposition of all Registrable Securities covered by the Registration Statement during the applicable period in accordance with the intended methods of disposition by the Holders thereof set forth in the Registration Statement as so amended or in such Prospectus as so supplemented. (c) Notify the Holders of Registrable Securities to be sold and their Special Counsel as promptly as reasonably possible (and, in the case of (i)(A) below, not less than three Trading Days prior to such filing) and (if requested by any such Person) confirm such notice in writing no later than one Trading Day following the day (i)(A) when a Prospectus or any Prospectus -5-

supplement or post-effective amendment to the Registration Statement is proposed to be filed; (B) when the Commission notifies the Company whether there will be a "review" of such Registration Statement and whenever the Commission comments in writing on such Registration Statement (the Company shall provide true and complete copies thereof and all written responses thereto to each of the Holders); and (C) with respect to the Registration Statement or any post-effective amendment, when the same has become effective; (ii) of any request by the Commission for amendments or supplements to the Registration Statement or Prospectus or for additional information; (iii) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement covering any or all of the Registrable Securities or the initiation of any Proceedings for that purpose; (iv) of the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Registrable Securities for sale in any jurisdiction, or the initiation or threatening of any Proceeding for such purpose; and (v) of the occurrence of any event or passage of time that makes the financial statements included in the Registration Statement ineligible for inclusion therein or any statement made in the Registration Statement or Prospectus or any document incorporated or deemed to be incorporated therein by reference untrue in any material respect or that requires any revisions to the Registration Statement, Prospectus or other documents so that, in the case of the Registration Statement or the Prospectus, as the case may be, it will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading. (d) Use its best efforts to avoid the issuance of, or, if issued, obtain the withdrawal of (i) any order suspending the effectiveness of the Registration Statement, or (ii) any suspension of the qualification (or exemption from qualification) of any of the Registrable Securities for sale in any jurisdiction, at the earliest practicable moment. (e) Furnish to each Holder and their Special Counsel, without charge, at least one conformed copy of each Registration Statement and each amendment thereto, including financial statements and schedules, all documents incorporated or deemed to be incorporated therein by reference, and all exhibits to the extent requested by such Person (including those previously furnished or incorporated by reference) promptly after the filing of such documents with the Commission; provided, however, if the Registration Statement is on Form S-3, then the Company shall not be obligated to provide copies of any financial statements incorporated by reference therein, but only to the extent that such financial statements have been previously filed with the Commission. (f) Promptly deliver to each Holder and their Special Counsel, without charge, as many copies of the Prospectus or Prospectuses (including each form of prospectus) and each amendment or supplement thereto as such Persons may reasonably request. The Company hereby consents to the use of such Prospectus and each amendment or supplement thereto by each of the selling Holders in connection with the offering and sale of the Registrable Securities covered by such Prospectus and any amendment or supplement thereto and each Holder agrees to comply with the prospectus delivery requirements in accordance with the Securities Act in connection with sales made by such Holder of the Registrable Securities. -6-

(g) Prior to any public offering of Registrable Securities, use its best efforts to register or qualify or cooperate with the selling Holders and their Special Counsel in connection with the registration or qualification (or exemption from such registration or qualification) of such Registrable Securities for offer and sale under the securities or Blue Sky laws of such jurisdictions within the United States as any Holder requests in writing, to keep each such registration or qualification (or exemption therefrom) effective during the Effectiveness Period and to do any and all other acts or things necessary or advisable to enable the disposition in such jurisdictions of the Registrable Securities covered by a Registration Statement; PROVIDED, that the Company shall not be required to qualify generally to do business in any jurisdiction where it is not then so qualified or subject the Company to any material tax in any such jurisdiction where it is not then so subject. (h) Cooperate with the Holders to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be delivered to a transferee pursuant to a Registration Statement, which certificates shall be free, to the extent permitted by the Purchase Agreement, of all restrictive legends, and to enable such Registrable Securities to be in such denominations and registered in such names as any such Holders may request. (i) Upon the occurrence of any event contemplated by Section 3(c)(v), as promptly as reasonably possible, prepare a supplement or amendment, including a post-effective amendment, to the Registration Statement or a supplement to the related Prospectus or any document incorporated or deemed to be incorporated therein by reference, and file any other required document so that, as thereafter delivered, neither the Registration Statement nor such Prospectus will contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading. (j) Comply with all applicable rules and regulations of the Commission. (k) The Company may require, at any time prior to the third Trading Day prior to the Filing Date, each selling Holder to furnish to the Company a certified statement as to the number of shares of Common Stock beneficially owned by such Holder and, if requested by the Commission, the controlling person thereof, within three Trading Days of the Company's request. 4. REGISTRATION EXPENSES. All fees and expenses incident to the performance of or compliance with this Agreement by the Company shall be borne by the Company whether or not any Registrable Securities are sold pursuant to the Registration Statement. The fees and expenses referred to in the foregoing sentence shall include, without limitation, (i) all registration and filing fees (including, without limitation, fees and expenses (A) with respect to filings required to be made with the Trading Market on which the Common Stock is then listed for trading, and (B) in compliance with applicable state securities or Blue Sky laws), (ii) printing expenses (including, without limitation, expenses of printing certificates for Registrable Securities and of printing prospectuses if the printing of prospectuses is reasonably requested by the holders of a majority of the Registrable Securities included in the Registration Statement), (iii) messenger, telephone and delivery expenses, (iv) fees and disbursements of counsel for the Company, (v) Securities Act liability insurance, if the Company -7-

so desires such insurance, and (vi) fees and expenses of all other Persons retained by the Company in connection with the consummation of the transactions contemplated by this Agreement. In addition, the Company shall be responsible for all of its internal expenses incurred in connection with the consummation of the transactions contemplated by this Agreement (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expense of any annual audit and the fees and expenses incurred in connection with the listing of the Registrable Securities on any securities exchange as required hereunder. 5. INDEMNIFICATION (a) INDEMNIFICATION BY THE COMPANY. The Company shall, notwithstanding any termination of this Agreement, indemnify and hold harmless each Holder, the officers, directors, agents, brokers (including brokers who offer and sell Registrable Securities as principal as a result of a pledge or any failure to perform under a margin call of Common Stock), investment advisors and employees of each of them, each Person who controls any such Holder (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) and the officers, directors, agents and employees of each such controlling Person, to the fullest extent permitted by applicable law, from and against any and all losses, claims, damages, liabilities, costs (including, without limitation, reasonable costs of preparation and reasonable attorneys' fees) and expenses (collectively, "Losses"), as incurred, arising out of or relating to any untrue or alleged untrue statement of a material fact contained in the Registration Statement, any Prospectus or any form of prospectus or in any amendment or supplement thereto or in any preliminary prospectus, or arising out of or relating to any omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein (in the case of any Prospectus or form of prospectus or supplement thereto, in light of the circumstances under which they were made) not misleading, except to the extent, but only to the extent, that (1) such untrue statements or omissions are based solely upon information regarding such Holder furnished in writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder's proposed method of distribution of Registrable Securities and was reviewed and expressly approved in writing by such Holder expressly for use in the Registration Statement, such Prospectus or such form of Prospectus or in any amendment or supplement thereto (it being understood that the Holder has approved Annex A hereto for this purpose) or (2) in the case of an occurrence of an event of the type specified in Section 3(c)(ii)-(v), the use by such Holder of an outdated or defective Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated or defective and prior to the receipt by such Holder of the Advice contemplated in Section 6(d). The Company shall notify the Holders promptly of the institution, threat or assertion of any Proceeding of which the Company is aware in connection with the transactions contemplated by this Agreement. (b) INDEMNIFICATION BY HOLDERS. Each Holder shall, severally and not jointly, indemnify and hold harmless the Company, its directors, officers, agents and employees, each Person who controls the Company (within the meaning of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the directors, officers, agents or employees of such controlling Persons, to the fullest extent permitted by applicable law, from and against all Losses, as incurred, arising solely out of or based solely upon: (x) such Holder's failure to comply with the prospectus delivery requirements of the Securities Act or (y) any untrue statement of a material fact contained in any Registration Statement, -8-

any Prospectus, or any form of prospectus, or in any amendment or supplement thereto, or arising solely out of or based solely upon any omission of a material fact required to be stated therein or necessary to make the statements therein not misleading to the extent, but only to the extent, that such untrue statement or omission is contained in any information so furnished in writing by such Holder to the Company specifically for inclusion in such Registration Statement or such Prospectus or to the extent that (1) such untrue statements or omissions are based solely upon information regarding such Holder furnished in writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder's proposed method of distribution of Registrable Securities and was reviewed and expressly approved in writing by such Holder expressly for use in the Registration Statement (it being understood that the Holder has approved Annex A hereto for this purpose), such Prospectus or such form of Prospectus or in any amendment or supplement thereto or (2) in the case of an occurrence of an event of the type specified in Section 3(c)(ii)-(v), the use by such Holder of an outdated or defective Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated or defective and prior to the receipt by such Holder of the Advice contemplated in Section 6(d). In no event shall the liability of any selling Holder hereunder be greater in amount than the dollar amount of the net proceeds received by such Holder upon the sale of the Registrable Securities giving rise to such indemnification obligation. (c) CONDUCT OF INDEMNIFICATION PROCEEDINGS. If any Proceeding shall be brought or asserted against any Person entitled to indemnity hereunder (an "INDEMNIFIED PARTY"), such Indemnified Party shall promptly notify the Person from whom indemnity is sought (the "INDEMNIFYING PARTY") in writing, and the Indemnifying Party shall assume the defense thereof, including the employment of counsel reasonably satisfactory to the Indemnified Party and the payment of all fees and expenses incurred in connection with defense thereof; provided, that the failure of any Indemnified Party to give such notice shall not relieve the Indemnifying Party of its obligations or liabilities pursuant to this Agreement, except (and only) to the extent that it shall be finally determined by a court of competent jurisdiction (which determination is not subject to appeal or further review) that such failure shall have proximately and materially adversely prejudiced the Indemnifying Party. An Indemnified Party shall have the right to employ separate counsel in any such Proceeding and to participate in the defense thereof, but the fees and expenses of such counsel shall be at the expense of such Indemnified Party or Parties unless: (1) the Indemnifying Party has agreed in writing to pay such fees and expenses; (2) the Indemnifying Party shall have failed promptly to assume the defense of such Proceeding and to employ counsel reasonably satisfactory to such Indemnified Party in any such Proceeding; or (3) the named parties to any such Proceeding (including any impleaded parties) include both such Indemnified Party and the Indemnifying Party, and such Indemnified Party shall have been advised by counsel that a conflict of interest is likely to exist if the same counsel were to represent such Indemnified Party and the Indemnifying Party (in which case, if such Indemnified Party notifies the Indemnifying Party in writing that it elects to employ separate counsel at the expense of the Indemnifying Party, the Indemnifying Party shall not have the right to assume the defense thereof on behalf of the Indemnified Party and such additional counsel shall be at the expense of the Indemnifying Party). The -9-

Indemnifying Party shall not be liable for any settlement of any such Proceeding effected without its written consent, which consent shall not be unreasonably withheld. No Indemnifying Party shall, without the prior written consent of the Indemnified Party, effect any settlement of any pending Proceeding in respect of which any Indemnified Party is a party, unless such settlement includes an unconditional release of such Indemnified Party from all liability on claims that are the subject matter of such Proceeding. All fees and expenses of the Indemnified Party (including reasonable fees and expenses to the extent incurred in connection with investigating or preparing to defend such Proceeding in a manner not inconsistent with this Section) shall be paid to the Indemnified Party, as incurred, within ten Trading Days of written notice thereof to the Indemnifying Party (regardless of whether it is ultimately determined that an Indemnified Party is not entitled to indemnification hereunder; PROVIDED, that the Indemnifying Party may require such Indemnified Party to undertake to reimburse all such fees and expenses to the extent it is finally judicially determined that such Indemnified Party is not entitled to indemnification hereunder). (d) CONTRIBUTION. If a claim for indemnification under Section 5(a) or 5(b) is unavailable to an Indemnified Party (by reason of public policy or otherwise), then each Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall contribute to the amount paid or payable by such Indemnified Party as a result of such Losses, in such proportion as is appropriate to reflect the relative fault of the Indemnifying Party and Indemnified Party in connection with the actions, statements or omissions that resulted in such Losses as well as any other relevant equitable considerations. The relative fault of such Indemnifying Party and Indemnified Party shall be determined by reference to, among other things, whether any action in question, including any untrue or alleged untrue statement of a material fact or omission or alleged omission of a material fact, has been taken or made by, or relates to information supplied by, such Indemnifying Party or Indemnified Party, and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such action, statement or omission. The amount paid or payable by a party as a result of any Losses shall be deemed to include, subject to the limitations set forth in Section 5(c), any reasonable attorneys' or other reasonable fees or expenses incurred by such party in connection with any Proceeding to the extent such party would have been indemnified for such fees or expenses if the indemnification provided for in this Section was available to such party in accordance with its terms. The parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 5(d) were determined by pro rata allocation or by any other method of allocation that does not take into account the equitable considerations referred to in the immediately preceding paragraph. Notwithstanding the provisions of this Section 5(d), no Holder shall be required to contribute, in the aggregate, any amount in excess of the amount by which the proceeds actually received by such Holder from the sale of the Registrable Securities subject to the Proceeding exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. The indemnity and contribution agreements contained in this Section are in addition to any liability that the Indemnifying Parties may have to the Indemnified Parties. -10-

6. MISCELLANEOUS (a) REMEDIES. In the event of a breach by the Company or by a Holder, of any of their obligations under this Agreement, each Holder or the Company, as the case may be, in addition to being entitled to exercise all rights granted by law and under this Agreement, including recovery of damages, will be entitled to specific performance of its rights under this Agreement. The Company and each Holder agree that monetary damages would not provide adequate compensation for any losses incurred by reason of a breach by it of any of the provisions of this Agreement and hereby further agree that, in the event of any action for specific performance in respect of such breach, it shall waive the defense that a remedy at law would be adequate. (b) OTHER REGISTRATIONS. Prior to the third month anniversary of the Effective Date, the Company shall not, directly or indirectly, file any other registration statement with the Commission with respect to any securities of the Company, except for a Form S-8 or a prospectus supplement or amendment to any current effective registration statement; provided that no such registration statement shall have the effect of registering additional shares of Common Stock originally covered by such registration statement or realizing a lower price per share than as initially disclosed in such registration statement. Except as and to the extent specified in SCHEDULE 6(B) hereto or as otherwise contemplated by the Transaction Documents or for the registration rights granted pursuant to the ZLP Purchase Agreement (and the transactions contemplated thereby), neither the Company nor any of its security holders (other than the Holders in such capacity pursuant hereto) may include securities of the Company in the Registration Statement other than the Registrable Securities, and the Company shall not after the date hereof enter into any agreement providing any such right to any of its security holders. Except as and to the extent specified in this Agreement or in SCHEDULE 6(B) hereto, the Company has not previously entered into any agreement granting any registration rights with respect to any of its securities to any Person which have not been fully satisfied. (c) COMPLIANCE. Each Holder covenants and agrees that it will comply with the prospectus delivery requirements of the Securities Act as applicable to it in connection with sales of Registrable Securities pursuant to the Registration Statement. (d) DISCONTINUED DISPOSITION. Each Holder agrees by its acquisition of such Registrable Securities that, upon receipt of a notice from the Company of the occurrence of any event of the kind described in Section 3(c), such Holder will forthwith discontinue disposition of such Registrable Securities under the Registration Statement until such Holder's receipt of the copies of the supplemented Prospectus and/or amended Registration Statement or until it is advised in writing (the "ADVICE") by the Company that the use of the applicable Prospectus may be resumed, and, in either case, has received copies of any additional or supplemental filings that are incorporated or deemed to be incorporated by reference in such Prospectus or Registration Statement. The Company may provide appropriate stop orders to enforce the provisions of this paragraph. (e) PIGGY-BACK REGISTRATIONS. If at any time during the Effectiveness Period there is not an effective Registration Statement covering all of the Registrable Securities and the Company shall determine to prepare and file with the Commission a registration statement relating to an offering for -11-

its own account or the account of others under the Securities Act of any of its equity securities, other than on Form S-4 or Form S-8 (each as promulgated under the Securities Act) or their then equivalents relating to equity securities to be issued solely in connection with any acquisition of any entity or business or equity securities issuable in connection with stock option or other employee benefit plans, then the Company shall send to each Holder written notice of such determination and, if within fifteen days after receipt of such notice, any such Holder shall so request in writing, the Company shall include in such registration statement all or any part of such Registrable Securities such holder requests to be registered, subject to customary underwriter cutbacks applicable to all holders of registration rights. (f) AMENDMENTS AND WAIVERS. The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given, unless the same shall be in writing and signed by the Company and the Holders of at least two-thirds of the then outstanding Registrable Securities. (g) NOTICES. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Agreement later than 6:30 p.m. (New York City time) on any date and earlier than 11:59 p.m. (New York City time) on such date, (iii) the Trading Day following the date of mailing, if sent for next day delivery by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The address for such notices and communications shall be as follows: If to the Company: Peregrine Pharmaceuticals, Inc. 14272 Franklin Avenue Tustin, California 92780 Facsimile No.: (714) 838-5817 Attn: Chief Financial Officer With a copy to: Jeffers, Shaff & Falk, LLP 18881 Von Karman Avenue, Suite 1400 Irvine, CA 92612 Facsimile No.: (949) 660-7799 Attn: Mark R. Ziebell, Esq. If to a Purchaser: To the address set forth under such Purchaser's name on the signature pages hereto. -12-

If to any other Person who is then the registered Holder: To the address of such Holder as it appears in the stock transfer books of the Company or such other address as may be designated in writing hereafter, in the same manner, by such Person. (h) SUCCESSORS AND ASSIGNS. This Agreement shall inure to the benefit of and be binding upon the successors and permitted assigns of each of the parties and shall inure to the benefit of each Holder. The Company may not assign its rights or obligations hereunder without the prior written consent of each Holder. Each Holder may assign its rights hereunder in the manner and to the Persons as permitted under the Purchase Agreement. (i) EXECUTION AND COUNTERPARTS. This Agreement may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original and, all of which taken together shall constitute one and the same Agreement. In the event that any signature is delivered by facsimile transmission, such signature shall create a valid binding obligation of the party executing (or on whose behalf such signature is executed) the same with the same force and effect as if such facsimile signature were the original thereof. (j) GOVERNING LAW. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all Proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a party hereto or its respective affiliates, directors, officers, stockholders, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of the any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert in any Proceeding, any claim that it is not personally subject to the jurisdiction of any such court or that such Proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby. If either party shall commence a Proceeding to enforce any provisions of a Transaction Document, then the prevailing party in such Proceeding shall be reimbursed by the other party for its attorney's fees and other costs and expenses incurred with the investigation, preparation and prosecution of such Proceeding. -13-

(k) CUMULATIVE REMEDIES. The remedies provided herein are cumulative and not exclusive of any remedies provided by law. (l) SEVERABILITY. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated, and the parties hereto shall use their reasonable efforts to find and employ an alternative means to achieve the same or substantially the same result as that contemplated by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention of the parties that they would have executed the remaining terms, provisions, covenants and restrictions without including any of such that may be hereafter declared invalid, illegal, void or unenforceable. (m) HEADINGS. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof. (n) INDEPENDENT NATURE OF PURCHASERS' OBLIGATIONS AND RIGHTS. The obligation of each Purchaser hereunder is several and not joint with the obligations of any other Purchaser hereunder, and no Purchaser shall be responsible in any way for the performance of the obligations of any other Purchaser hereunder. Nothing contained herein or in any other agreement or document delivered at any closing, and no action taken by any Purchaser pursuant hereto or thereto, shall be deemed to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Purchasers are in any way acting in concert with respect to such obligations or the transactions contemplated by this Agreement. Each Purchaser shall be entitled to protect and enforce its rights, including without limitation the rights arising out of this Agreement, and it shall not be necessary for any other Purchaser to be joined as an additional party in any proceeding for such purpose. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES TO FOLLOW] -14-

IN WITNESS WHEREOF, the parties have executed this Registration Rights Agreement as of the date first written above. PEREGRINE PHARMACEUTICALS, INC By: ----------------------------------- Name: Title: [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES OF PURCHASER TO FOLLOW] -15-

IN WITNESS WHEREOF, the parties have executed this Registration Rights Agreement as of the date first written above. By: ----------------------------------------- Name: Title: Address for Notice: with a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. -16-

ANNEX A PLAN OF DISTRIBUTION -------------------- The Selling Stockholders and any of their pledgees, assignees and successors-in-interest may, from time to time, sell any or all of their shares of Common Stock on any stock exchange, market or trading facility on which the shares are traded or in private transactions. These sales may be at fixed or negotiated prices. The Selling Stockholders may use any one or more of the following methods when selling shares: o ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; o block trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction; o purchases by a broker-dealer as principal and resale by the broker-dealer for its account; o an exchange distribution in accordance with the rules of the applicable exchange; o privately negotiated transactions; o short sales o broker-dealers may agree with the Selling Stockholders to sell a specified number of such shares at a stipulated price per share; o a combination of any such methods of sale; and o any other method permitted pursuant to applicable law. The Selling Stockholders may also sell shares under Rule 144 under the Securities Act, if available, rather than under this prospectus. Broker-dealers engaged by the Selling Stockholders may arrange for other brokers-dealers to participate in sales. Broker-dealers may receive commissions or discounts from the Selling Stockholders (or, if any broker-dealer acts as agent for the purchaser of shares, from the purchaser) in amounts to be negotiated. The Selling Stockholders do not expect these commissions and discounts to exceed what is customary in the types of transactions involved. The Selling Stockholders may from time to time pledge or grant a security interest in some or all of the shares of Common Stock, Debentures or Warrants owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and sell the shares of Common Stock from time to time under this prospectus, or under an amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act of 1933 amending the list of Selling Stockholders to include the pledgee, transferee or other successors in interest as Selling Stockholders under this prospectus. -17-

The Selling Stockholders also may transfer the shares of Common Stock in other circumstances, in which case the transferees, pledgees or other successors in interest will be the selling beneficial owners for purposes of this prospectus. The Selling Stockholders and any broker-dealers or agents that are involved in selling the shares may be deemed to be "underwriters" within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act. Each Selling Stockholder has informed the Company that it does not have any agreement or understanding, directly or indirectly, with any person to distribute the Common Stock. The selling shareholders may enter into hedging transactions with third parties, which may in turn engage in short sales of the securities in the course of hedging the position they assume. The selling shareholders may also enter into short positions or other derivative transactions relating to the securities, or interests in the securities, and deliver the securities, or interests in the securities, to close out their short or other positions or otherwise settle short sales or other transactions, or loan or pledge the securities, or interests in the securities, to third parties that in turn may dispose of these securities. The Company is required to pay all fees and expenses incident to the registration of the shares. The Company has agreed to indemnify the Selling Stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act. -18-

EXHIBIT 10.80 FORM OF COMMON STOCK WARRANT UNDER SECURITIES PURCHASE AGREEMENT NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. PEREGRINE PHARMACEUTICALS, INC. WARRANT Warrant No. CS-[ ] Date of Original Issuance: August 9, 2002 Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), hereby certifies that, for value received, [investor name] or its registered assigns (the "HOLDER"), is entitled to purchase from the Company up to a total of [ ] shares of common stock, $.001 par value per share (the "COMMON STOCK"), of the Company (each such share, a "WARRANT SHARE" and all such shares, the "WARRANT SHARES"), at an exercise price (as adjusted from time to time as provided in Section 9, the "EXERCISE PRICE") per Warrant Share equal to $0.71, at any time and from time to time from and after the 6th month anniversary of the date hereof and through and including August 8, 2006 (the "EXPIRATION DATE"), and subject to the following terms and conditions: 1. DEFINITIONS. In addition to the terms defined elsewhere in this Warrant, capitalized terms that are not otherwise defined herein that are defined in the Securities Purchase Agreement, dated as of the date of original issuance of this Warrant, to which the Company and the original Holder are parties (the "PURCHASE AGREEMENT"), shall have the meanings given to such terms in the Purchase Agreement. 2. REGISTRATION OF WARRANT. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose (the "WARRANT REGISTER"), in the name of the record Holder hereof from time to time. The

Company may treat the registered Holder as the absolute owner hereof for the purpose of any exercise hereof or any distribution to the Holder, and for all other purposes, absent actual notice to the contrary. 3. REGISTRATION OF TRANSFERS. The Company shall register the transfer of any portion of this Warrant in the Warrant Register, upon surrender of this Warrant, with the Form of Assignment attached hereto duly completed and signed, to the Transfer Agent or to the Company at its address specified herein. Upon any such registration or transfer, a new warrant to purchase Common Stock, in substantially the form of this Warrant (any such new warrant, a "NEW WARRANT"), evidencing the portion of this Warrant so transferred shall be issued to the transferee and a New Warrant evidencing the remaining portion of this Warrant not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Warrant by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a holder of a Warrant. 4. EXERCISE AND DURATION. Subject to the provisions of Section 5, this Warrant shall be exercisable by the registered Holder at any time and from time to time on or after the 6th month anniversary of the date hereof to and including the Expiration Date. At 6:30 p.m., New York City time on the Expiration Date, the portion of this Warrant available for exercise and not exercised prior thereto shall be and become void and of no value. The Company may not call or redeem all or any portion of this Warrant without the prior written consent of the Holder. 5. DELIVERY OF WARRANT SHARES. (a) To effect conversions hereunder, the Holder shall not be required to physically surrender this Warrant unless the aggregate Warrant Shares represented by this Warrant is being exercised. Upon delivery of the Form of Election to Purchase to the Company (with the attached Warrant Shares Exercise Log) at its address for notice set forth in Section 13 and upon payment of the Exercise Price multiplied by the number of Warrant Shares that the Holder intends to purchase hereunder, the Company shall promptly (but in no event later than three Trading Days after the Date of Exercise (as defined herein)) issue and deliver to the Holder, a certificate for the Warrant Shares issuable upon such exercise free of restrictive legends unless otherwise required by the Purchase Agreement. The Company shall, upon request of the Holder and subsequent to the date on which a registration statement covering the resale of the Warrant Shares has been declared effective by the Securities and Exchange Commission, use its best efforts to deliver Warrant Shares hereunder electronically through the Depository Trust Corporation or another established clearing corporation performing similar functions, if available, provided, that, the Company may, but will not be required to change its transfer agent if its current transfer agent cannot deliver Warrant Shares electronically through the Depository Trust Corporation. A "DATE OF EXERCISE" means the date on which the Holder shall have delivered to the Company: (i) the Form of Election to Purchase attached hereto (with the Warrant Exercise Log attached to it), appropriately completed and duly signed and (ii) payment of the Exercise Price for the number of Warrant Shares so indicated by the Holder to be purchased (and for purposes of this clause (ii), the parties agree that the giving to the Company of the federal wire reference number in connection with wire transfers shall constitute the payment of the Exercise Price). -2-

(b) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), then the Holder will have the right to rescind such exercise. (c) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), and if after such third Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a "BUY-IN"), then the Company shall (1) pay in cash to the Holder the amount by which (x) the Holder's total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (A) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue by (B) the closing bid price of the Common Stock at the time of the obligation giving rise to such purchase obligation and (2) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with a market price on the date of exercise totaled $10,000, under clause (1) of the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In. (d) The Company's obligations to issue and deliver Warrant Shares in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such obligation of the Company to the Holder in connection with the issuance of Warrant Shares. Nothing herein shall limit a Holder's right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company's failure to timely deliver certificates representing shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof. -3-

6. CHARGES, TAXES AND EXPENSES. Issuance and delivery of certificates for shares of Common Stock upon exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax, withholding tax (unless required by law), transfer agent fee or other incidental tax or expense in respect of the issuance of such certificates, all of which taxes and expenses shall be paid by the Company; provided, however, that the Company shall not be required to pay any tax which may be payable in respect of any transfer involved in the registration of any certificates for Warrant Shares or Warrants in a name other than that of the Holder. The Holder shall be responsible for all income and other tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof. 7. REPLACEMENT OF WARRANT. If this Warrant is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation hereof, or in lieu of and substitution for this Warrant, a New Warrant, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. Applicants for a New Warrant under such circumstances shall also comply with such other reasonable regulations and procedures and pay such other reasonable third-party costs as the Company may prescribe. 8. RESERVATION OF WARRANT SHARES. The Company covenants that it will at all times reserve and keep available out of the aggregate of its authorized but unissued and otherwise unreserved Common Stock, solely for the purpose of enabling it to issue Warrant Shares upon exercise of this Warrant as herein provided, the number of Warrant Shares which are then issuable and deliverable upon the exercise of this entire Warrant. The Company covenants that all Warrant Shares so issuable and deliverable shall, upon issuance and the payment of the applicable Exercise Price in accordance with the terms hereof, be duly and validly authorized, issued and fully paid and nonassessable. 9. CERTAIN ADJUSTMENTS. The Exercise Price and number of Warrant Shares issuable upon exercise of this Warrant are subject to adjustment from time to time as set forth in this Section 9. (a) STOCK DIVIDENDS AND SPLITS. If the Company, at any time while this Warrant is outstanding, (i) pays a stock dividend on its Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into a larger number of shares, or (iii) combines outstanding shares of Common Stock into a smaller number of shares, then in each such case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock outstanding immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately after such event. (b) PRO RATA DISTRIBUTIONS. If the Company, at any time while this Warrant is outstanding, distributes to all holders of Common Stock (i) evidences of its indebtedness, (ii) any security (other than a distribution of Common Stock covered by the preceding paragraph), (iii) rights or warrants to subscribe for or purchase any security, or (iv) any other asset (in each case, "DISTRIBUTED PROPERTY"), then, at the request of any Holder delivered on the -4-

record date fixed for determination of stockholders entitled to receive such distribution, the Company will deliver to such Holder, within five Trading Days after such request (or, if later, on the effective date of such distribution), the Distributed Property that such Holder would have been entitled to receive in respect of the Warrant Shares for which such Holder's Warrant could have been exercised immediately prior to such record date. If such Distributed Property is not delivered to a Holder pursuant to the preceding sentence, then upon any exercise of the Warrant that occurs after such record date, such Holder shall be entitled to receive, in addition to the Warrant Shares otherwise issuable upon such exercise, the Distributed Property that such Holder would have been entitled to receive in respect of such number of Warrant Shares had the Holder been the record holder of such Warrant Shares immediately prior to such record date. (c) FUNDAMENTAL TRANSACTIONS. If, at any time while this Warrant is outstanding: (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then the Holder shall have the right thereafter to receive, upon exercise of this Warrant, the same amount and kind of securities, cash or property as it would have been entitled to receive upon the occurrence of such Fundamental Transaction if it had been, immediately prior to such Fundamental Transaction, the holder of the number of Warrant Shares then issuable upon exercise in full of this Warrant (the "ALTERNATE CONSIDERATION"). For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental Transaction. At the Holder's option and request, any successor to the Company or surviving entity in such Fundamental Transaction shall purchase the Warrant from the Holder for a purchase price, payable in cash within five Trading Days after such request (or, if later, on the effective date of the Fundamental Transaction), equal to the Black Scholes value of the remaining unexercised portion of this Warrant on the date of the request, provided, that the successor to the Company or surviving entity in such Fundamental Transaction shall be entitled, in lieu of paying the aforementioned purchase price, to issue to the Holder a new warrant substantially in the form of this Warrant and consistent with the foregoing provisions and omitting subsection 9(d) below and evidencing the Holder's right to purchase the Alternate Consideration for the aggregate Exercise Price upon exercise thereof. The terms of any agreement pursuant to which a Fundamental Transaction is effected shall include terms requiring any such successor or surviving entity to comply with the provisions of this paragraph (c) and insuring that the Warrant (or any such replacement security) will be similarly adjusted upon any subsequent transaction analogous to a Fundamental Transaction. -5-

(d) SUBSEQUENT EQUITY SALES. (i) If the Company or any subsidiary thereof, at any time during the period between the Original Issue Date and the 18th month anniversary of the Effective Date (provided that such period shall be extended by the number of days in which the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the selling stockholders thereunder for the resale of the shares of Common Stock registered thereunder), as applicable with respect to Common Stock Equivalents (as defined below), at any time while this Warrant is outstanding, shall issue shares of Common Stock or rights, warrants, options or other securities or debt that is convertible into or exchangeable for shares of Common Stock ("COMMON STOCK Equivalents") entitling any Person to acquire shares of Common Stock, at a price per share less than the Exercise Price (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Exercise Price, such issuance shall be deemed to have occurred for less than the Exercise Price), then, at the option of the Holder for such exercises as it shall indicate, the Exercise Price shall be adjusted to equal the conversion, exchange or purchase price for such Common Stock or Common Stock Equivalents (including any reset provisions thereof) at issue and which adjusted Exercise Price shall continue for as long as this Warrants remain outstanding. Such adjustment shall be made whenever such Common Stock or Common Stock Equivalents are issued. The Company shall notify the Holder in writing, no later than the Trading Day following the issuance of any Common Stock or Common Stock Equivalent subject to this section, indicating therein the applicable issuance price, or of applicable reset price, exchange price, conversion price and other pricing terms. (ii) If, at any time while this Warrant is outstanding, the Company or any Subsidiary issues Common Stock Equivalents at a price per share that floats or resets or otherwise varies or is subject to adjustment based on market prices of the Common Stock (a "FLOATING PRICE SECURITY"), then for purposes of applying the preceding paragraph in connection with any subsequent exercise, the Exercise Price will be determined separately on each Exercise Date and will be deemed to equal the lowest price per share at which any holder of such Floating Price Security is entitled to acquire shares of Common Stock on such Exercise Date (regardless of whether any such holder actually acquires any shares on such date). (iii) Notwithstanding the foregoing, no adjustment will be made under this Section 6(d)(iii) as a result of: (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) to the Purchase Agreement (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction (as defined in the Purchase Agreement) or (iv) the -6-

issuance of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to any Approved Purchaser (as defined in the Purchase Agreement) pursuant to Registration Statement No. 333-71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the ZLP Purchase Agreement (or the transactions contemplated thereby). (iv) NUMBER OF WARRANT SHARES. Simultaneously with any adjustment to the Exercise Price pursuant to paragraphs (a) or (b) of this Section, the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment. (e) CALCULATIONS. All calculations under this SECTION 9 shall be made to the nearest cent or the nearest 1/100th of a share, as applicable. The number of shares of Common Stock outstanding at any given time shall not include shares owned or held by or for the account of the Company, and the disposition of any such shares shall be considered an issue or sale of Common Stock. (f) NOTICE OF ADJUSTMENTS. Upon the occurrence of each adjustment pursuant to this SECTION 9, the Company at its expense will promptly compute such adjustment in accordance with the terms of this Warrant and prepare a certificate setting forth such adjustment, including a statement of the adjusted Exercise Price and adjusted number or type of Warrant Shares or other securities issuable upon exercise of this Warrant (as applicable), describing the transactions giving rise to such adjustments and showing in detail the facts upon which such adjustment is based. Upon written request, the Company will promptly deliver a copy of each such certificate to the Holder and to the Company's Transfer Agent. (g) NOTICE OF CORPORATE EVENTS. If the Company (i) declares a dividend or any other distribution of cash, securities or other property in respect of its Common Stock, including without limitation any granting of rights or warrants to subscribe for or purchase any capital stock of the Company or any Subsidiary, (ii) authorizes or approves, enters into any agreement providing for or solicits stockholder approval for any Fundamental Transaction or (iii) authorizes the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder a notice describing the material terms and conditions of such transaction, at least 20 calendar days prior to the applicable record or effective date on which a Person would need to hold Common Stock in order to participate in or vote with respect to such transaction, and the Company will take all steps reasonably necessary in order to insure that the Holder is given the practical opportunity to exercise this Warrant prior to such time so as to participate in or vote with respect to such transaction; provided, however, that the failure to deliver such notice or any defect therein shall not affect the validity of the corporate action required to be described in such notice. 10. PAYMENT OF EXERCISE PRICE. The Holder shall pay the Exercise Price in one of the following manners: (a) CASH EXERCISE. The Holder may deliver immediately available funds; or -7-

(b) CASHLESS EXERCISE. At any time after the Effectiveness Date (as defined in the Registration Rights Agreement (as defined in the Purchase Agreement)), when such Registration Statement (as defined in the Registration Rights Agreement) covering the resale of the Warrant Shares and naming the Holder as a selling stockholder thereunder or the prospectus included therein is not then effective, the Holder may surrender this Warrant to the Company together with a notice of cashless exercise, in which event the Company shall issue to the Holder the number of Warrant Shares determined as follows: X = Y [(A-B)/A] where: X = the number of Warrant Shares to be issued to the Holder. Y = the number of Warrant Shares with respect to which this Warrant is being exercised. A = the average of the closing bid prices for the five Trading Days immediately prior to (but not including) the Exercise Date. B = the Exercise Price. For purposes of Rule 144 promulgated under the Securities Act, it is intended, understood and acknowledged that the Warrant Shares issued in a cashless exercise transaction shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the date this Warrant was originally issued pursuant to the Purchase Agreement. -8-

11. LIMITATIONS ON EXERCISE. (a) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 4.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. The provisions of this Section may be waived by a Holder (but only as to itself and not to any other Holder) upon not less than 61 days' prior notice to the Company. Other Holders shall be unaffected by any such waiver. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. (b) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 9.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. (c) If the Company has not obtained the Shareholder Approval (as defined below), then the Company may not issue in excess of 22,054,931 shares of Common Stock less: (A) any shares of Common Stock issued on the Closing Date pursuant to the Purchase Agreement and (B) any shares of Common Stock issued upon exercise of this Warrant and conversion of the Debentures and payment of interest thereon in shares of Common Stock, (C) any shares of Common Stock issued pursuant to the Adjustable Warrants (as defined in the Purchase Agreement) and the exercise of the Debenture Warrants (as defined in the Purchase Agreement), (D) any shares of Common Stock issued pursuant to the ZLP -9-

Purchase Agreement (and the transactions contemplated thereby) and (E) any sales of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to an Approved Purchaser (as defined in the Purchase Agreement) subsequent to the date hereof pursuant to the Company's Registration Statement No. 333-71086 (such number of shares, as adjusted from time to time, the "ISSUABLE MAXIMUM"). The Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained by dividing (x) the number of shares of Common Stock issued and sold to the Holder on the Closing Date by (y) the number of shares of Common Stock issued and sold by the Company on the Closing Date. If the Holder shall no longer hold the Warrant due to exercise or cancellation of the Warrant, then the Holder's remaining portion of the Issuable Maximum shall be allocated pro-rata among the remaining Holders. If on any Date of Exercise: (A) the aggregate number of shares of Common Stock that would then be issuable upon exercise in full of this Warrant would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the vote of shareholders (the "SHAREHOLDER APPROVAL"), if any, as may be required by the applicable rules and regulations of the Nasdaq SmallCap Market (or any successor entity) applicable to approve the issuance of shares of Common Stock in excess of the Issuable Maximum pursuant to the terms hereof, then the Company shall issue to the Holder a number of shares of Common Stock equal to the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum, with respect to the remainder of the Warrant Shares then issuable under the Warrant for which an exercise in accordance with the applicable exercise price would result in an issuance of shares of Common Stock in excess of the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum (the "EXCESS WARRANT SHARES"), the Company shall use its best efforts to obtain the Shareholder Approval applicable to such issuance as soon as is possible, but in any event not later than the 90th day after such request. In connection therewith, the board of directors of the Company shall: (a) adopt proper resolutions authorizing such increase in such authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain the Shareholder Approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 90th day after the delivery of the proxy materials relating to such meeting). The Company and the Holder understand and agree that shares of Common Stock issued to and then held by the Holder as a result of exercise of this Warrant shall not be entitled to cast votes on any resolution to obtain Shareholder Approval pursuant hereto. If the Company shall have used its best efforts to obtain the Shareholder Approval but nevertheless failed to obtain such Shareholder Approval, then this Warrant shall be cancelled and of no further force and effect. 12. NO FRACTIONAL SHARES. No fractional shares of Warrant Shares will be issued in connection with any exercise of this Warrant. In lieu of any fractional shares which would, otherwise be issuable, the Company shall pay cash equal to the product of such fraction multiplied by the closing bid price of one Warrant Share as reported on the Nasdaq National Market on the date of exercise. 13. NOTICES. Any and all notices or other communications or deliveries hereunder (including without limitation any Exercise Notice) shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the next Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the -10-

facsimile number specified in this Section on a day that is not a Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The addresses for such communications shall be: (i) if to the Company, to Peregrine Pharmaceuticals, Inc., 14272 Franklin Avenue, Tustin, California 92780, Facsimile No.: (714) 838-5817, Attn: Chief Financial Officer, or (ii) if to the Holder, to the address or facsimile number appearing on the Warrant Register or such other address or facsimile number as the Holder may provide to the Company in accordance with this Section. 14. WARRANT AGENT. The Company shall serve as warrant agent under this Warrant. Upon 30 days' notice to the Holder, the Company may appoint a new warrant agent. Any corporation into which the Company or any new warrant agent may be merged or any corporation resulting from any consolidation to which the Company or any new warrant agent shall be a party or any corporation to which the Company or any new warrant agent transfers substantially all of its corporate trust or shareholders services business shall be a successor warrant agent under this Warrant without any further act. Any such successor warrant agent shall promptly cause notice of its succession as warrant agent to be mailed (by first class mail, postage prepaid) to the Holder at the Holder's last address as shown on the Warrant Register. 15. MISCELLANEOUS. (a) This Warrant shall be binding on and inure to the benefit of the parties hereto and their respective successors and assigns. Subject to the preceding sentence, nothing in this Warrant shall be construed to give to any Person other than the Company and the Holder any legal or equitable right, remedy or cause of action under this Warrant. This Warrant may be amended only in writing signed by the Company and the Holder and their successors and assigns. (b) All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Warrant (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of this Warrant), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Warrant and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing -11-

contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto (including its affiliates, agents, officers, directors and employees) hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Warrant or the transactions contemplated hereby. If either party shall commence an action or proceeding to enforce any provisions of this Warrant, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. (c) The headings herein are for convenience only, do not constitute a part of this Warrant and shall not be deemed to limit or affect any of the provisions hereof. (d) In case any one or more of the provisions of this Warrant shall be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Warrant shall not in any way be affected or impaired thereby and the parties will attempt in good faith to agree upon a valid and enforceable provision which shall be a commercially reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Warrant. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK, SIGNATURE PAGE FOLLOWS] -12-

IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed by its authorized officer as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: -------------------------------- Name: Paul Lytle Title: V.P. Finance & Accounting -13-

FORM OF ELECTION TO PURCHASE To Peregrine Pharmaceuticals, Inc.: In accordance with Warrant No. _______ issued to the undersigned, the undersigned hereby elects to purchase _____________ shares of common stock ("COMMON STOCK"), $.001 par value per share, of Peregrine Pharmaceuticals, Inc., and, if such Holder is not utilizing the cashless exercise provisions set forth in this Warrant, encloses herewith $________ in cash, certified or official bank check or checks, which sum represents the aggregate Exercise Price (as defined in the Warrant) for the number of shares of Common Stock to which this Form of Election to Purchase relates. By its delivery of this Form of Election To Purchase, the Holder represents and warrants to the Company that in giving effect to the exercise evidenced hereby the Holder will not beneficially own in excess of the number of shares of Common Stock (determined in accordance with Section 13(d) of the Securities Exchange Act of 1934) permitted to be owned under Section 11 of this Warrant to which this notice relates. The undersigned requests that certificates for the shares of Common Stock issuable upon this exercise be issued in the name of PLEASE INSERT SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER (Please print name and address)

WARRANT SHARES EXERCISE LOG --------------------------- - ---------------- ----------------- ----------------- ----------------- Date Number of Warrant Number of Warrant Number of Warrant Shares Available Shares Exercised Shares Remaining to be Exercised to be Exercised - ---------------- ----------------- ----------------- ----------------- - ---------------- ----------------- ----------------- -----------------

FORM OF ASSIGNMENT [To be completed and signed only upon transfer of Warrant] FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto ________________________________ the right represented by the within Warrant to purchase ____________ shares of Common Stock of Peregrine Pharmaceuticals, Inc., to which the within Warrant relates and appoints ________________ attorney to transfer said right on the books of Peregrine Pharmaceuticals, Inc., with full power of substitution in the premises. Dated: _______________, ____ _____________________________________________ (Signature must conform in all respects to name of holder as specified on the face of the Warrant) _____________________________________________ Address of Transferee _____________________________________________ _____________________________________________ In the presence of: ________________________

EXHIBIT 10.81 FORM OF DEBENTURE WARRANT UNDER SECURITIES PURCHASE AGREEMENT NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. PEREGRINE PHARMACEUTICALS, INC. WARRANT Warrant No. D-[ ] Date of Original Issuance: August 9, 2002 Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), hereby certifies that, for value received, [investor name] or its registered assigns (the "HOLDER"), is entitled to purchase from the Company up to a total of [ ] shares of common stock, $.001 par value per share (the "COMMON STOCK"), of the Company (each such share, a "WARRANT SHARE" and all such shares, the "WARRANT SHARES"), at an exercise price (as adjusted from time to time as provided in Section 9, the "EXERCISE PRICE") per Warrant Share equal to $0.75, at any time and from time to time from and after the 6th month anniversary of the date hereof and through and including August 8, 2006 (the "EXPIRATION DATE"), and subject to the following terms and conditions: 1. DEFINITIONS. In addition to the terms defined elsewhere in this Warrant, capitalized terms that are not otherwise defined herein that are defined in the Securities Purchase Agreement, dated as of the date of original issuance of this Warrant, to which the Company and the original Holder are parties (the "PURCHASE AGREEMENT"), shall have the meanings given to such terms in the Purchase Agreement. 2. REGISTRATION OF WARRANT. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose (the "WARRANT REGISTER"), in the name of the record Holder hereof from time to time. The

Company may treat the registered Holder as the absolute owner hereof for the purpose of any exercise hereof or any distribution to the Holder, and for all other purposes, absent actual notice to the contrary. 3. REGISTRATION OF TRANSFERS. The Company shall register the transfer of any portion of this Warrant in the Warrant Register, upon surrender of this Warrant, with the Form of Assignment attached hereto duly completed and signed, to the Transfer Agent or to the Company at its address specified herein. Upon any such registration or transfer, a new warrant to purchase Common Stock, in substantially the form of this Warrant (any such new warrant, a "NEW WARRANT"), evidencing the portion of this Warrant so transferred shall be issued to the transferee and a New Warrant evidencing the remaining portion of this Warrant not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Warrant by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a holder of a Warrant. 4. EXERCISE AND DURATION. Subject to the provisions of Section 5, this Warrant shall be exercisable by the registered Holder at any time and from time to time on or after the 6th month anniversary of the date hereof to and including the Expiration Date. At 6:30 p.m., New York City time on the Expiration Date, the portion of this Warrant available for exercise and not exercised prior thereto shall be and become void and of no value. The Company may not call or redeem all or any portion of this Warrant without the prior written consent of the Holder. 5. DELIVERY OF WARRANT SHARES. (a) To effect conversions hereunder, the Holder shall not be required to physically surrender this Warrant unless the aggregate Warrant Shares represented by this Warrant is being exercised. Upon delivery of the Form of Election to Purchase to the Company (with the attached Warrant Shares Exercise Log) at its address for notice set forth in Section 13 and upon payment of the Exercise Price multiplied by the number of Warrant Shares that the Holder intends to purchase hereunder, the Company shall promptly (but in no event later than three Trading Days after the Date of Exercise (as defined herein)) issue and deliver to the Holder, a certificate for the Warrant Shares issuable upon such exercise free of restrictive legends unless otherwise required by the Purchase Agreement. The Company shall, upon request of the Holder and subsequent to the date on which a registration statement covering the resale of the Warrant Shares has been declared effective by the Securities and Exchange Commission, use its best efforts to deliver Warrant Shares hereunder electronically through the Depository Trust Corporation or another established clearing corporation performing similar functions, if available, provided, that, the Company may, but will not be required to change its transfer agent if its current transfer agent cannot deliver Warrant Shares electronically through the Depository Trust Corporation. A "DATE OF EXERCISE" means the date on which the Holder shall have delivered to the Company: (i) the Form of Election to Purchase attached hereto (with the Warrant Exercise Log attached to it), appropriately completed and duly signed and (ii) payment of the Exercise Price for the number of Warrant Shares so indicated by the Holder to be purchased (and for purposes of this clause (ii), the parties agree that the giving to the Company of the federal wire reference number in connection with wire transfers shall constitute the payment of the Exercise Price). -2-

(b) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), then the Holder will have the right to rescind such exercise. (c) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), and if after such third Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a "BUY-IN"), then the Company shall (1) pay in cash to the Holder the amount by which (x) the Holder's total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (A) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue by (B) the closing bid price of the Common Stock at the time of the obligation giving rise to such purchase obligation and (2) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with a market price on the date of exercise totaled $10,000, under clause (1) of the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In. (d) The Company's obligations to issue and deliver Warrant Shares in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such obligation of the Company to the Holder in connection with the issuance of Warrant Shares. Nothing herein shall limit a Holder's right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company's failure to timely deliver certificates representing shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof. -3-

6. CHARGES, TAXES AND EXPENSES. Issuance and delivery of certificates for shares of Common Stock upon exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax, withholding tax (unless required by law), transfer agent fee or other incidental tax or expense in respect of the issuance of such certificates, all of which taxes and expenses shall be paid by the Company; provided, however, that the Company shall not be required to pay any tax which may be payable in respect of any transfer involved in the registration of any certificates for Warrant Shares or Warrants in a name other than that of the Holder. The Holder shall be responsible for all income and other tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof. 7. REPLACEMENT OF WARRANT. If this Warrant is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation hereof, or in lieu of and substitution for this Warrant, a New Warrant, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. Applicants for a New Warrant under such circumstances shall also comply with such other reasonable regulations and procedures and pay such other reasonable third-party costs as the Company may prescribe. 8. RESERVATION OF WARRANT SHARES. The Company covenants that it will at all times reserve and keep available out of the aggregate of its authorized but unissued and otherwise unreserved Common Stock, solely for the purpose of enabling it to issue Warrant Shares upon exercise of this Warrant as herein provided, the number of Warrant Shares which are then issuable and deliverable upon the exercise of this entire Warrant. The Company covenants that all Warrant Shares so issuable and deliverable shall, upon issuance and the payment of the applicable Exercise Price in accordance with the terms hereof, be duly and validly authorized, issued and fully paid and nonassessable. 9. CERTAIN ADJUSTMENTS. The Exercise Price and number of Warrant Shares issuable upon exercise of this Warrant are subject to adjustment from time to time as set forth in this Section 9. (a) STOCK DIVIDENDS AND SPLITS. If the Company, at any time while this Warrant is outstanding, (i) pays a stock dividend on its Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into a larger number of shares, or (iii) combines outstanding shares of Common Stock into a smaller number of shares, then in each such case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock outstanding immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately after such event. (b) PRO RATA DISTRIBUTIONS. If the Company, at any time while this Warrant is outstanding, distributes to all holders of Common Stock (i) evidences of its indebtedness, (ii) any security (other than a distribution of Common Stock covered by the preceding paragraph), (iii) rights or warrants to subscribe for or purchase any security, or (iv) any other asset (in each case, "DISTRIBUTED PROPERTY"), then, at the request of any Holder delivered on the -4-

record date fixed for determination of stockholders entitled to receive such distribution, the Company will deliver to such Holder, within five Trading Days after such request (or, if later, on the effective date of such distribution), the Distributed Property that such Holder would have been entitled to receive in respect of the Warrant Shares for which such Holder's Warrant could have been exercised immediately prior to such record date. If such Distributed Property is not delivered to a Holder pursuant to the preceding sentence, then upon any exercise of the Warrant that occurs after such record date, such Holder shall be entitled to receive, in addition to the Warrant Shares otherwise issuable upon such exercise, the Distributed Property that such Holder would have been entitled to receive in respect of such number of Warrant Shares had the Holder been the record holder of such Warrant Shares immediately prior to such record date. (c) FUNDAMENTAL TRANSACTIONS. If, at any time while this Warrant is outstanding: (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then the Holder shall have the right thereafter to receive, upon exercise of this Warrant, the same amount and kind of securities, cash or property as it would have been entitled to receive upon the occurrence of such Fundamental Transaction if it had been, immediately prior to such Fundamental Transaction, the holder of the number of Warrant Shares then issuable upon exercise in full of this Warrant (the "ALTERNATE CONSIDERATION"). For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental Transaction. At the Holder's option and request, any successor to the Company or surviving entity in such Fundamental Transaction shall purchase the Warrant from the Holder for a purchase price, payable in cash within five Trading Days after such request (or, if later, on the effective date of the Fundamental Transaction), equal to the Black Scholes value of the remaining unexercised portion of this Warrant on the date of the request, provided, that the successor to the Company or surviving entity in such Fundamental Transaction shall be entitled, in lieu of paying the aforementioned purchase price, to issue to the Holder a new warrant substantially in the form of this Warrant and consistent with the foregoing provisions and omitting subsection 9(d) below and evidencing the Holder's right to purchase the Alternate Consideration for the aggregate Exercise Price upon exercise thereof. The terms of any agreement pursuant to which a Fundamental Transaction is effected shall include terms requiring any such successor or surviving entity to comply with the provisions of this paragraph (c) and insuring that the Warrant (or any such replacement security) will be similarly adjusted upon any subsequent transaction analogous to a Fundamental Transaction. -5-

(d) SUBSEQUENT EQUITY SALES. (i) If the Company or any subsidiary thereof, at any time during the period between the Original Issue Date and the 18th month anniversary of the Effective Date (provided that such period shall be extended by the number of days in which the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the selling stockholders thereunder for the resale of the shares of Common Stock registered thereunder), as applicable with respect to Common Stock Equivalents (as defined below), at any time while this Warrant is outstanding, shall issue shares of Common Stock or rights, warrants, options or other securities or debt that is convertible into or exchangeable for shares of Common Stock ("COMMON STOCK Equivalents") entitling any Person to acquire shares of Common Stock, at a price per share less than the Exercise Price (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Exercise Price, such issuance shall be deemed to have occurred for less than the Exercise Price), then, at the option of the Holder for such exercises as it shall indicate, the Exercise Price shall be adjusted to equal the conversion, exchange or purchase price for such Common Stock or Common Stock Equivalents (including any reset provisions thereof) at issue and which adjusted Exercise Price shall continue for as long as this Warrants remain outstanding. Such adjustment shall be made whenever such Common Stock or Common Stock Equivalents are issued. The Company shall notify the Holder in writing, no later than the Trading Day following the issuance of any Common Stock or Common Stock Equivalent subject to this section, indicating therein the applicable issuance price, or of applicable reset price, exchange price, conversion price and other pricing terms. (ii) If, at any time while this Warrant is outstanding, the Company or any Subsidiary issues Common Stock Equivalents at a price per share that floats or resets or otherwise varies or is subject to adjustment based on market prices of the Common Stock (a "FLOATING PRICE SECURITY"), then for purposes of applying the preceding paragraph in connection with any subsequent exercise, the Exercise Price will be determined separately on each Exercise Date and will be deemed to equal the lowest price per share at which any holder of such Floating Price Security is entitled to acquire shares of Common Stock on such Exercise Date (regardless of whether any such holder actually acquires any shares on such date). (iii) Notwithstanding the foregoing, no adjustment will be made under this Section 6(d)(iii) as a result of: (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) to the Purchase Agreement (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction (as defined in the Purchase Agreement) or (iv) the issuance of up to 2,900,000 shares of Common Stock (as adjusted for stock -6-

splits, reverse stock splits, combinations and other similar transactions) to any Approved Purchaser (as defined in the Purchase Agreement) pursuant to Registration Statement No. 333-71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the ZLP Purchase Agreement (or the transactions contemplated thereby). (iv) NUMBER OF WARRANT SHARES. Simultaneously with any adjustment to the Exercise Price pursuant to paragraphs (a) or (b) of this Section, the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment. (e) CALCULATIONS. All calculations under this SECTION 9 shall be made to the nearest cent or the nearest 1/100th of a share, as applicable. The number of shares of Common Stock outstanding at any given time shall not include shares owned or held by or for the account of the Company, and the disposition of any such shares shall be considered an issue or sale of Common Stock. (f) NOTICE OF ADJUSTMENTS. Upon the occurrence of each adjustment pursuant to this SECTION 9, the Company at its expense will promptly compute such adjustment in accordance with the terms of this Warrant and prepare a certificate setting forth such adjustment, including a statement of the adjusted Exercise Price and adjusted number or type of Warrant Shares or other securities issuable upon exercise of this Warrant (as applicable), describing the transactions giving rise to such adjustments and showing in detail the facts upon which such adjustment is based. Upon written request, the Company will promptly deliver a copy of each such certificate to the Holder and to the Company's Transfer Agent. (g) NOTICE OF CORPORATE EVENTS. If the Company (i) declares a dividend or any other distribution of cash, securities or other property in respect of its Common Stock, including without limitation any granting of rights or warrants to subscribe for or purchase any capital stock of the Company or any Subsidiary, (ii) authorizes or approves, enters into any agreement providing for or solicits stockholder approval for any Fundamental Transaction or (iii) authorizes the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder a notice describing the material terms and conditions of such transaction, at least 20 calendar days prior to the applicable record or effective date on which a Person would need to hold Common Stock in order to participate in or vote with respect to such transaction, and the Company will take all steps reasonably necessary in order to insure that the Holder is given the practical opportunity to exercise this Warrant prior to such time so as to participate in or vote with respect to such transaction; provided, however, that the failure to deliver such notice or any defect therein shall not affect the validity of the corporate action required to be described in such notice. 10. PAYMENT OF EXERCISE PRICE. The Holder shall pay the Exercise Price in one of the following manners: (a) CASH EXERCISE. The Holder may deliver immediately available funds; or -7-

(b) CASHLESS EXERCISE. At any time after the Effectiveness Date (as defined in the Registration Rights Agreement (as defined in the Purchase Agreement)), when such Registration Statement (as defined in the Registration Rights Agreement) covering the resale of the Warrant Shares and naming the Holder as a selling stockholder thereunder or the prospectus included therein is not then effective, the Holder may surrender this Warrant to the Company together with a notice of cashless exercise, in which event the Company shall issue to the Holder the number of Warrant Shares determined as follows: X = Y [(A-B)/A] where: X = the number of Warrant Shares to be issued to the Holder. Y = the number of Warrant Shares with respect to which this Warrant is being exercised. A = the average of the closing bid prices for the five Trading Days immediately prior to (but not including) the Exercise Date. B = the Exercise Price. For purposes of Rule 144 promulgated under the Securities Act, it is intended, understood and acknowledged that the Warrant Shares issued in a cashless exercise transaction shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the date this Warrant was originally issued pursuant to the Purchase Agreement. -8-

11. LIMITATIONS ON EXERCISE. (a) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 4.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. The provisions of this Section may be waived by a Holder (but only as to itself and not to any other Holder) upon not less than 61 days' prior notice to the Company. Other Holders shall be unaffected by any such waiver. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. (b) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 9.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. (c) If the Company has not obtained the Shareholder Approval (as defined below), then the Company may not issue in excess of 22,054,931 shares of Common Stock less: (A) any shares of Common Stock issued on the Closing Date pursuant to the Purchase Agreement and (B) any shares of Common Stock issued upon exercise of this Warrant and conversion of the Debentures and payment of interest thereon in shares of Common Stock, (C) any shares of Common Stock issued pursuant to the Adjustable Warrants (as defined in the Purchase Agreement) and the exercise of the Common Stock Warrants (as defined in the Purchase Agreement), (D) any shares of Common Stock issued pursuant to the ZLP -9-

Purchase Agreement (and the transactions contemplated thereby) and (E) any sales of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to an Approved Purchaser (as defined in the Purchase Agreement) subsequent to the date hereof pursuant to the Company's Registration Statement No. 333-71086 (such number of shares, as adjusted from time to time, the "ISSUABLE MAXIMUM"). The Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained by dividing (x) the number of shares of Common Stock issued and sold to the Holder on the Closing Date by (y) the number of shares of Common Stock issued and sold by the Company on the Closing Date. If the Holder shall no longer hold the Warrant due to exercise or cancellation of the Warrant, then the Holder's remaining portion of the Issuable Maximum shall be allocated pro-rata among the remaining Holders. If on any Date of Exercise: (A) the aggregate number of shares of Common Stock that would then be issuable upon exercise in full of this Warrant would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the vote of shareholders (the "SHAREHOLDER APPROVAL"), if any, as may be required by the applicable rules and regulations of the Nasdaq SmallCap Market (or any successor entity) applicable to approve the issuance of shares of Common Stock in excess of the Issuable Maximum pursuant to the terms hereof, then the Company shall issue to the Holder a number of shares of Common Stock equal to the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum, with respect to the remainder of the Warrant Shares then issuable under the Warrant for which an exercise in accordance with the applicable exercise price would result in an issuance of shares of Common Stock in excess of the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum (the "EXCESS WARRANT SHARES"), the Company shall use its best efforts to obtain the Shareholder Approval applicable to such issuance as soon as is possible, but in any event not later than the 90th day after such request. In connection therewith, the board of directors of the Company shall: (a) adopt proper resolutions authorizing such increase in such authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain the Shareholder Approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 90th day after the delivery of the proxy materials relating to such meeting). The Company and the Holder understand and agree that shares of Common Stock issued to and then held by the Holder as a result of exercise of this Warrant shall not be entitled to cast votes on any resolution to obtain Shareholder Approval pursuant hereto. If the Company shall have used its best efforts to obtain the Shareholder Approval but nevertheless failed to obtain such Shareholder Approval, then this Warrant shall be cancelled and of no further force and effect. 12. NO FRACTIONAL SHARES. No fractional shares of Warrant Shares will be issued in connection with any exercise of this Warrant. In lieu of any fractional shares which would, otherwise be issuable, the Company shall pay cash equal to the product of such fraction multiplied by the closing bid price of one Warrant Share as reported on the Nasdaq National Market on the date of exercise. 13. NOTICES. Any and all notices or other communications or deliveries hereunder (including without limitation any Exercise Notice) shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the next Trading Day after the date of -10-

transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section on a day that is not a Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The addresses for such communications shall be: (i) if to the Company, to Peregrine Pharmaceuticals, Inc., 14272 Franklin Avenue, Tustin, California 92780, Facsimile No.: (714) 838-5817, Attn: Chief Financial Officer, or (ii) if to the Holder, to the address or facsimile number appearing on the Warrant Register or such other address or facsimile number as the Holder may provide to the Company in accordance with this Section. 14. WARRANT AGENT. The Company shall serve as warrant agent under this Warrant. Upon 30 days' notice to the Holder, the Company may appoint a new warrant agent. Any corporation into which the Company or any new warrant agent may be merged or any corporation resulting from any consolidation to which the Company or any new warrant agent shall be a party or any corporation to which the Company or any new warrant agent transfers substantially all of its corporate trust or shareholders services business shall be a successor warrant agent under this Warrant without any further act. Any such successor warrant agent shall promptly cause notice of its succession as warrant agent to be mailed (by first class mail, postage prepaid) to the Holder at the Holder's last address as shown on the Warrant Register. 15. MISCELLANEOUS. (a) This Warrant shall be binding on and inure to the benefit of the parties hereto and their respective successors and assigns. Subject to the preceding sentence, nothing in this Warrant shall be construed to give to any Person other than the Company and the Holder any legal or equitable right, remedy or cause of action under this Warrant. This Warrant may be amended only in writing signed by the Company and the Holder and their successors and assigns. (b) All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Warrant (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of this Warrant), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Warrant and agrees that such service shall -11-

constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto (including its affiliates, agents, officers, directors and employees) hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Warrant or the transactions contemplated hereby. If either party shall commence an action or proceeding to enforce any provisions of this Warrant, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. (c) The headings herein are for convenience only, do not constitute a part of this Warrant and shall not be deemed to limit or affect any of the provisions hereof. (d) In case any one or more of the provisions of this Warrant shall be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Warrant shall not in any way be affected or impaired thereby and the parties will attempt in good faith to agree upon a valid and enforceable provision which shall be a commercially reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Warrant. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK, SIGNATURE PAGE FOLLOWS] -12-

IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed by its authorized officer as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: -------------------------------- Name: Paul Lytle Title: V.P. Finance & Accounting -13-

FORM OF ELECTION TO PURCHASE To Peregrine Pharmaceuticals, Inc.: In accordance with Warrant No. _______ issued to the undersigned, the undersigned hereby elects to purchase _____________ shares of common stock ("COMMON STOCK"), $.001 par value per share, of Peregrine Pharmaceuticals, Inc., and, if such Holder is not utilizing the cashless exercise provisions set forth in this Warrant, encloses herewith $________ in cash, certified or official bank check or checks, which sum represents the aggregate Exercise Price (as defined in the Warrant) for the number of shares of Common Stock to which this Form of Election to Purchase relates. By its delivery of this Form of Election To Purchase, the Holder represents and warrants to the Company that in giving effect to the exercise evidenced hereby the Holder will not beneficially own in excess of the number of shares of Common Stock (determined in accordance with Section 13(d) of the Securities Exchange Act of 1934) permitted to be owned under Section 11 of this Warrant to which this notice relates. The undersigned requests that certificates for the shares of Common Stock issuable upon this exercise be issued in the name of PLEASE INSERT SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER (Please print name and address)

WARRANT SHARES EXERCISE LOG --------------------------- - ---------------- ----------------- ----------------- ----------------- Date Number of Warrant Number of Warrant Number of Warrant Shares Available Shares Exercised Shares Remaining to be Exercised to be Exercised - ---------------- ----------------- ----------------- ----------------- - ---------------- ----------------- ----------------- -----------------

FORM OF ASSIGNMENT [To be completed and signed only upon transfer of Warrant] FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto ________________________________ the right represented by the within Warrant to purchase ____________ shares of Common Stock of Peregrine Pharmaceuticals, Inc., to which the within Warrant relates and appoints ________________ attorney to transfer said right on the books of Peregrine Pharmaceuticals, Inc., with full power of substitution in the premises. Dated: _______________, ____ _____________________________________________ (Signature must conform in all respects to name of holder as specified on the face of the Warrant) _____________________________________________ Address of Transferee _____________________________________________ _____________________________________________ In the presence of: _________________________

EXHIBIT 10.82 FORM OF ADJUSTMENT WARRANT UNDER SECURITIES PURCHASE AGREEMENT NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. PEREGRINE PHARMACEUTICALS, INC. WARRANT Warrant No. ADJ-[ ] Date of Original Issuance: August 9, 2002 Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), hereby certifies that, for value received, [investor name] or its registered assigns (the "HOLDER"), is entitled to purchase from the Company up to a number of shares of common stock, $.001 par value per share (the "COMMON STOCK"), of the Company (each such share, a "WARRANT SHARE" and all such shares, the "WARRANT SHARES"), determined pursuant to Section 4(a) hereof (as adjusted from time to time as provided in Section 9), at an exercise price (the "EXERCISE PRICE") per Warrant Share equal to the par value of the Common Stock of the Company, at any time and from time to time from and after the 6th month anniversary of the date hereof and through and including August 8, 2006 (the "EXPIRATION DATE"), and subject to the following terms and conditions: 1. DEFINITIONS. In addition to the terms defined elsewhere in this Warrant, capitalized terms that are not otherwise defined herein that are defined in the Securities Purchase Agreement, dated as of the date of original issuance of this Warrant, to which the Company and the original Holder are parties (the "PURCHASE AGREEMENT"), shall have the meanings given to such terms in the Purchase Agreement. 2. REGISTRATION OF WARRANT. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose (the "WARRANT

REGISTER"), in the name of the record Holder from time to time. The Company may treat the registered Holder as the absolute owner of this Warrant for all purposes, absent actual notice to the contrary. 3. REGISTRATION OF TRANSFERS. The Company shall register the transfer of any portion of this Warrant in the Warrant Register, upon surrender of this Warrant, with the Form of Assignment attached hereto duly completed and signed, to the Company at its address specified herein. Upon any such registration or transfer, a new warrant to purchase Common Stock, in substantially the form of this Warrant (any such new warrant, a "NEW Warrant"), evidencing the portion of this Warrant so transferred shall be issued to the transferee and a New Warrant evidencing the remaining portion of this Warrant not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Warrant by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a Holder. 4. EXERCISE AND DURATION. (a) The number of Warrant Shares subject to exercise pursuant to the terms hereof shall be equal determined in accordance with Section 4.6 of the Purchase Agreement and shall be set forth from time to time on the attached Warrant Shares Exercise Log). (b) Subject to the provisions of Section 4, this Warrant shall be exercisable by the registered Holder at any time and from time to time on or after the 6th month anniversary of the date hereof to and including the Expiration Date. At 6:30 p.m., New York City time on the Expiration Date, the portion of this Warrant available for exercise and not exercised prior thereto shall be and become void and of no value. The Company may not call or redeem all or any portion of this Warrant without the prior written consent of the Holder. 5. DELIVERY OF WARRANT SHARES. (a) To effect conversions hereunder, the Holder shall not be required to physically surrender this Warrant unless the aggregate Warrant Shares represented by this Warrant is being exercised. Upon delivery of the Form of Election to Purchase to the Company (with the attached Warrant Shares Exercise Log) at its address for notice set forth in Section 13 and upon payment of the Exercise Price multiplied by the number of Warrant Shares that the Holder intends to purchase hereunder, the Company shall promptly (but in no event later than three Trading Days after the Date of Exercise (as defined herein)) issue and deliver to the Holder, a certificate for the Warrant Shares issuable upon such exercise free of restrictive legends unless otherwise required by the Purchase Agreement. The Company shall, upon request of the Holder and subsequent to the date on which a registration statement covering the resale of the Warrant Shares has been declared effective by the Securities and Exchange Commission, use its best efforts to deliver Warrant Shares hereunder electronically through the Depository Trust Corporation or another established clearing corporation performing similar functions, if available, provided, that, the Company may, but will not be required to change its transfer agent if its current transfer agent cannot deliver Warrant Shares electronically through the Depository Trust Corporation. A "DATE OF EXERCISE" means the date on which the Holder shall have delivered to the Company: (i) the Form of Election to Purchase attached hereto -2-

(with the Warrant Exercise Log attached to it), appropriately completed and duly signed and (ii) payment of the Exercise Price for the number of Warrant Shares so indicated by the Holder to be purchased. (b) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), then the Holder will have the right to rescind such exercise. (c) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), and if after such third Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a "BUY-IN"), then the Company shall (1) pay in cash to the Holder the amount by which (x) the Holder's total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (A) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue by (B) the closing sales price of the Common Stock at the time of the obligation giving rise to such purchase obligation and (2) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with a market price on the date of exercise totaled $10,000, under clause (1) of the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In. (d) The Company's obligations to issue and deliver Warrant Shares in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such obligation of the Company to the Holder in connection with the issuance of Warrant Shares. Nothing herein shall limit a Holder's right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company's failure to timely deliver certificates representing shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof. 6. CHARGES, TAXES AND EXPENSES. Issuance and delivery of certificates for shares of Common Stock upon exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax, withholding tax (unless required by law), transfer agent fee or other incidental tax or expense in respect of the issuance of such certificates, all of which taxes and expenses shall be paid by the Company; provided, however, that the Company shall not be required to pay any tax which may be payable in respect of any transfer involved -3-

in the registration of any certificates for Warrant Shares or Warrants in a name other than that of the Holder. The Holder shall be responsible for all income and other tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof. 7. REPLACEMENT OF WARRANT. If this Warrant is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation hereof, or in lieu of and substitution for this Warrant, a New Warrant, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. Applicants for a New Warrant under such circumstances shall also comply with such other reasonable regulations and procedures and pay such other reasonable third-party costs as the Company may prescribe. 8. RESERVATION OF WARRANT SHARES. The Company covenants that it will at all times reserve and keep available out of the aggregate of its authorized but unissued and otherwise unreserved Common Stock, solely for the purpose of enabling it to issue Warrant Shares upon exercise of this Warrant as herein provided, the number of Warrant Shares which are then issuable and deliverable upon the exercise of this entire Warrant. The Company covenants that all Warrant Shares so issuable and deliverable shall, upon issuance and the payment of the applicable Exercise Price in accordance with the terms hereof, be duly and validly authorized, issued and fully paid and nonassessable. 9. CERTAIN ADJUSTMENTS. The number of Warrant Shares issuable upon exercise of this Warrant is subject to adjustment from time to time as set forth in this Section 9. (a) STOCK DIVIDENDS AND SPLITS. If the Company, at any time while this Warrant is outstanding, (i) pays a stock dividend on its Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into a larger number of shares, or (iii) combines outstanding shares of Common Stock into a smaller number of shares, then in each such case the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment. (b) CALCULATIONS. All calculations under this SECTION 9 shall be made to the nearest cent or the nearest 1/100th of a share, as applicable. The number of shares of Common Stock outstanding at any given time shall not include shares owned or held by or for the account of the Company, and the disposition of any such shares shall be considered an issue or sale of Common Stock. (c) NOTICE OF ADJUSTMENTS. Upon the occurrence of each adjustment pursuant to this SECTION 9, the Company at its expense will promptly compute such adjustment in accordance with the terms of this Warrant and prepare a certificate setting forth such adjustment, including a statement of the adjusted Exercise Price and adjusted number or type of Warrant Shares or other securities issuable upon exercise of this Warrant (as applicable), describing the transactions giving rise to such adjustments and showing in detail the facts upon which such adjustment is based. Upon written request, the Company will promptly deliver a copy of each such certificate to the Holder and to the Company's Transfer Agent. -4-

(d) NOTICE OF CORPORATE EVENTS. If the Company (i) declares a dividend or any other distribution of cash, securities or other property in respect of its Common Stock, including without limitation any granting of rights or warrants to subscribe for or purchase any capital stock of the Company or any Subsidiary or (ii) authorizes the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder a notice describing the material terms and conditions of such transaction, at least 20 calendar days prior to the applicable record or effective date on which a Person would need to hold Common Stock in order to participate in or vote with respect to such transaction, and the Company will take all steps reasonably necessary in order to insure that the Holder is given the practical opportunity to exercise this Warrant prior to such time so as to participate in or vote with respect to such transaction; provided, however, that the failure to deliver such notice or any defect therein shall not affect the validity of the corporate action required to be described in such notice. (e) FUNDAMENTAL TRANSACTION. If, at any time while this Warrant is outstanding: (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then the Holder shall have the right thereafter to receive, upon exercise of this Warrant, the same amount and kind of securities, cash or property as it would have been entitled to receive upon the occurrence of such Fundamental Transaction if it had been, immediately prior to such Fundamental Transaction, the holder of the number of Warrant Shares then issuable upon exercise in full of this Warrant (the "ALTERNATE CONSIDERATION"). For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental Transaction. 10. PAYMENT OF EXERCISE PRICE. The Holder shall pay the Exercise Price by surrendering this Warrant to the Company together with a notice of cashless exercise, in which event the Company shall issue to the Holder the number of Warrant Shares determined as follows X = Y [(A-B)/A] where: -5-

X = the number of Warrant Shares to be issued to the Holder. Y = the number of Warrant Shares with respect to which this Warrant is being exercised. A = the average of the closing bid prices for the five Trading Days immediately prior to (but not including) the Exercise Date. B = the Exercise Price. For purposes of Rule 144 promulgated under the Securities Act, it is intended, understood and acknowledged that the Warrant Shares issued in a cashless exercise transaction shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the date this Warrant was originally issued pursuant to the Purchase Agreement. 11. LIMITATIONS ON EXERCISE. (a) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 4.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. The provisions of this Section may be waived by a Holder (but only as to itself and not to any other Holder) upon not less than 61 days' prior notice to the Company. Other Holders shall be unaffected by any such waiver. (b) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 9.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. -6-

(c) If the Company has not obtained the Shareholder Approval (as defined below), then the Company may not issue in excess of 22,054,931 shares of Common Stock less: (A) any shares of Common Stock issued on the Closing Date pursuant to the Purchase Agreement and (B) any shares of Common Stock issued upon exercise of this Warrant and conversion of the Debentures and payment of interest thereon in shares of Common Stock, (C) any shares of Common Stock issued pursuant to the Warrants (as defined in the Purchase Agreement), (D) any shares of Common Stock issued pursuant to the ZLP Purchase Agreement (and the transactions contemplated thereby) and (E) any sales of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to an Approved Purchaser (as defined in the Purchase Agreement) subsequent to the date hereof pursuant to the Company's Registration Statement No. 333-71086 (such number of shares, as adjusted from time to time, the "ISSUABLE MAXIMUM"). The Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained by dividing (x) the number of shares of Common Stock issued and sold to the Holder on the Closing Date by (y) the number of shares of Common Stock issued and sold by the Company on the Closing Date. If the Holder shall no longer hold the Warrant due to exercise or cancellation of the Warrant, then the Holder's remaining portion of the Issuable Maximum shall be allocated pro-rata among the remaining Holders. If on any Date of Exercise: (A) the aggregate number of shares of Common Stock that would then be issuable upon exercise in full of this Warrant would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the vote of shareholders (the "SHAREHOLDER APPROVAL"), if any, as may be required by the applicable rules and regulations of the Nasdaq SmallCap Market (or any successor entity) applicable to approve the issuance of shares of Common Stock in excess of the Issuable Maximum pursuant to the terms hereof, then the Company shall issue to the Holder a number of shares of Common Stock equal to the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum, with respect to the remainder of the Warrant Shares then issuable under the Warrant for which an exercise in accordance with the applicable exercise price would result in an issuance of shares of Common Stock in excess of the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum (the "EXCESS WARRANT SHARES"), the Company shall use its best efforts to obtain the Shareholder Approval applicable to such issuance as soon as is possible, but in any event not later than the 90th day after such request. In connection therewith, the board of directors of the Company shall: (a) adopt proper resolutions authorizing such increase in such authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain the Shareholder Approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 90th day after the delivery of the proxy materials relating to such meeting). The Company and the Holder understand and agree that shares of Common Stock issued to and then held by the Holder as a result of exercise of this Warrant shall not be entitled to cast votes on any resolution to obtain Shareholder Approval pursuant hereto. If the Company shall have used its best efforts to obtain the Shareholder Approval but nevertheless failed to obtain such Shareholder Approval, then this Warrant shall be cancelled and of no further force and effect. (d) The provisions set forth in this Section 11 shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that -7-

such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. 12. NO FRACTIONAL SHARES. No fractional shares of Warrant Shares will be issued in connection with any exercise of this Warrant. In lieu of any fractional shares which would, otherwise be issuable, the Company shall pay cash equal to the product of such fraction multiplied by the closing bid price of one Warrant Share as reported on the Nasdaq SmallCap Market on the date of exercise. 13. NOTICES. Any and all notices or other communications or deliveries hereunder (including without limitation any Exercise Notice) shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the next Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section on a day that is not a Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The addresses for such communications shall be: (i) if to the Company, to Peregrine Pharmaceuticals, Inc., 14272 Franklin Avenue, Tustin, California 92780, Facsimile No.: (714) 838-9433, Attn: Chief Financial Officer, or (ii) if to the Holder, to the address or facsimile number appearing on the Warrant Register or such other address or facsimile number as the Holder may provide to the Company in accordance with this Section. 14. WARRANT AGENT. The Company shall serve as warrant agent under this Warrant. Upon 30 days' notice to the Holder, the Company may appoint a new warrant agent. Any corporation into which the Company or any new warrant agent may be merged or any corporation resulting from any consolidation to which the Company or any new warrant agent shall be a party or any corporation to which the Company or any new warrant agent transfers substantially all of its corporate trust or shareholders services business shall be a successor warrant agent under this Warrant without any further act. Any such successor warrant agent shall promptly cause notice of its succession as warrant agent to be mailed (by first class mail, postage prepaid) to the Holder at the Holder's last address as shown on the Warrant Register. 15. MISCELLANEOUS. (a) This Warrant shall be binding on and inure to the benefit of the parties hereto and their respective successors and assigns. Subject to the preceding sentence, nothing in this Warrant shall be construed to give to any Person other than the Company and the Holder any legal or equitable right, remedy or cause of action under this Warrant. This Warrant may be amended only in writing signed by the Company and the Holder and their successors and assigns. (b) All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement -8-

and defense of the transactions contemplated by this Warrant (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of this Warrant), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Warrant and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto (including its affiliates, agents, officers, directors and employees) hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Warrant or the transactions contemplated hereby. If either party shall commence an action or proceeding to enforce any provisions of this Warrant, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. (c) The headings herein are for convenience only, do not constitute a part of this Warrant and shall not be deemed to limit or affect any of the provisions hereof. (d) In case any one or more of the provisions of this Warrant shall be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Warrant shall not in any way be affected or impaired thereby and the parties will attempt in good faith to agree upon a valid and enforceable provision which shall be a commercially reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Warrant. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK, SIGNATURE PAGE FOLLOWS] -9-

IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed by its authorized officer as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: -------------------------------- Name: Paul Lytle Title: V.P. Finance & Accounting -10-

FORM OF ELECTION TO PURCHASE To Peregrine Pharmaceuticals, Inc.: In accordance with Warrant No. [________] issued to the undersigned, the undersigned hereby elects to purchase _____________ shares of common stock ("COMMON STOCK"), $.001 par value per share, of Peregrine Pharmaceuticals, Inc., by means of the cashless exercise provision set forth in this Warrant. By its delivery of this Form of Election To Purchase, the Holder represents and warrants to the Company that in giving effect to the exercise evidenced hereby the Holder will not beneficially own in excess of the number of shares of Common Stock (determined in accordance with Section 13(d) of the Securities Exchange Act of 1934) permitted to be owned under Section 11 of this Warrant to which this notice relates. The undersigned requests that certificates for the shares of Common Stock issuable upon this exercise be issued in the name of PLEASE INSERT SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER (Please print name and address)

WARRANT SHARES EXERCISE LOG - ---------------- ----------------- ----------------- ----------------- Date Number of Warrant Number of Warrant Number of Warrant Shares Available Shares Exercised Shares Remaining to be Exercised to be Exercised - ---------------- ----------------- ----------------- ----------------- - ---------------- ----------------- ----------------- -----------------

FORM OF ASSIGNMENT [To be completed and signed only upon transfer of Warrant] FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto ________________________________ the right represented by the within Warrant to purchase ____________ shares of Common Stock of Peregrine Pharmaceuticals, Inc., to which the within Warrant relates and appoints ________________ attorney to transfer said right on the books of Peregrine Pharmaceuticals, Inc., with full power of substitution in the premises. Dated: _______________, ____ _____________________________________________ (Signature must conform in all respects to name of holder as specified on the face of the Warrant) _____________________________________________ Address of Transferee _____________________________________________ _____________________________________________ In the presence of: _________________________

EXHIBIT 10.83 EXECUTED ZLP SECURITIES PURCHASE AGREEMENT SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement dated as of August 9, 2002 (this "AGREEMENT"), by and among Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), and the purchasers identified on the signature pages hereto (each, including its respective successors and assigns, a "PURCHASER" and collectively, the "PURCHASERS"). WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to Section 4(2) of the Securities Act of 1933, as amended (the "SECURITIES ACT"), and Rule 506 promulgated thereunder, the Company desires to issue and sell to the Purchasers, and the Purchasers, severally and not jointly, desire to purchase from the Company, certain securities of the Company, as more fully described in this Agreement. NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and the Purchasers agree as follows: ARTICLE I. DEFINITIONS 1.1. DEFINITIONS. In addition to the terms defined elsewhere in this Agreement, the following terms shall have the meanings set forth in this Section 1.1: "ADJUSTMENT WARRANT" means a common stock purchase warrant in the form attached hereto as EXHIBIT G. "AFFILIATE" means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common control with a Person, as such terms are used in and construed under Rule 144. "BUSINESS DAY" means any day except Saturday, Sunday and any day which shall be a federal legal holiday or a day on which banking institutions in the State of New York are authorized or required by law or other governmental action to close. "CLOSING" means the closing of the purchase and sale of the Shares and the Warrants, as contemplated by Section 2.1. "CLOSING DATE" means the date of the Closing. "COMMISSION" means the Securities and Exchange Commission. "COMMON STOCK" means the common stock of the Company, $.001 par value per share, and any securities into which such common stock may hereafter be reclassified. "COMMON STOCK EQUIVALENTS" means any securities of the Company or any Subsidiary which entitle the holder thereof to acquire Common Stock at any time, including without limitation, any debt, preferred stock, rights, options,

warrants or other instrument that is at any time convertible into or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock or other securities that entitle the holder to receive, directly or indirectly, Common Stock. "COMMON STOCK INVESTMENT AMOUNT" means, with respect to the purchase of the Common Stock by a Purchaser, the amount indicated below such Purchaser's name on such Purchaser's signature page of this Agreement. "COMMON SHARES" means the shares of Common Stock issuable to the Purchasers at the Closing. "COMPANY OUTSIDE COUNSEL" means Jeffers, Shaff & Falk, LLP. "CONCURRENT PURCHASE AGREEMENT" means the Securities Purchase Agreement, dated as of August 9, 2002, between the Company and the purchasers signatory thereto, as amended, modified or supplemented from time to time in accordance with its terms, pursuant to which such purchasers will purchase from the Company common stock purchase convertible debentures, shares of Common Stock and common stock purchase warrants similar to the Warrants and the Adjustment Warrants, and have the right to require the Company to register the Common Stock so purchased and shares of common stock issuable upon conversion of all the common stock purchase convertible debentures and exercise of all common stock purchase warrants pursuant to a registration rights agreement similar to the Registration Rights Agreement. "EFFECTIVE DATE" means the date that a Registration Statement is first declared effective by the Commission. "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended. "INDEBTEDNESs" shall mean the principal amount of, premium, if any, profit participation, if any, and accrued and unpaid interest on and all other amounts and costs payable in respect of (a) indebtedness for money borrowed from others; (b) indebtedness guaranteed, directly or indirectly, in any manner, or in effect guaranteed, directly or indirectly, in any manner through an agreement, contingent or otherwise, to supply funds to, or in any other manner invest in the debtor, or to purchase indebtedness, or to purchase and pay for property if not delivered or pay for services if not performed, primarily for the purpose of enabling the debtor to make payment of the indebtedness or to assure the owners of the indebtedness against loss; (c) all indebtedness secured by any mortgage, lien, pledge, charge or other encumbrance upon property owned by the Company; (d) all indebtedness of such Person created or arising under any conditional sale, lease (intended primarily as a financing device) or other title retention or security agreement with respect to property acquired by the Company even though the rights and remedies of the seller, lessor or lender under such agreement or lease in the event of a default may be limited to repossession or sale of such property; and (e) renewals, extensions and refundings of any such indebtedness. "LOCK-UP LETTER" means the lock-up letter, in the form attached hereto as EXHIBIT E, to be executed by each of Edward Legere, Eric Swartz and Clive Taylor. 2

"PER SHARE PURCHASE PRICE" equals $0.65. "PERSON" means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind. "PROCEEDING" means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial proceeding, such as a deposition), whether commenced or threatened. "PURCHASER PERCENTAGE" means, with respect to a Purchaser, the percentage equal to the product of (x) a fraction, the numerator of which shall be the sum of the Common Stock Investment Amount paid or payable by such Purchaser on the Closing Date, and the denominator of which shall be the sum of the aggregate amount of Common Stock Investment Amount paid or payable by all Purchasers on the Closing Date times (y) 100. "REGISTRATION STATEMENT" means one or more registration statements meeting the requirements set forth in the Registration Rights Agreement and covering the resale of the Common Shares and the Warrant Shares by the Purchasers. "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights Agreement, dated as of the date of this Agreement, by and among the Company and the Purchasers, in the form of EXHIBIT B attached hereto. "RULE 144" means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same effect as such Rule. "SECURITIES" means the Common Shares, the Warrants, the Adjustment Warrant and the Warrant Shares. "SHARES" means the Common Shares issuable to the Purchasers on the Closing Date. "SUBSIDIARY" means any subsidiary of the Company that is required to be listed in SCHEDULE 3.1(A). "STRATEGIC TRANSACTION" means a transaction or relationship in which the Company issues shares of Common Stock to a Person which is, itself or through its subsidiaries, an operating company in a business synergistic with the business of the Company, whose business consists primarily of manufacturing, research, developing, or selling pharmaceutical products and in which the Company receives material benefits in addition to the investment of funds (such Person, a "STRATEGIC COMPANY"), but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital or to a Person whose primary business is investing in securities. The parties agree that the issuance by the Company of Common Stock in connection with the Company's licensing of technology to or from a Strategic Company if (i) such arrangement is approved by the board of directors of the Company, (ii) such transaction is a bona fide, arms-length transaction to a third party unaffiliated with the Company or any of its Affiliates, (iii) the Common Stock 3

at issue may not be registered for resale until 60 Trading Days following the Effective Date (plus such number of Trading Days during such period when the Registration Statement may not be used by the Purchasers for the resale of the Common Shares), (iv) such Strategic Company is not in the primary business of investing in securities, (v) and such Strategic Company purchases the Common Stock, for cash, at a price equal to or greater than the average of the Closing Prices of the Common Stock for the five Trading Days immediately preceding the closing date of the issuance of the Common Stock shall be deemed a Strategic Transaction. "TRADING DAY" means (i) a day on which the Common Stock is traded on a Trading Market, or (ii) if the Common Stock is not listed on a Trading Market, a day on which the Common Stock is traded in the over the counter market, as reported by the OTC Bulletin Board, or (iii) if the Common Stock is not quoted on the OTC Bulletin Board, a day on which the Common Stock is quoted in the over the counter market as reported by the National Quotation Bureau Incorporated (or any similar organization or agency succeeding its functions of reporting prices); provided, that in the event that the Common Stock is not listed or quoted as set forth in (i), (ii) and (iii) hereof, then Trading Day shall mean a Business Day. "TRADING MARKET" means whichever of the Nasdaq SmallCap Market, Nasdaq National Market, American Stock Exchange or New York Stock Exchange on which the Common Stock is then listed or quoted. "TRANSFER AGENT INSTRUCTIONS" means the company's transfer agent instructions in the form of EXHIBIT D. "TRANSACTION DOCUMENTS" means this Agreement, the Registration Rights Agreement, the Warrants, the Adjustment Warrants, the Transfer Agent Instructions, the Voting Rights Letter, the Lock-Up Letter and any other documents or agreements executed in connection with the transactions contemplated hereunder. "VOTING RIGHTS LETTER" means the voting rights letter, from Edward Legere, addressed to the Purchasers, in the form attached hereto as EXHIBIT F. "WARRANTS" means, collectively, the Common Stock purchase warrants issuable to each Purchaser at the Closing, in the form attached hereto as EXHIBIT C. "WARRANT SHARES" means the shares of Common Stock issuable upon exercise of the Warrants and the Adjustment Warrants. ARTICLE II. PURCHASE AND SALE 2.1. CLOSING. Subject to the terms and conditions set forth in this Agreement the Company shall issue and sell to the Purchasers and the Purchasers shall, severally and not jointly, purchase from the Company the Common Shares and the Warrants. The closing of the purchase and the sale of the Common Shares and the Warrants shall take place at the offices of Bryan Cave LLP, 1290 Avenue of the Americas, New York, New York 10104, on the first Trading Day immediately following the date that the conditions set forth in Section 2.4 have been 4

satisfied or waived by the appropriate party or at such other location or such later date as the parties shall agree. 2.2. DELIVERIES. On the date that this Agreement is executed, (a) the Company shall deliver or cause to be delivered to each Purchaser (i) this Agreement and the Registration Rights Agreement, (ii) the Transfer Agent Instructions, signed by the Company's transfer agent and counter-signed by the Company; (iii) each of the Lock-Up Letters; and (iv) the Voting Rights Letter; and (b) each Purchaser shall deliver to the Company this Agreement and a Registration Rights Agreement, each duly executed by such Purchaser. 2.3. CLOSING DELIVERIES. (a) At the Closing, the Company shall deliver or cause to be delivered to each Purchaser the following: (i) a stock certificate, containing the legend set forth in Section 4.1(b), registered in the name of such Purchaser, evidencing the number of Common Shares equal to such Purchaser's Common Stock Investment Amount divided by the Per Share Purchase Price; (ii) a Warrant, registered in the name of such Purchaser, pursuant to which such Purchaser shall have the right to acquire the 4,648,846 Warrant Shares; (iii) An Adjustment Warrant, registered in the name of such Purchaser who acquired Common Shares pursuant to Section 2.3(a)(i), pursuant to which such Purchaser shall have the right to acquire the number of Adjustment Shares as set forth in Section 4.6 hereof; and (iv) legal opinion of Company Outside Counsel, in agreed form, addressed to the Purchasers; (b) At the Closing, each Purchaser shall deliver or cause to be delivered to the Company, in United States dollars in immediately available funds by wire transfer to an account designated in writing by the Company for such purpose, an amount equal to the sum of such Purchaser's Common Stock Investment Amount. 2.4. CONDITIONS TO CLOSING. The obligation of a Purchaser to perform at the Closing is subject to satisfaction or waiver by such Purchaser of each of the following conditions: (a) REPRESENTATIONS AND WARRANTIES. The representations and warranties of the Company in this Agreement shall be true and correct as of the date when made and as of the Closing Date as though first made at that time (except for representations and warranties that speak of a specific date, which need only be true and correct as of such date). (b) PERFORMANCE BY THE COMPANY. The Company shall have performed, satisfied and complied in all material respects with all covenants and agreements required by the Transaction Documents to be performed, satisfied or complied with by the Company at or prior to the Closing Date. 5

(c) DELIVERY OF CLOSING ITEMS. The Company shall have delivered to the Purchasers the items required to be delivered pursuant to Section 2.3(a). (d) NO SUSPENSION OF TRADING IN OR DELISTING OF COMMON STOCK. The Common Stock shall be authorized for trading or quotation on the Trading Market and trading in the Common Stock shall not have been suspended by the Commission or the Trading Market at any time from the date of execution of this Agreement through the Closing Date. The Company shall not have received any notice from the Trading Market threatening to delist the Common Stock from the Trading Market. (e) ANNUAL REPORT ON FORM 10-K. The Company shall have filed its Annual Report on Form 10-K for the fiscal year ended April 30, 2002 (the "FORM 10-K") on a timely basis (as determined under the General Instructions I.A. 3(b) of Form S-3 promulgated under the Securities Act and Rule 12(b)-25(b) under the Exchange Act). (f) AUDITOR'S REPORT. The report of the Company's auditors prepared in accordance with Rule 2-02 of Regulation S-X, contained in the financial statements included in the Form 10-K shall not contain a "going concern" or similar opinion. (g) COMPLIANCE CERTIFICATE. The Company shall have delivered to or as directed by the Purchasers, an Officer's Certificate signed by the Company's Chief Executive Officer, dated as of Closing Date, certifying that the Company has satisfied the conditions set forth in Sections 2.4(a)-(f). ARTICLE III. REPRESENTATIONS AND WARRANTIES 3.1. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company hereby makes the following representations and warranties to each Purchaser: (a) SUBSIDIARIES. The Company has no direct or indirect subsidiaries other than those listed in SCHEDULE 3.1(A). Except as disclosed in SCHEDULE 3.1(A), the Company owns, directly or indirectly, all of the capital stock of each Subsidiary free and clear of any lien, charge, security interest, encumbrance, right of first refusal or other restriction (collectively, "LIENS"), and all the issued and outstanding shares of capital stock of each Subsidiary are validly issued and are fully paid, non-assessable and free of preemptive and similar rights. (b) ORGANIZATION AND QUALIFICATION. Each of the Company and each Subsidiary is an entity duly incorporated or otherwise organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization (as applicable), with the requisite power and authority to own and use its properties and assets and to carry on its business as currently conducted. Neither the Company nor any Subsidiary is in violation of any of the provisions of its respective certificate or articles of incorporation, bylaws or other organizational or charter documents. Each of the Company and each Subsidiary is duly qualified to conduct business and is in good standing as a foreign corporation or other entity in each jurisdiction in which the nature of the business conducted or property owned by it makes such qualification necessary, except where the failure to be so qualified or in good 6

standing, as the case may be, could not, individually or in the aggregate have or reasonably be expected to result in: (i) an adverse effect on the legality, validity or enforceability of any Transaction Document, (ii) a material adverse effect on the results of operations, assets, prospects, business or condition (financial or otherwise) of the Company and the Subsidiaries, taken as a whole, or (iii) an adverse impairment to the Company's ability to perform on a timely basis its obligations under any Transaction Document (any of (i), (ii) or (iii), a "MATERIAL ADVERSE EFFECT"). (c) AUTHORIZATION; ENFORCEMENT. The Company has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by each of the Transaction Documents and otherwise to carry out its obligations thereunder. The execution and delivery of each of the Transaction Documents by the Company and the consummation by it of the transactions contemplated thereby have been duly authorized by all necessary corporate action on the part of the Company and no further action is required by the Company in connection therewith. Each Transaction Document has been (or upon delivery have been) duly executed by the Company and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Company enforceable against the Company in accordance with its terms. (d) NO CONFLICTS. The execution, delivery and performance of the Transaction Documents by the Company and the consummation by the Company of the transactions contemplated thereby do not and will not: (i) conflict with or violate any provision of the Company's or any Subsidiary's certificate or articles of incorporation, bylaws or other organizational or charter documents, or (ii) conflict with, or constitute a default (or an event that with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation (with or without notice, lapse of time or both) of, any agreement, credit facility, debt or other instrument (evidencing a Company or Subsidiary debt or otherwise) or other understanding to which the Company or any Subsidiary is a party or by which any property or asset of the Company or any Subsidiary is bound or affected, or (iii) result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental authority to which the Company or a Subsidiary is subject (including federal and state securities laws and regulations), or by which any property or asset of the Company or a Subsidiary is bound or affected; except in the case of each of clauses (ii) and (iii), such as could not, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect. (e) FILINGS, CONSENTS AND APPROVALS. Neither the Company nor any Subsidiary is required to obtain any consent, waiver, authorization or order of, give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority or other Person in connection with the execution, delivery and performance by the Company of the Transaction Documents, other than: (i) the filing of the Form D with the Commission and any applicable blue sky filings; (ii) the filing with the Commission of one or more Registration Statements and (iii) the application with the Trading Market for the listing of the Common Shares and Warrant Shares for trading thereon in the time and manner required thereby (collectively, the "REQUIRED APPROVALS"). (f) ISSUANCE OF THE SECURITIES. The Securities are duly authorized and, when issued and paid for in accordance with the Transaction Documents, will be duly and validly issued, fully paid and non-assessable, free and clear of all 7

Liens. The Company has reserved from its duly authorized capital stock the maximum number of shares of Common Stock issuable pursuant to this Agreement, the Warrants and the Adjustment Warrants in order to issue the full number of Warrant Shares as are or may become issuable in accordance with the terms of the Warrants and the Adjustment Warrants, ignoring any limits on the number of shares of Common Stock that may be owned by the Purchasers at any one time and assuming that the exercise price of the Warrants at all times on and after the date of determination equals 100% of the actual exercise price on the Trading Day immediately prior to the date of determination). (g) CAPITALIZATION. The number of shares and type of all authorized, issued and outstanding capital stock of the Company is set forth in SCHEDULE 3.1(G). No securities of the Company are entitled to preemptive or similar rights, and no Person has any right of first refusal, preemptive right, right of participation, or any similar right to participate in the transactions contemplated by the Transaction Documents. Except as a result of the purchase and sale of the Securities and the securities being purchased pursuant to the Concurrent Purchase Agreement and the transaction contemplated thereby and except as disclosed in SCHEDULE 3.1(G), there are no outstanding options, warrants, scrip rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities, rights or obligations convertible into or exchangeable for, or giving any Person any right to subscribe for or acquire, any shares of Common Stock, or contracts, commitments, understandings or arrangements by which the Company or any Subsidiary is or may become bound to issue additional shares of Common Stock, or securities or rights convertible or exchangeable into shares of Common Stock. The issuance and sale of the Securities will not obligate the Company to issue shares of Common Stock or other securities to any Person (other than the Purchasers) and will not result in a right of any holder of Company securities to adjust the exercise, conversion, exchange or reset price under such securities. (h) SEC REPORTS; FINANCIAL STATEMENTS. The Company has filed all reports required to be filed by it under the Securities Act and the Exchange Act, including pursuant to Section 13(a) or 15(d) thereof, for the two years preceding the date hereof (or such shorter period as the Company was required by law to file such reports) (the foregoing materials being collectively referred to herein as the "SEC REPORTS" and, together with the Schedules to this Agreement, the "DISCLOSURE MATERIALS") on a timely basis or has received a valid extension of such time of filing and has filed any such SEC Reports prior to the expiration of any such extension. As of their respective dates, the SEC Reports complied in all material respects with the requirements of the Securities Act and the Exchange Act and the rules and regulations of the Commission promulgated thereunder, and none of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. The financial statements of the Company included in the SEC Reports comply in all material respects with applicable accounting requirements and the rules and regulations of the Commission with respect thereto as in effect at the time of filing. Such financial statements have been prepared in accordance with generally accepted accounting principles applied on a consistent basis during the periods involved ("GAAP"), except as may be otherwise specified in such financial statements or the notes thereto, and fairly present in all material respects the financial position of the Company and its consolidated subsidiaries as of and for the dates thereof and the results of operations and cash flows for the periods then ended, subject, in the case of unaudited statements, to normal, immaterial, year-end audit adjustments. 8

(i) MATERIAL CHANGES. Since the date of the latest audited financials included within the SEC Reports (except as disclosed in the SEC Reports) and except as contemplated by the Concurrent Purchase Agreement: (i) there has been no event, occurrence or development relating to the Company or its Subsidiaries that has had or could reasonably be expected to result in a Material Adverse Effect, (ii) the Company has not incurred any liabilities (contingent or otherwise) other than: (A) trade payables and accrued expenses incurred in the ordinary course of business consistent with past practice and (B) liabilities not required to be reflected in the Company's financial statements pursuant to GAAP or required to be disclosed in filings made with the Commission, (iii) the Company has not altered its method of accounting or the identity of its auditors, (iv) the Company has not declared or made any dividend or distribution of cash or other property to its stockholders or purchased, redeemed or made any agreements to purchase or redeem any shares of its capital stock and (v) the Company has not issued any equity securities to any officer, director or Affiliate, except pursuant to existing Company stock option plans. The Company does not have pending before the Commission any request for confidential treatment of information. (j) LITIGATION. There is no action, suit, inquiry, notice of violation, proceeding or investigation pending or, to the knowledge of the Company, threatened against or affecting the Company, any Subsidiary or any of their respective properties before or by any court, arbitrator, governmental or administrative agency or regulatory authority (federal, state, county, local or foreign) (collectively, an "ACTION") which: (i) adversely affects or challenges the legality, validity or enforceability of any of the Transaction Documents or the Securities or (ii) could, if there were an unfavorable decision, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect. Neither the Company nor any Subsidiary, nor any officer thereof, is or has been, nor any director thereof is or has been for the last three years, the subject of any Action involving a claim of violation of or liability under federal or state securities laws or a claim of breach of fiduciary duty. There has not been, and, to the knowledge of the Company, there is not pending or contemplated, any investigation by the Commission involving the Company or any current or former director that was a director of the Company at any time during the last three years or officer of the Company. The Commission has not issued any stop order or other order suspending the effectiveness of any registration statement filed by the Company or any Subsidiary under the Exchange Act or the Securities Act. (k) LABOR RELATIONS. No material labor dispute exists or, to the knowledge of the Company, is imminent with respect to any of the employees of the Company. (l) COMPLIANCE. Neither the Company nor any Subsidiary: (i) is in default under or in violation of (and no event has occurred that has not been waived that, with notice or lapse of time or both, has had or could reasonably be expected to result in a default by the Company or any Subsidiary under), nor has the Company or any Subsidiary received notice of a claim that it is in default under or that it is in violation of, any indenture, loan or credit agreement or any other agreement or instrument to which it is a party or by which it or any of its properties is bound (whether or not such default or violation has been waived), (ii) is in violation of any order of any court, arbitrator or governmental body, or (iii) is or has been in violation of any statute, rule or regulation of any governmental authority, including without limitation all foreign, federal, state and local laws relating to taxes, environmental protection, occupational health and safety, product quality and safety and employment and labor matters, except in each case as could not, 9

individually or in the aggregate, has had or could reasonably be expected to result in a Material Adverse Effect. (m) REGULATORY PERMITS. The Company and the Subsidiaries possess all certificates, authorizations and permits issued by the appropriate federal, state, local or foreign regulatory authorities necessary to conduct their respective businesses as described in the SEC Reports, except where the failure to possess such permits would not, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect ("MATERIAL PERMITS"), and neither the Company nor any Subsidiary has received any notice of proceedings relating to the revocation or modification of any Material Permit. (n) TITLE TO ASSETS. Except as contemplated by the Concurrent Purchase Agreement, the Company and the Subsidiaries have good and marketable title in fee simple to all real property owned by them that is material to their respective businesses and good and marketable title in all personal property owned by them that is material to their respective businesses, in each case free and clear of all Liens, except as set forth in SCHEDULE 3.1(N) and except for Liens as do not materially affect the value of such property and do not materially interfere with the use made and proposed to be made of such property by the Company and the Subsidiaries. Any real property and facilities held under lease by the Company and the Subsidiaries are held by them under valid, subsisting and enforceable leases of which the Company and the Subsidiaries are in compliance. (o) PATENTS AND TRADEMARKS. The Company and the Subsidiaries have, or have rights to use, all patents, patent applications, trademarks, trademark applications, service marks, trade names, copyrights, licenses and other similar rights that are necessary and material for use in connection with their respective businesses as described in the SEC Reports and which the failure to so could have, or reasonably be expected to result in, a Material Adverse Effect (collectively, the "INTELLECTUAL PROPERTY RIGHTS"). Except as set forth on Schedule 3.1(o), neither the Company nor any Subsidiary has received a written notice that the Intellectual Property Rights used by the Company or any Subsidiary violates or infringes upon the rights of any Person which if determined adversely to the Company would, individually or in the aggregate have or could reasonably be expected to result in a Material Adverse Effect. To the knowledge of the Company, (i) all such Intellectual Property Rights are enforceable and (ii) there is no existing infringement by another Person of any of the Intellectual Property Rights. (p) TRANSACTIONS WITH AFFILIATES AND EMPLOYEES. Except as set forth in SEC Reports, none of the officers or directors of the Company and, to the knowledge of the Company, none of the employees of the Company is presently a party to any transaction with the Company or any Subsidiary (other than for services as employees, officers and directors), including any contract, agreement or other arrangement providing for the furnishing of services to or by, providing for rental of real or personal property to or from, or otherwise requiring payments to or from any officer, director or such employee or, to the knowledge of the Company, any entity in which any officer, director, or any such employee has a substantial interest or is an officer, director, trustee or partner. (q) INTERNAL ACCOUNTING CONTROLS. The Company and the Subsidiaries maintain a system of internal accounting controls which the audit committee of 10

the board of directors reasonably believes is sufficient to provide reasonable assurance that: (i) transactions are executed in accordance with management's general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain asset accountability, (iii) access to assets is permitted only in accordance with management's general or specific authorization, and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences. (r) SOLVENCY. Assuming the closing of the transaction contemplated by the Transaction Documents and the Concurrent Purchase Agreement: (i) the Company reasonably believes that the fair value of its assets exceeds the amount that will be required to be paid on or in respect of the Company's existing debts and other liabilities (including known contingent liabilities) as they mature and (ii) the current cash flow of the Company, together with the proceeds the Company would receive, were it to liquidate all of its assets, after taking into account all anticipated uses of the cash, would be sufficient to pay all amounts on or in respect of its debt when such amounts are required to be paid. The Company does not intend to incur debts beyond its ability to pay such debts as they mature (taking into account the timing and amounts of cash to be payable on or in respect of its debt). (s) CERTAIN FEES. Except for fees or commissions payable by the Company as set forth on SCHEDULE 3.1(S), no brokerage or finder's fees or commissions are or will be payable by the Company to any broker, financial advisor or consultant, finder, placement agent, investment banker, bank or other Person with respect to the transactions contemplated by this Agreement. The Purchasers shall have no obligation with respect to any fees or with respect to any claims made by or on behalf of other Persons for fees of a type contemplated in this Section that may be due in connection with the transactions contemplated by this Agreement. (t) PRIVATE PLACEMENT. Assuming the accuracy of the Purchasers representations and warranties set forth in Section 3.2(b)-(e), no registration under the Securities Act is required for the offer, issuance and sale of the Securities by the Company to the Purchasers as contemplated hereby, and the offer and sale of the Securities hereunder will not be integrated with any offers or sales of other securities by the Company. (u) FORM S-3 ELIGIBILITY. The Company is eligible to utilize Form S-3 to register the resales of its Common Stock. (v) LISTING AND MAINTENANCE REQUIREMENTS. Except as set forth in the SEC Reports, the Company has not, in the two years preceding the date hereof, received notice (written or oral) from any Trading Market on which the Common Stock is or has been listed or quoted to the effect that the Company is not in compliance with the listing or maintenance requirements of such Trading Market. Except for the maintenance of the $1.00 minimum bid price (pursuant to the rules and regulations of the Nasdaq Stock Market), the Company is currently in compliance with all such listing and maintenance requirements. The issuance and sale of the Securities hereunder does not contravene the rules and regulations of the Trading Market and no approval of the shareholders of the Company is required for the Company to issue and deliver to the Purchasers the maximum number of shares of Common Stock contemplated by this Agreement, including by reason of the issuance of the Warrant Shares upon exercise in full 11

of the Warrants and Adjustment Warrants, if an, assuming that the exercise price of the Warrants at all times on and after the date of determination equals 100% of the actual exercise price on the Trading Day immediately prior to the date of determination). (w) REGISTRATION RIGHTS. Except for the registration rights granted pursuant to the Concurrent Purchase Agreement and the transactions contemplated thereby and as described in SCHEDULE 3.1(W), the Company has not granted or agreed to grant to any Person any rights (including "piggy back" registration rights) to have any securities of the Company registered with the Commission or any other governmental authority that have not been satisfied. (x) INVESTMENT COMPANY. The Company is not, and is not an Affiliate of, an "investment company" within the meaning of the Investment Company Act of 1940, as amended. (y) APPLICATION OF TAKEOVER PROTECTIONS. The Company has taken all necessary action, if any, in order to render inapplicable any control share acquisition, business combination, poison pill (including any distribution under a rights agreement) or other similar anti-takeover provision under the Company's Certificate of Incorporation (or similar charter documents) or the laws of its state of incorporation that is or could become applicable to the Purchasers as a result of the Purchasers and the Company fulfilling their obligations or exercising their rights under the Transaction Documents, including without limitation the Company's issuance of the Securities and the Purchasers' ownership of the Securities. (z) DISCLOSURE. Except for the information provided to a Purchaser pursuant to one or more confidentiality agreements, the Company confirms that neither it nor any other Person acting on its behalf has provided any of the Purchasers or their agents or counsel with any information that constitutes or might constitute material, non-public information. The Company understands and confirms that the Purchasers will rely on the foregoing representations in effecting transactions in securities of the Company. All representations and warranties of the Company set forth in this Agreement, including the Schedules to this Agreement, and the other Transaction Documents are true and correct and do not contain any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading. 3.2. REPRESENTATIONS AND WARRANTIES OF EACH PURCHASER. Each Purchaser hereby, for itself and for no other Purchaser, represents and warrants to the Company as follows: (a) ORGANIZATION; AUTHORITY. Such Purchaser is an entity duly organized, validly existing and in good standing under the laws of the jurisdiction of its organization with the requisite corporate or partnership power and authority to enter into and to consummate the transactions contemplated by the Transaction Documents and otherwise to carry out its obligations thereunder. The purchase by such Purchaser of its Securities pursuant to the terms hereof has been duly authorized by all necessary corporate action on the part of such Purchaser. Each of Transaction Document to which such Purchaser is a party has been duly executed by such Purchaser, and, when delivered by such Purchaser in accordance with the terms hereof, will constitute the valid and legally binding obligation of such Purchaser, enforceable against it in accordance with its terms. 12

(b) INVESTMENT INTENT. Such Purchaser is acquiring the Securities as principal for its own account for investment purposes only and not with a view to or for distributing or reselling such Securities or any part thereof, without prejudice, however, to such Purchaser's right, subject to the provisions of this Agreement, at all times to sell or otherwise dispose of all or any part of such Securities pursuant to an effective registration statement under the Securities Act or under an exemption from such registration and in compliance with applicable federal and state securities laws. Nothing contained herein shall be deemed a representation or warranty by such Purchaser to hold Securities for any period of time. Such Purchaser is acquiring the Securities hereunder in the ordinary course of its business. Such Purchaser does not have any agreement or understanding, directly or indirectly, with any Person to distribute any of the Securities. (c) PURCHASER STATUS. At the time such Purchaser was offered the Securities, it was, and at the date hereof it is, and on each date on which it exercises the Warrants, it will be, either (i) a "qualified institutional buyer" as defined in Rule 144A under the Securities Act or (ii) an institutional "accredited investor" as defined in Rule 501(a) under the Securities Act. Such Purchaser has not been formed solely for the purpose of acquiring the Securities. Such Purchaser is not a registered broker-dealer under Section 15 of the Exchange Act. (d) EXPERIENCE OF SUCH PURCHASER. Such Purchaser, either alone or together with its representatives, has such knowledge, sophistication and experience in business and financial matters so as to be capable of evaluating the merits and risks of the prospective investment in the Securities, and has so evaluated the merits and risks of such investment. Such Purchaser is able to bear the economic risk of an investment in the Securities and, at the present time, is able to afford a complete loss of such investment. (e) GENERAL SOLICITATION. To the knowledge of such Purchaser, such Purchaser is not purchasing the Securities as a result of any advertisement, article, notice or other communication regarding the Securities published in any newspaper, magazine or similar media or broadcast over television or radio or presented at any seminar or any other general solicitation or general advertisement. (f) ACCESS TO INFORMATION. Such Purchaser acknowledges that it has reviewed the Disclosure Materials and has been afforded: (i) the opportunity to ask such questions as it has deemed necessary of, and to receive answers from, representatives of the Company concerning the terms and conditions of the offering of the Securities and the merits and risks of investing in the Securities; (ii) access to information about the Company and the Subsidiaries and their respective financial condition, results of operations, business, properties, management and prospects sufficient to enable it to evaluate its investment; and (iii) the opportunity to obtain such additional information that the Company possesses or can acquire without unreasonable effort or expense that is necessary to make an informed investment decision with respect to the investment. Neither such inquiries nor any other investigation conducted by or on behalf of such Purchaser or its representatives or counsel shall modify, amend or affect such Purchaser's right to rely on the truth, accuracy and completeness of the Disclosure Materials and the Company's representations and warranties contained in the Transaction Documents. 13

The Company acknowledges and agrees that no Purchaser makes or has made any representations or warranties with respect to the transactions contemplated hereby other than those specifically set forth in this Section 3.2. ARTICLE IV. OTHER AGREEMENTS OF THE PARTIES 4.1. TRANSFER RESTRICTIONS. (a) The Securities may only be disposed of in compliance with state and federal securities laws. In connection with any transfer of the Securities other than pursuant to an effective registration statement, to the Company, to an Affiliate of a Purchaser who is an "accredited investor" as defined in Rule 501(a) under the Securities Act or in connection with a pledge as contemplated in Section 4.1(b), the Company may require the transferor thereof to provide to the Company an opinion of counsel selected by the transferor, the form and substance of which opinion shall be reasonably satisfactory to the Company, to the effect that such transfer does not require registration of such transferred Securities under the Securities Act. As a condition of transfer, any such transferee shall agree in writing to be bound by the terms of this Agreement and shall have the rights of a Purchaser under this Agreement, the Registration Rights Agreement, and, if such transfer is of all or a portion of the Warrants or Adjustment Warrants held by such Purchaser, as a holder of such Warrants or Adjustment Warrants, as the case may be. If requested by a Purchaser (or any subsequent transferee), the Company shall use its best efforts to effect such transfer of the Securities and shall file a prospectus supplement or other disclosure document as may be required in order to permit such transferee to utilize a Registration Statement to make registered resales of the Warrant Shares. (b) The Purchasers agree to the imprinting, so long as is required by this SECTION 4.1(B), of the following legend on the certificates evidencing the Securities: [NEITHER] THESE SECURITIES [NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE [CONVERTIBLE][EXERCISABLE]] HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. 14

The Company acknowledges and agrees that a Purchaser may from time to time pledge pursuant to a bona fide margin agreement or grant a security interest in some or all of the Securities and, if required under the terms of such arrangement, such Purchaser may transfer pledged or secured Securities to the pledgees or secured parties. Such a pledge or transfer would not be subject to approval or consent of the Company and no legal opinion of legal counsel to the pledgee, secured party or pledgor shall be required in connection therewith. Further, no notice shall be required of such pledge. At the appropriate Purchaser's expense, the Company will execute and deliver such reasonable documentation as a pledgee or secured party of Securities may reasonably request in connection with a pledge or transfer of the Securities including the preparation and filing of any required prospectus supplement under Rule 424(b)(3) of the Securities Act or other applicable provision of the Securities Act to appropriately amend the list of Selling Stockholders thereunder. (c) Certificates evidencing Common Shares and Warrant Shares shall not contain any legend (including the legend set forth in Section 4.1(b)): (i) while a registration statement (including a Registration Statement) covering the resale of such security is effective under the Securities Act, or (ii) following any sale of such Common Shares and Warrant Shares pursuant to Rule 144, or (iii) if such Common Shares and Warrant Shares are eligible for sale under Rule 144(k), or (iv) if such legend is not otherwise required under applicable requirements of the Securities Act (including judicial interpretations and pronouncements issued by the Staff of the Commission). The Company shall cause its counsel to issue the legal opinion included in the Transfer Agent Instructions to the Company's transfer agent on the Effective Date if requested by a holder thereof, and on any other date on which legends on stock certificates are not required under this Section 4.1(c). If all or any portion of a Warrant is exercised at a time when there is a effective registration statement to cover the resale of the Warrant Shares, such Warrant Shares shall be issued free of all legends. The Company agrees that following the Effective Date or at such time as such legend is no longer required under this Section 4.1(c), it will, no later than three Trading Days following the delivery by a Purchaser to the Company or the Company's transfer agent of a certificate representing Common Shares and Warrant Shares issued with a restrictive legend, deliver or cause to be delivered to such Purchaser a certificate representing such Common Shares and Warrant Shares that is free from all restrictive and other legends. The Company may not make any notation on its records or give instructions to any transfer agent of the Company that enlarge the restrictions on transfer set forth in this Section. 4.2. FURNISHING OF INFORMATION. As long as any Purchaser owns Securities, the Company covenants to timely file (or obtain extensions in respect thereof and file within the applicable grace period) all reports required to be filed by the Company after the date hereof pursuant to the Exchange Act. Upon the request of any such Person, the Company shall deliver to such Person a written certification of a duly authorized officer as to whether it has complied with the preceding sentence. As long as any Purchaser owns Securities, if the Company is not required to file reports pursuant to such laws, it will prepare and furnish to the Purchasers and make publicly available in accordance with Rule 144(c) such information as is required for the Purchasers to sell the Warrant Shares under Rule 144. 4.3. INTEGRATION. The Company shall not, and shall use its best efforts to ensure that no Affiliate of the Company shall, sell, offer for sale or solicit offers to buy or otherwise negotiate in respect of any security (as defined in Section 2 of the Securities Act) that would be integrated with the 15

offer or sale of the Securities in a manner that would require the registration under the Securities Act of the offer and sale of the Securities to the Purchasers, or that would be integrated with the offer or sale of the Securities for purposes of the rules and regulations of any Trading Market, if such integration would result in a violation of any such rule or regulation. 4.4. INCREASE IN AUTHORIZED SHARES. If on any date the Company would be, if notice of exercise or conversion were to be delivered on such date, precluded from issuing the number of Warrant Shares issuable upon exercise in full of all of the Warrants and Adjustment Warrants due to the unavailability of a sufficient number of authorized but unissued or reserved shares of Common Stock (ignoring any limits on the number of shares of Common Stock that may be owned by the Purchasers at any one time and assuming that the exercise price of the Warrants at all times on and after the date of determination equals 100% of the actual exercise price on the Trading Day immediately prior to the date of determination), then the Board of Directors of the Company shall promptly prepare and mail to the stockholders of the Company proxy materials requesting authorization to amend the Company's certificate of incorporation to increase the number of shares of Common Stock which the Company is authorized to issue so as to provide enough shares for issuance of the Warrant Shares. In connection therewith, the Board of Directors shall (a) adopt proper resolutions authorizing such increase in authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain stockholder approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 60th day after delivery of the proxy materials relating to such meeting) and (c) within five Business Days of obtaining such stockholder authorization, file an appropriate amendment to the Company's certificate or articles of incorporation to evidence such increase. 4.5. SUBSEQUENT PLACEMENTS AND REGISTRATIONS. (a) Prior to the Effective Date, the Company will not, directly or indirectly, offer, issue, sell, grant any option to purchase, or otherwise dispose of (or announce any offer, issuance, sale, grant or any option to purchase or other disposition of) any Common Stock, Common Stock Equivalents or any of its Subsidiaries' equity or Common Stock Equivalents, including the issuance of Common Stock pursuant to a primary registration statement or pursuant to an equity line of credit or similar transaction (such offer, issuance, sale, grant, disposition or announcement being referred to as "SUBSEQUENT PLACEMENT"). (b) Following the Effective Date through and including the expiration of the first anniversary of the Effective Date, the Company shall not effect a Subsequent Placement, unless (i) the Company delivers to each Purchaser a written notice (the "SUBSEQUENT PLACEMENT NOTICE") of its intention to effect such Subsequent Placement, which Subsequent Placement Notice shall describe in reasonable detail the proposed terms of such Subsequent Placement, the amount of proceeds intended to be raised thereunder, the Person with whom such Subsequent Placement is proposed to be effected, and attached to which shall be a term sheet or similar document relating thereto and (ii) such Purchaser shall not have notified the Company by 6:30 p.m. (New York City time) on the fifth Trading Day after its receipt of the Subsequent Placement Notice of its willingness to provide (or to cause its designee to provide), subject to completion of mutually acceptable documentation, all or part of such financing to the Company on the same terms set forth in the Subsequent Placement Notice. If the Purchasers shall 16

fail to so notify the Company of their willingness to participate in full in the Subsequent Placement, the Company may effect the remaining portion of such Subsequent Placement on the terms and to the Persons set forth in the Subsequent Placement Notice. The Company shall provide the Purchasers with a second Subsequent Placement Notice and the Purchasers will again have the right of first refusal set forth in this Section 4.5(a), if the Subsequent Placement subject to the initial Subsequent Placement Notice is not consummated for any reason on the terms set forth in such Subsequent Notice within 30 Trading Days after the date of the initial Subsequent Placement Notice with the Person identified in the Subsequent Placement Notice. If the Purchasers indicate a willingness to provide financing in excess of the amount set forth in the Subsequent Placement Notice, then each Purchaser will be entitled to provide financing pursuant to such Subsequent Placement Notice up to an amount equal to such Purchaser Percentage of the financing, but the Company shall not be required to accept financing from the Purchasers in an amount in excess of the amount set forth in the Subsequent Placement Notice. (c) The one year period set forth in Section 4.5(b) shall be extended for the number of Trading Days during such period in which (i) trading in the Common Stock is suspended by any Trading Market, or (ii) following the Effective Date, the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the Purchasers for the resale of the Common Shares and the Warrant Shares. (d) The restrictions contained in Sections 4.5(a) and (b) shall not apply to any grant or issuance by the Company of (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction or (iv) the issuance of Common Stock to any Person approved by the Purchasers (such Person, an "APPROVED PURCHASER") of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) pursuant to Registration Statement No. 333- 71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the Concurrent Purchase Agreement and the transactions contemplated thereby. (e) Notwithstanding anything herein to the contrary, the Company may not issue, agree to issue, or enter into any arrangement pursuant to which it may issue at any time, shares of Common Stock or Common Stock Equivalents that would entitle any holder thereof to receive at any time shares of Common Stock at, in any such case, a price that is less than the Per Share Purchase Price, unless prior to the earlier to occur of the entering into of such agreement or such issuance, the Company obtains the approval of its shareholders pursuant to the rules and regulations of the Nasdaq Stock Market, Inc. ("NASDAQ") (including, without limitation, NASD Rules 4350(i), NASD IM-4300, NASD IM-4310-2, and Rule 4350(i)): for (i) the transactions contemplated by the Transaction Documents and the Concurrent Purchase Agreement, including the sale, 17

issuance and potential issuance of the securities issued and issuable thereunder, including the Securities issued pursuant to this Agreement, as well as the shares of Common Stock issuable in accordance with the Warrants and Adjustment Warrants, (ii) the issuance under the Transaction Documents and the Concurrent Purchase Agreement (and the transactions contemplated thereby) of in excess of 19.99% of the shares of Common Stock outstanding prior to the Closing Date at a price that is less than the greater of book or market value of the Common Stock, and/or (iii) the potential issuance of securities of the Company having sufficient voting power to result in a change of control of the Company as described under the rules of Nasdaq. The Company understands and agrees that the shares of Common Stock that have been issued or that may be issued to and then held by any Purchaser or any of such Purchaser's Affiliates may not cast votes on such matters. 4.6. ADJUSTMENT WARRANT. (a) If at any time prior to the 18th month anniversary of the Effective Date, (a) the Company shall issue or agree to issue shares of Common Stock at a price below the Per Share Purchase Price or (b) the Company or any of its subsidiaries shall issue any Common Stock Equivalents or shall enter an agreement to issue Common Stock Equivalents, that entitle any Person to acquire shares of Common Stock at a price per share less than the Per Share Purchase Price (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Per Share, such issuance shall be deemed to have occurred for less than the Per Share Purchase Price), then the Per Share Purchase Price shall be adjusted automatically for the purposes of this Section to equal the price at which the shares of Common Stock or Common Stock Equivalents were deemed issued under this Section (such price, the "ADJUSTED PRICE") and the Company shall, within two Trading Days of the date of such issuance or agreement to issue Common Stock or Common Stock Equivalents, deliver a notice to each Purchaser who acquired Common Shares at the Closing in accordance with Section 2.3(a)(i) of the number of Adjustment Shares (as hereinafter defined) issuable under such Purchaser's Adjustment Warrant, giving the Purchaser the right to purchase, for par value of the Common Stock, a number of shares of Common Stock (such shares, the "ADJUSTMENT SHARES") equal to: (1) the number of Common Shares that would have been issued to such Purchaser on the Closing Date at the Adjusted Price less (2) the number of Common Shares actually issued to such Purchaser on the Closing Date. The Company shall notify the Purchasers in writing of its issuance of any such Common Stock or Common Stock Equivalents by the end of the day on which the Common Stock or Common Stock Equivalents are first issued. The number of Adjustment Shares shall be calculated on each date of the issuance of the Common Stock or Common Stock Equivalent at issue, without regard to a delay in the conversion, exchange or other adjustment or resetting provision applicable to such Common Stock Equivalent, which Adjusted Price shall continue for as long as the Purchaser holds such Adjustment Warrant. Such notice will be delivered whenever such Common Stock or Common Stock Equivalents are issued. (b) If the Company or any subsidiary issues Common Stock Equivalents at a price per share that floats or resets or otherwise varies or is subject to adjustment based on market prices of the Common Stock (a "FLOATING PRICE SECURITY"), then for purposes of applying the preceding paragraph in connection with any subsequent exercise, the Adjusted Price will be deemed to 18

equal the lowest price per share at which any holder of such Floating Price Security is entitled to acquire shares of Common Stock (regardless of whether any such Purchaser actually acquires any shares on such date). (c) The provisions contained in Section 4.6(a) shall not apply to any grant or issuance by the Company of (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction or (iv) the issuance of Common Stock to any Approved Purchaser of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) pursuant to Registration Statement No. 333-71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the Concurrent Purchase Agreement (or the transactions contemplated thereby). (d) The 18th month period set forth in this Section shall be extended for the number of Trading Days during such period in which (i) trading in the Common Stock is suspended by any Trading Market, or (ii) following the Effective Date, the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the Purchasers for the resale of the Common Shares and the Warrant Shares. (e) The Company covenants and undertakes to file a registration statement covering the resale by the Purchasers (or their transferees) of the shares of common stock issuable upon exercise of each Adjustment Warrant by the 30th day following such issuance of an Adjustable Warrant and, such registration statement shall be treated as a "Registration Statement" under the Registration Rights Agreement and the Purchasers and the Company shall be accorded the obligations and rights under the Registration Rights Agreement with respect to such registration statement. In addition, the Adjustment Warrant shall be entitled to full piggy-back registration rights on all future or then pending Company registration statements. (f) If, at any time prior to the 18th month anniversary following the Effective Date (as such period may be extended pursuant to this Section 4.6): (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then any successor to the Company or surviving entity in such 19

Fundamental Transaction shall continue to be bound by the obligation to increase the number of Adjustment Shares issuable under the Adjustment Warrant under and in accordance with this Section 4.6 and to honor all such Adjustment Warrants. 4.7. SECURITIES LAWS DISCLOSURE; PUBLICITY. No later than the Business Day immediately following the Closing Date, the Company shall issue a press release and file a Current Report on Form 8-K, in each case reasonably acceptable to the Purchasers disclosing all material terms of the transactions contemplated hereby. The Company and the Purchasers shall consult with each other in issuing any press releases with respect to the transactions contemplated hereby. Notwithstanding the foregoing, other than in any registration statement filed pursuant to the Registration Rights Agreement and filings related thereto, the Company shall not publicly disclose the name of any Purchaser, or include the name of any Purchaser in any filing with the Commission or any regulatory agency or Trading Market, without the prior written consent of such Purchaser, except to the extent such disclosure is required by law or Trading Market regulations, in which case the Company shall provide the Purchasers with prior notice of such disclosure. 4.8. INDEMNIFICATION OF PURCHASERS. The Company hereby indemnifies and holds the Purchasers and their directors, officers, shareholders, partners, employees and agents (each, a "PURCHASER PARTY") harmless from any and all losses, liabilities, obligations, claims, contingencies, damages, costs and expenses, including all judgments, amounts paid in settlements, court costs and reasonable attorneys' fees and costs of investigation (collectively, "LOSSES") that any such Purchaser Party may suffer or incur as a result of or relating to (a) any misrepresentation, breach or inaccuracy, or any allegation by a third party that, if true, would constitute a breach or inaccuracy, of any of the representations, warranties, covenants or agreements made by the Company in this Agreement or in the other Transaction Documents; or (b) any cause of action, suit or claim brought or made against such Purchaser Party and solely arising out of or solely resulting from the execution, delivery, performance or enforcement of this Agreement or any of the other Transaction Documents (other than due to the gross negligence or willful misconduct of the Purchaser Party). The Company will reimburse such Purchaser for its reasonable legal and other expenses (including the cost of any investigation, preparation and travel in connection therewith) incurred in connection therewith, as such expenses are incurred. The Purchaser Party may not, without the prior written consent of the Company, agree to any settlement of any claim or action with respect to which the Company is required to indemnify the Purchaser Party pursuant to this Section 4.8. 4.9. SHAREHOLDERS RIGHTS PLAN. No claim will be made or enforced by the Company or any other Person that any Purchaser is an "Acquiring Person" under any shareholders rights plan or similar plan or arrangement in effect or hereafter adopted by the Company, or that any Purchaser could be deemed to trigger the provisions of any such plan or arrangement, by virtue of receiving the Securities under the Transaction Documents or under any other agreement between the Company and the Purchasers. 4.10. NON-PUBLIC INFORMATION. The Company covenants and agrees that neither it nor any other Person acting on its behalf will provide any Purchaser or its agents or counsel with any information that the Company believes constitutes material non-public information, unless prior thereto such Purchaser shall have executed a written agreement regarding the confidentiality and use of 20

such information. The Company understands and confirms that each Purchaser shall be relying on the foregoing representations in effecting transactions in securities of the Company. 4.11. USE OF PROCEEDS. The Company shall use the net proceeds from the sale of the Securities hereunder for research and development or working capital purposes that are consistent with the Company's business as at the Closing Date (as reported in the SEC Reports) and not for the satisfaction of any portion of the Company's debt (other than payment of trade payables in the ordinary course of the Company's business and prior practices), nor to redeem any Company equity or equity equivalent securities, nor to settle any outstanding litigation nor to extend any loans to its directors or senior management. 4.12. LOCK-UP LETTER. On the Closing Date, the Company shall issue a stop-transfer order to the Company's transfer agent, which order shall be acknowledged by the transfer agent, in connection with each of the Lock-Up Letter. ARTICLE V. MISCELLANEOUS 5.1. FEES AND EXPENSES. Except as expressly set forth in the Transaction Documents, each party shall pay the fees and expenses of its advisers, counsel, accountants and other experts, if any, and all other expenses incurred by such party incident to the negotiation, preparation, execution, delivery and performance of this Agreement. The Company shall pay all stamp and other taxes and duties levied in connection with the sale of the Securities. 5.2. ENTIRE AGREEMENT. The Transaction Documents, together with the Exhibits and Schedules thereto, contain the entire understanding of the parties with respect to the subject matter hereof and supersede all prior agreements and understandings, oral or written, with respect to such matters, which the parties acknowledge have been merged into such documents, exhibits and schedules. 5.3. NOTICES. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Agreement later than 6:30 p.m. (New York City time) on any date and earlier than 11:59 p.m. (New York City time) on such date, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The address for such notices and communications shall be as follows: If to the Company: Peregrine Pharmaceuticals, Inc. 14272 Franklin Avenue Tustin, CA 92780 Facsimile No.: (714) 838-5817 Attn: Chief Financial Officer 21

With a copy to: Jeffers, Shaff & Falk, LLP 18881 Von Karman Avenue, Suite 1400 Irvine, CA 92612 Facsimile No.: (949) 660-7799 Attn: Mark R. Ziebell, Esq. If to a Purchaser: To the address set forth under such Purchaser's name on the signature pages hereto. or such other address as may be designated in writing hereafter, in the same manner, by such Person. 5.4. AMENDMENTS; WAIVERS. No provision of this Agreement may be waived or amended except in a written instrument signed, in the case of an amendment, by the Company and the Purchasers holding a majority-in-interest of the Common Shares at Closing or, in the case of a waiver, by the party against whom enforcement of any such waiver is sought. No waiver of any default with respect to any provision, condition or requirement of this Agreement shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in any manner impair the exercise of any such right. 5.5. CONSTRUCTION. The headings herein are for convenience only, do not constitute a part of this Agreement and shall not be deemed to limit or affect any of the provisions hereof. The language used in this Agreement will be deemed to be the language chosen by the parties to express their mutual intent, and no rules of strict construction will be applied against any party. 5.6. SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and inure to the benefit of the parties and their successors and permitted assigns. The Company may not assign this Agreement or any rights or obligations hereunder without the prior written consent of the Purchasers. Any Purchaser may assign any or all of its rights under this Agreement and the Registration Rights Agreement to any Person to whom such Purchaser assigns or transfers any Securities in accordance with the terms of this Agreement, provided such transferee agrees in writing to be bound, with respect to the transferred Securities, by the provisions hereof that apply to the "Purchasers." 5.7. NO THIRD-PARTY BENEFICIARIES. This Agreement is intended for the benefit of the parties hereto and their respective successors and permitted assigns and is not for the benefit of, nor may any provision hereof be enforced by, any other Person. 5.8. LIQUIDATED DAMAGES. The Company's obligations to pay any liquidated damages or other amounts owing under the Transaction Documents is a continuing obligation of the Company and shall not terminate until all unpaid liquidated damages and other amounts have been paid notwithstanding the fact that the instrument or security pursuant to which such liquidated damages or other amounts are due and payable shall have been canceled. Such liquidated damages are not to be construed as the sole damages for remedies available to 22

the Persons entitled to the same. The parties hereby agree that all remedies and damages are cumulative. 5.9. GOVERNING LAW. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all Proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of the any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert in any Proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such Proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby. If either party shall commence a Proceeding to enforce any provisions of a Transaction Document, then the prevailing party in such Proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such Proceeding. 5.10. SURVIVAL. The representations, warranties, agreements and covenants contained herein shall survive the Closing. 5.11. EXECUTION. This Agreement may be executed in two or more counterparts, all of which when taken together shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that both parties need not sign the same counterpart. In the event that any signature is delivered by facsimile transmission, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if such facsimile signature page were an original thereof. 5.12. SEVERABILITY. If any provision of this Agreement is held to be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Agreement shall not in any way be affected or impaired thereby and the parties will attempt to agree upon a valid and enforceable provision that is a reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Agreement. 23

5.13. RESCISSION AND WITHDRAWAL RIGHT. Notwithstanding anything to the contrary contained in (and without limiting any similar provisions of) the Transaction Documents, whenever any Purchaser exercises a right, election, demand or option under a Transaction Document and the Company does not timely perform its related obligations within the periods therein provided, then such Purchaser may rescind or withdraw, in its sole discretion from time to time upon written notice to the Company, any relevant notice, demand or election in whole or in part without prejudice to its future actions and rights. 5.14. REPLACEMENT OF SECURITIES. If any certificate or instrument evidencing any Securities is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation thereof, or in lieu of and substitution therefor, a new certificate or instrument, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested by the Company's transfer agent. The applicants for a new certificate or instrument under such circumstances shall also pay any reasonable third-party costs associated with the issuance of such replacement Securities. 5.15. REMEDIES. In addition to being entitled to exercise all rights provided herein or granted by law, including recovery of damages, each of the Purchasers and the Company will be entitled to specific performance under the Transaction Documents. Notwithstanding any other remedy herein permitted or provided under the Transaction Documents, the parties hereby agree to waive in any action for specific performance of any such obligation the defense that a remedy at law would be adequate. 5.16. PAYMENT SET ASIDE. To the extent that the Company makes a payment or payments to any Purchaser pursuant to any Transaction Document or a Purchaser enforces or exercises its rights thereunder, and such payment or payments or the proceeds of such enforcement or exercise or any part thereof are subsequently invalidated, declared to be fraudulent or preferential, set aside, recovered from, disgorged by or are required to be refunded, repaid or otherwise restored to the Company, a trustee, receiver or any other person under any law (including, without limitation, any bankruptcy law, state or federal law, common law or equitable cause of action), then to the extent of any such restoration the obligation or part thereof originally intended to be satisfied shall be revived and continued in full force and effect as if such payment had not been made or such enforcement or setoff had not occurred. 5.17. INDEPENDENT NATURE OF PURCHASERS' OBLIGATIONS AND RIGHTS. The obligations of each Purchaser under any Transaction Document are several and not joint with the obligations of any other Purchaser, and no Purchaser shall be responsible in any way for the performance of the obligations of any other Purchaser under any Transaction Document. Nothing contained herein or in any Transaction Document, and no action taken by any Purchaser pursuant thereto, shall be deemed to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Purchasers are in any way acting in concert or as a group with respect to such obligations or the transactions contemplated by the Transaction Document. Each Purchaser shall be entitled to independently protect and enforce its rights, including without limitation the rights arising out of this Agreement or out of the other Transaction Documents, and it shall not be necessary for any other Purchaser to be joined as an additional party in any proceeding for such purpose. 24

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES FOLLOW] 25

IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: /S/ EDWARD LEGERE --------------------------------- Name: Edward Legere Title: President and CEO [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES FOR PURCHASERS FOLLOWS] 26

NAME OF PURCHASER: ZLP MASTER FUND, LTD By: /S/ CRAIG LUCAS ---------------------------------- Name: Craig Lucas Title: Director Common Stock Investment Amount: $ 2,144,000 Address for Notice: c/o Zimmer Lucas Partners, LLC 45 Boardway 28th Floor New York, NY 10006 Attn: Mr. John Lee With a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. 27

EXHIBIT 10.84 FORM OF ZLP REGISTRATION RIGHTS AGREEMENT REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this "AGREEMENT") is made and entered into as of August 9, 2002, by and among Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), and the investors signatory hereto (each a "PURCHASER" and collectively, the "PURCHASERS"). This Agreement is made pursuant to the Securities Purchase Agreement, dated as of the date hereof among the Company and the Purchasers (the "PURCHASE AGREEMENT"). The Company and the Purchasers hereby agree as follows: 1. DEFINITIONS. Capitalized terms used and not otherwise defined herein that are defined in the Purchase Agreement shall have the meanings given such terms in the Purchase Agreement. As used in this Agreement, the following terms shall have the following meanings: "COMMON SHARES" means the shares of Common Stock issued or issuable to the Purchasers pursuant to the PURCHASE Agreement. "COMMON STOCK" MEANS the Common Stock, $.001 par value per share, of the Company. "EFFECTIVE DATE" MEANS the date on which a Registration Statement is declared effective by the Commission. "EFFECTIVENESS DATE" means, (a) with respect to the initial Registration Statement required to be filed hereunder, the earlier of (i) the 90th day following the Closing Date and (ii) the third Trading Day following the date on which the Company is notified by the Commission that such Registration Statement will not be reviewed or is no longer subject to further review and comments, and (b) with respect to any additional Registration Statements that may be required pursuant to SECTION 2(C) or SECTION 2(D) the earlier of (i) the 90th day following the date on which the Company first knows, or reasonably should have known, that such additional Registration Statement is required under such Section and (ii) the third Trading Day following the date on which the Company is notified by the Commission that such Registration Statement will not be reviewed or is no longer subject to further review and comments. "EFFECTIVENESS PERIOD" shall have the meaning set forth in Section 2(a). "FILING DATE" means: (a) with respect to the initial Registration Statement required to be filed hereunder, the 30th day following the Closing Date, and (b) with respect to any additional Registration Statements that may be required pursuant to Section 2(c), the 30th day following the date on which the Company first knows, or reasonably should have known, that such additional Registration Statement is required under such Section. "HOLDER" or "HOLDERS" means the holder or holders, as the case may be, from time to time of Registrable Securities.

"INDEMNIFIED PARTY" shall have the meaning set forth in Section 5(c). "INDEMNIFYING PARTY" shall have the meaning set forth in Section 5(c). "LOSSES" shall have the meaning set forth in Section 5(a). "PROCEEDING" means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial proceeding, such as a deposition), whether commenced or threatened. "PROSPECTUS" means the prospectus included in a Registration Statement (including, without limitation, a prospectus that includes any information previously omitted from a prospectus filed as part of an effective registration statement in reliance upon Rule 430A promulgated under the Securities Act), as amended or supplemented by any prospectus supplement, with respect to the terms of the offering of any portion of the Registrable Securities covered by a Registration Statement, and all other amendments and supplements to the Prospectus, including post-effective amendments, and all material incorporated by reference or deemed to be incorporated by reference in such Prospectus. "REGISTRABLE SECURITIES" means the Common Shares and Warrant Shares, together with any securities issued or issuable upon any stock split, dividend or other distribution, recapitalization or similar event with respect to the foregoing. "REGISTRATION STATEMENT" means each of the following: (a) an initial registration statement which is required to register the resale of not less than 125% of the Registrable Securities measured on the Closing Date, the Filing Date or the date of request for acceleration of such registration statement (whichever yields the highest number of shares), (b) each additional registration statement, if any, contemplated by Section 2(c), and (c) including, in each case, the Prospectus, amendments and supplements to each such registration statement or Prospectus, including pre- and post-effective amendments, all exhibits thereto, and all material incorporated by reference or deemed to be incorporated by reference in such registration statement. "RULE 144" means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. "RULE 415" means Rule 415 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. "RULE 424" means Rule 424 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. -2-

"SPECIAL COUNSEL" means legal counsel to a Purchaser who will be reimbursed by the Company pursuant to Section 4. "WARRANT SHARES" means the shares of Common Stock issuable upon exercise of the Warrants. "WARRANTS" mean the Warrants and Adjustment Warrant issued or issuable under the Purchase Agreement. 2. REGISTRATION. (a) On or prior to each Filing Date, the Company shall prepare and file with the Commission a Registration Statement covering the resale of all Registrable Securities required to be included in such Registration Statement for an offering to be made on a continuous basis pursuant to Rule 415. Each Registration Statement shall be on Form S-3 (except if the Company is not then eligible to register for resale the Registrable Securities on Form S-3, in which case such registration shall be on another appropriate form in accordance herewith) and shall contain (except if otherwise required by the Commission) the "PLAN OF DISTRIBUTION" attached hereto as ANNEX A. The Company shall use its best efforts to cause each Registration Statement to be declared effective under the Securities Act as promptly as possible, but in any event prior to the applicable Effectiveness Date, and shall use its best efforts to keep such Registration Statement continuously effective under the Securities Act until the date which is two years after the date that such Registration Statement is declared effective by the Commission or such earlier date when all Registrable Securities covered by a Registration Statement have been sold or may be sold without volume restrictions pursuant to Rule 144(k) as determined by the counsel to the Company pursuant to a written opinion letter to such effect, addressed and acceptable to the Company's transfer agent and the affected Holders (the "EFFECTIVENESS PERIOD"). (b) If: (i) a Registration Statement is not filed on or prior to its Filing Date (if the Company files a Registration Statement without affording the Holder the opportunity to review and comment on the same as required by Section 3(a), the Company shall not be deemed to have satisfied clause (i)), or (ii) the Company fails to file with the Commission a request for acceleration in accordance with Rule 461 promulgated under the Securities Act, within five Trading Days of the date that the Company is notified (orally or in writing, whichever is earlier) by the Commission that a Registration Statement will not be "reviewed," or not subject to further review, or (iii) prior to its Effective Date, the Company fails to file a pre-effective amendment and otherwise respond in writing to comments made by the Commission in respect of such Registration Statement within fifteen Trading Days after the receipt of comments by or notice from the Commission that such amendment is required in order for a Registration Statement to be declared effective, or (iv) a Registration Statement filed or required to be filed hereunder is not declared effective by the Commission by its Effectiveness Date, or (v) after the Effective Date, a Registration Statement ceases for any reason to remain continuously effective as to all Registrable Securities for which it is required to be effective, or the Holders are not permitted to utilize the Prospectus therein to resell such Registrable Securities, for in any such cases an aggregate of twenty Trading Days (which need not be consecutive Trading Days) (any such failure or breach being referred to as an "EVENT," and for purposes of clause (i) or (iv) the date on which such -3-

Event occurs, or for purposes of clause (ii) the date on which such five Trading Day period is exceeded, or for purposes of clauses (iii) the date which such fifteen Trading Day period is exceeded, or for purposes of clause (v) the date on which such twenty Trading Day period is exceeded being referred to as "EVENT DATE"), then in addition to any other rights the Holders may have under any Transaction Documents or applicable law (it being agreed that these liquidated damages are not to be construed as the sole remedy for any Events but are in addition to any other damages and remedies which may be or become due under the Transaction Documents): (x) on each such Event Date the Company shall pay to each Holder an amount in cash, as liquidated damages and not as a penalty, equal to 1.5% of the aggregate investment amount paid by such Holder pursuant to the Purchase Agreement; and (y) on each monthly anniversary of each such Event Date (if the applicable Event shall not have been cured by such date) until the applicable Event is cured, the Company shall pay to each Holder an amount in cash, as liquidated damages and not as a penalty, equal to 1.5% of the aggregate investment amount paid by such Holder pursuant to the Purchase Agreement. If the Company fails to pay any liquidated damages pursuant to this Section in full within seven days after the date payable, the Company will pay interest thereon at a rate of 12% per annum (or such lesser maximum amount that is permitted to be paid by applicable law) to the Holder, accruing daily from the date such liquidated damages are due until such amounts, plus all such interest thereon, are paid in full. Each Holder agrees that it will provide the Company with any comments such Holder may have to a Registration Statement within five Trading Days after such Holder's receipt of such Registration Statement. The Company shall not be liable to pay any liquidated damages to a Holder due to a delay in the Effectiveness Date if such delay is a result of such Holder's failure to provide the Company with such Holders' comments to a Registration Statement. Notwithstanding the foregoing, the amount of liquidated damages with respect to a Registration Statement covering the Warrant Shares with respect to the Adjustment Warrant (if such Warrant Shares are not included in the first Registration Statement filed following the date hereof) shall be based on 1.5% times the lesser of (i) the aggregate investment amount paid by such Holder pursuant to the Purchase Agreement and (ii) the product of the Closing Price on the Trading Day immediately prior to the Event Date at issue multiplied by the number of Warrant Shares at issue. (c) If the number of Registrable Securities issuable at any time exceeds 85% of the number of shares of Common Stock then registered in a Registration Statement, then the Company shall file an additional Registration Statement covering the resale of by the Holders of not less than 125% of the number of Registrable Securities required in order that all Warrant Shares issuable upon exercise of the Warrants would then be registered in accordance with this Agreement. (d) Notwithstanding anything herein to the contrary, the Company shall prepare and file a Registration Statement covering the resale of shares of Common Stock issuable upon exercise of each Adjustment Warrant within 30 days following each issuance of such Adjustable Warrant. 3. REGISTRATION PROCEDURES In connection with the Company's registration obligations hereunder, the Company shall: -4-

(a) Not less than five Trading Days prior to the filing of the Registration Statement or any related Prospectus or any amendment or supplement thereto, the Company shall, (i) furnish to the Holders and their Special Counsel copies of all such documents proposed to be filed (including documents incorporated or deemed incorporated by reference) which documents will be subject to the review of such Holders and their Special Counsel, and (ii) cause its officers and directors, counsel and independent certified public accountants to respond to such inquiries as shall be necessary, in the reasonable opinion of respective counsel to conduct a reasonable investigation within the meaning of the Securities Act. The Company shall not file the Registration Statement or any such Prospectus or any amendments or supplements thereto to which the Holders of a majority of the Registrable Securities and their Special Counsel shall reasonably object in good faith. (b) (i) Prepare and file with the Commission such amendments, including post-effective amendments, to the Registration Statement and the Prospectus used in connection therewith as may be necessary to keep the Registration Statement continuously effective as to the applicable Registrable Securities for the Effectiveness Period and prepare and file with the Commission such additional Registration Statements in order to register for resale under the Securities Act all of the Registrable Securities; (ii) cause the related Prospectus to be amended or supplemented by any required Prospectus supplement, and as so supplemented or amended to be filed pursuant to Rule 424; (iii) respond as promptly as reasonably possible, and in any event within fifteen Trading Days, to any comments received from the Commission with respect to the Registration Statement or any amendment thereto and, as promptly as reasonably possible provide the Holders true and complete copies of all correspondence from and to the Commission relating to the Registration Statement; and (iv) comply in all material respects with the provisions of the Securities Act and the Exchange Act with respect to the disposition of all Registrable Securities covered by the Registration Statement during the applicable period in accordance with the intended methods of disposition by the Holders thereof set forth in the Registration Statement as so amended or in such Prospectus as so supplemented. (c) Notify the Holders of Registrable Securities to be sold and their Special Counsel as promptly as reasonably possible (and, in the case of (i)(A) below, not less than three Trading Days prior to such filing) and (if requested by any such Person) confirm such notice in writing no later than one Trading Day following the day (i)(A) when a Prospectus or any Prospectus supplement or post-effective amendment to the Registration Statement is proposed to be filed; (B) when the Commission notifies the Company whether there will be a "review" of such Registration Statement and whenever the Commission comments in writing on such Registration Statement (the Company shall provide true and complete copies thereof and all written responses thereto to each of the Holders); and (C) with respect to the Registration Statement or any post-effective amendment, when the same has become effective; (ii) of any request by the Commission for amendments or supplements to the Registration Statement or Prospectus or for additional information; (iii) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement covering any or all of the Registrable Securities or the initiation of any Proceedings for that purpose; (iv) of the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Registrable Securities for sale in any jurisdiction, or the initiation or threatening of any Proceeding for such purpose; and (v) of the occurrence of any event or passage of time that makes the financial statements included in the Registration Statement ineligible for inclusion therein or any statement made in the Registration Statement or -5-

Prospectus or any document incorporated or deemed to be incorporated therein by reference untrue in any material respect or that requires any revisions to the Registration Statement, Prospectus or other documents so that, in the case of the Registration Statement or the Prospectus, as the case may be, it will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading. (d) Use its best efforts to avoid the issuance of, or, if issued, obtain the withdrawal of (i) any order suspending the effectiveness of the Registration Statement, or (ii) any suspension of the qualification (or exemption from qualification) of any of the Registrable Securities for sale in any jurisdiction, at the earliest practicable moment. (e) Furnish to each Holder and their Special Counsel, without charge, at least one conformed copy of each Registration Statement and each amendment thereto, including financial statements and schedules, all documents incorporated or deemed to be incorporated therein by reference, and all exhibits to the extent requested by such Person (including those previously furnished or incorporated by reference) promptly after the filing of such documents with the Commission; provided, however, if the Registration Statement is on Form S-3, then the Company shall not be obligated to provide copies of any financial statements incorporated by reference therein, but only to the extent that such financial statements have been previously filed with the Commission. (f) Promptly deliver to each Holder and their Special Counsel, without charge, as many copies of the Prospectus or Prospectuses (including each form of prospectus) and each amendment or supplement thereto as such Persons may reasonably request. The Company hereby consents to the use of such Prospectus and each amendment or supplement thereto by each of the selling Holders in connection with the offering and sale of the Registrable Securities covered by such Prospectus and any amendment or supplement thereto and each Holder agrees to comply with the prospectus delivery requirements in accordance with the Securities Act in connection with sales made by such Holder of the Registrable Securities. (g) Prior to any public offering of Registrable Securities, use its best efforts to register or qualify or cooperate with the selling Holders and their Special Counsel in connection with the registration or qualification (or exemption from such registration or qualification) of such Registrable Securities for offer and sale under the securities or Blue Sky laws of such jurisdictions within the United States as any Holder requests in writing, to keep each such registration or qualification (or exemption therefrom) effective during the Effectiveness Period and to do any and all other acts or things necessary or advisable to enable the disposition in such jurisdictions of the Registrable Securities covered by a Registration Statement; PROVIDED, that the Company shall not be required to qualify generally to do business in any jurisdiction where it is not then so qualified or subject the Company to any material tax in any such jurisdiction where it is not then so subject. (h) Cooperate with the Holders to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be delivered to a transferee pursuant to a Registration Statement, which certificates shall -6-

be free, to the extent permitted by the Purchase Agreement, of all restrictive legends, and to enable such Registrable Securities to be in such denominations and registered in such names as any such Holders may request. (i) Upon the occurrence of any event contemplated by Section 3(c)(v), as promptly as reasonably possible, prepare a supplement or amendment, including a post-effective amendment, to the Registration Statement or a supplement to the related Prospectus or any document incorporated or deemed to be incorporated therein by reference, and file any other required document so that, as thereafter delivered, neither the Registration Statement nor such Prospectus will contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading. (j) Comply with all applicable rules and regulations of the Commission. (k) The Company may require, at any time prior to the third Trading Day prior to the Filing Date, each selling Holder to furnish to the Company a certified statement as to the number of shares of Common Stock beneficially owned by such Holder and, if requested by the Commission, the controlling person thereof, within three Trading Days of the Company's request. 4. REGISTRATION EXPENSES. All fees and expenses incident to the performance of or compliance with this Agreement by the Company shall be borne by the Company whether or not any Registrable Securities are sold pursuant to the Registration Statement. The fees and expenses referred to in the foregoing sentence shall include, without limitation, (i) all registration and filing fees (including, without limitation, fees and expenses (A) with respect to filings required to be made with the Trading Market on which the Common Stock is then listed for trading, and (B) in compliance with applicable state securities or Blue Sky laws), (ii) printing expenses (including, without limitation, expenses of printing certificates for Registrable Securities and of printing prospectuses if the printing of prospectuses is reasonably requested by the holders of a majority of the Registrable Securities included in the Registration Statement), (iii) messenger, telephone and delivery expenses, (iv) fees and disbursements of counsel for the Company, (v) Securities Act liability insurance, if the Company so desires such insurance, and (vi) fees and expenses of all other Persons retained by the Company in connection with the consummation of the transactions contemplated by this Agreement. In addition, the Company shall be responsible for all of its internal expenses incurred in connection with the consummation of the transactions contemplated by this Agreement (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expense of any annual audit and the fees and expenses incurred in connection with the listing of the Registrable Securities on any securities exchange as required hereunder. 5. INDEMNIFICATION (a) INDEMNIFICATION BY THE COMPANY. The Company shall, notwithstanding any termination of this Agreement, indemnify and hold harmless each Holder, the officers, directors, agents, brokers (including brokers who offer and sell Registrable Securities as principal as a result of a pledge or any failure to perform under a margin call of Common Stock), investment advisors and employees of each of them, each Person who controls any such Holder (within -7-

the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) and the officers, directors, agents and employees of each such controlling Person, to the fullest extent permitted by applicable law, from and against any and all losses, claims, damages, liabilities, costs (including, without limitation, reasonable costs of preparation and reasonable attorneys' fees) and expenses (collectively, "LOSSES"), as incurred, arising out of or relating to any untrue or alleged untrue statement of a material fact contained in the Registration Statement, any Prospectus or any form of prospectus or in any amendment or supplement thereto or in any preliminary prospectus, or arising out of or relating to any omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein (in the case of any Prospectus or form of prospectus or supplement thereto, in light of the circumstances under which they were made) not misleading, except to the extent, but only to the extent, that (1) such untrue statements or omissions are based solely upon information regarding such Holder furnished in writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder's proposed method of distribution of Registrable Securities and was reviewed and expressly approved in writing by such Holder expressly for use in the Registration Statement, such Prospectus or such form of Prospectus or in any amendment or supplement thereto (it being understood that the Holder has approved Annex A hereto for this purpose) or (2) in the case of an occurrence of an event of the type specified in Section 3(c)(ii)-(v), the use by such Holder of an outdated or defective Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated or defective and prior to the receipt by such Holder of the Advice contemplated in Section 6(d). The Company shall notify the Holders promptly of the institution, threat or assertion of any Proceeding of which the Company is aware in connection with the transactions contemplated by this Agreement. (b) INDEMNIFICATION BY HOLDERS. Each Holder shall, severally and not jointly, indemnify and hold harmless the Company, its directors, officers, agents and employees, each Person who controls the Company (within the meaning of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the directors, officers, agents or employees of such controlling Persons, to the fullest extent permitted by applicable law, from and against all Losses, as incurred, arising solely out of or based solely upon: (x) such Holder's failure to comply with the prospectus delivery requirements of the Securities Act or (y) any untrue statement of a material fact contained in any Registration Statement, any Prospectus, or any form of prospectus, or in any amendment or supplement thereto, or arising solely out of or based solely upon any omission of a material fact required to be stated therein or necessary to make the statements therein not misleading to the extent, but only to the extent, that such untrue statement or omission is contained in any information so furnished in writing by such Holder to the Company specifically for inclusion in such Registration Statement or such Prospectus or to the extent that (1) such untrue statements or omissions are based solely upon information regarding such Holder furnished in writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder's proposed method of distribution of Registrable Securities and was reviewed and expressly approved in writing by such Holder expressly for use in the Registration Statement (it being understood that the Holder has approved Annex A hereto for this purpose), such Prospectus or such form of Prospectus or in any amendment or supplement thereto or (2) in the case of an occurrence of an event of the type specified in Section 3(c)(ii)-(v), the use by such Holder of an outdated or -8-

defective Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated or defective and prior to the receipt by such Holder of the Advice contemplated in Section 6(d). In no event shall the liability of any selling Holder hereunder be greater in amount than the dollar amount of the net proceeds received by such Holder upon the sale of the Registrable Securities giving rise to such indemnification obligation. (c) CONDUCT OF INDEMNIFICATION PROCEEDINGS. If any Proceeding shall be brought or asserted against any Person entitled to indemnity hereunder (an "INDEMNIFIED PARTY"), such Indemnified Party shall promptly notify the Person from whom indemnity is sought (the "INDEMNIFYING PARTY") in writing, and the Indemnifying Party shall assume the defense thereof, including the employment of counsel reasonably satisfactory to the Indemnified Party and the payment of all fees and expenses incurred in connection with defense thereof; provided, that the failure of any Indemnified Party to give such notice shall not relieve the Indemnifying Party of its obligations or liabilities pursuant to this Agreement, except (and only) to the extent that it shall be finally determined by a court of competent jurisdiction (which determination is not subject to appeal or further review) that such failure shall have proximately and materially adversely prejudiced the Indemnifying Party. An Indemnified Party shall have the right to employ separate counsel in any such Proceeding and to participate in the defense thereof, but the fees and expenses of such counsel shall be at the expense of such Indemnified Party or Parties unless: (1) the Indemnifying Party has agreed in writing to pay such fees and expenses; (2) the Indemnifying Party shall have failed promptly to assume the defense of such Proceeding and to employ counsel reasonably satisfactory to such Indemnified Party in any such Proceeding; or (3) the named parties to any such Proceeding (including any impleaded parties) include both such Indemnified Party and the Indemnifying Party, and such Indemnified Party shall have been advised by counsel that a conflict of interest is likely to exist if the same counsel were to represent such Indemnified Party and the Indemnifying Party (in which case, if such Indemnified Party notifies the Indemnifying Party in writing that it elects to employ separate counsel at the expense of the Indemnifying Party, the Indemnifying Party shall not have the right to assume the defense thereof on behalf of the Indemnified Party and such additional counsel shall be at the expense of the Indemnifying Party). The Indemnifying Party shall not be liable for any settlement of any such Proceeding effected without its written consent, which consent shall not be unreasonably withheld. No Indemnifying Party shall, without the prior written consent of the Indemnified Party, effect any settlement of any pending Proceeding in respect of which any Indemnified Party is a party, unless such settlement includes an unconditional release of such Indemnified Party from all liability on claims that are the subject matter of such Proceeding. All fees and expenses of the Indemnified Party (including reasonable fees and expenses to the extent incurred in connection with investigating or preparing to defend such Proceeding in a manner not inconsistent with this Section) shall be paid to the Indemnified Party, as incurred, within ten Trading Days of written notice thereof to the Indemnifying Party (regardless of whether it is ultimately determined that an Indemnified Party is not entitled to indemnification hereunder; PROVIDED, that the Indemnifying Party may require such Indemnified Party to undertake to reimburse all such fees and expenses to the extent it is finally judicially determined that such Indemnified Party is not entitled to indemnification hereunder). -9-

(d) CONTRIBUTION. If a claim for indemnification under Section 5(a) or 5(b) is unavailable to an Indemnified Party (by reason of public policy or otherwise), then each Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall contribute to the amount paid or payable by such Indemnified Party as a result of such Losses, in such proportion as is appropriate to reflect the relative fault of the Indemnifying Party and Indemnified Party in connection with the actions, statements or omissions that resulted in such Losses as well as any other relevant equitable considerations. The relative fault of such Indemnifying Party and Indemnified Party shall be determined by reference to, among other things, whether any action in question, including any untrue or alleged untrue statement of a material fact or omission or alleged omission of a material fact, has been taken or made by, or relates to information supplied by, such Indemnifying Party or Indemnified Party, and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such action, statement or omission. The amount paid or payable by a party as a result of any Losses shall be deemed to include, subject to the limitations set forth in Section 5(c), any reasonable attorneys' or other reasonable fees or expenses incurred by such party in connection with any Proceeding to the extent such party would have been indemnified for such fees or expenses if the indemnification provided for in this Section was available to such party in accordance with its terms. The parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 5(d) were determined by pro rata allocation or by any other method of allocation that does not take into account the equitable considerations referred to in the immediately preceding paragraph. Notwithstanding the provisions of this Section 5(d), no Holder shall be required to contribute, in the aggregate, any amount in excess of the amount by which the proceeds actually received by such Holder from the sale of the Registrable Securities subject to the Proceeding exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. The indemnity and contribution agreements contained in this Section are in addition to any liability that the Indemnifying Parties may have to the Indemnified Parties. 6. MISCELLANEOUS (a) REMEDIES. In the event of a breach by the Company or by a Holder, of any of their obligations under this Agreement, each Holder or the Company, as the case may be, in addition to being entitled to exercise all rights granted by law and under this Agreement, including recovery of damages, will be entitled to specific performance of its rights under this Agreement. The Company and each Holder agree that monetary damages would not provide adequate compensation for any losses incurred by reason of a breach by it of any of the provisions of this Agreement and hereby further agree that, in the event of any action for specific performance in respect of such breach, it shall waive the defense that a remedy at law would be adequate. (b) OTHER REGISTRATIONS. Prior to the third month anniversary of the Effective Date, the Company shall not, directly or indirectly, file any other registration statement with the Commission with respect to any securities of the Company, except for a Form S-8 or a prospectus supplement or amendment to any current effective registration statement; provided that no such registration -10-

statement shall have the effect of registering additional shares of Common Stock originally covered by such registration statement or realizing a lower price per share than as initially disclosed in such registration statement. Except as and to the extent specified in SCHEDULE 6(B) hereto or as otherwise contemplated by the Transaction Documents or for the registration rights granted pursuant to the Concurrent Purchase Agreement (and the transactions contemplated thereby), neither the Company nor any of its security holders (other than the Holders in such capacity pursuant hereto) may include securities of the Company in the Registration Statement other than the Registrable Securities, and the Company shall not after the date hereof enter into any agreement providing any such right to any of its security holders. Except as and to the extent specified in this Agreement or in SCHEDULE 6(B) hereto, the Company has not previously entered into any agreement granting any registration rights with respect to any of its securities to any Person which have not been fully satisfied. (c) COMPLIANCE. Each Holder covenants and agrees that it will comply with the prospectus delivery requirements of the Securities Act as applicable to it in connection with sales of Registrable Securities pursuant to the Registration Statement. (d) DISCONTINUED DISPOSITION. Each Holder agrees by its acquisition of such Registrable Securities that, upon receipt of a notice from the Company of the occurrence of any event of the kind described in Section 3(c), such Holder will forthwith discontinue disposition of such Registrable Securities under the Registration Statement until such Holder's receipt of the copies of the supplemented Prospectus and/or amended Registration Statement or until it is advised in writing (the "ADVICE") by the Company that the use of the applicable Prospectus may be resumed, and, in either case, has received copies of any additional or supplemental filings that are incorporated or deemed to be incorporated by reference in such Prospectus or Registration Statement. The Company may provide appropriate stop orders to enforce the provisions of this paragraph. (e) PIGGY-BACK REGISTRATIONS. If at any time during the Effectiveness Period there is not an effective Registration Statement covering all of the Registrable Securities and the Company shall determine to prepare and file with the Commission a registration statement relating to an offering for its own account or the account of others under the Securities Act of any of its equity securities, other than on Form S-4 or Form S-8 (each as promulgated under the Securities Act) or their then equivalents relating to equity securities to be issued solely in connection with any acquisition of any entity or business or equity securities issuable in connection with stock option or other employee benefit plans, then the Company shall send to each Holder written notice of such determination and, if within fifteen days after receipt of such notice, any such Holder shall so request in writing, the Company shall include in such registration statement all or any part of such Registrable Securities such holder requests to be registered, subject to customary underwriter cutbacks applicable to all holders of registration rights. (f) AMENDMENTS AND WAIVERS. The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given, unless the same shall be in writing and signed by the Company and the Holders of at least two-thirds of the then outstanding Registrable Securities. -11-

(g) NOTICES. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone number specified in this Agreement later than 6:30 p.m. (New York City time) on any date and earlier than 11:59 p.m. (New York City time) on such date, (iii) the Trading Day following the date of mailing, if sent for next day delivery by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The address for such notices and communications shall be as follows: If to the Company: Peregrine Pharmaceuticals, Inc. 14272 Franklin Avenue Tustin, California 92780 Facsimile No.: (714) 838-5817 Attn: Chief Financial Officer With a copy to: Jeffers, Shaff & Falk, LLP 18881 Von Karman Avenue, Suite 1400 Irvine, CA 92612 Facsimile No.: (949) 660-7799 Attn: Mark R. Ziebell, Esq. If to a Purchaser: To the address set forth under such Purchaser's name on the signature pages hereto. If to any other Person who is then the registered Holder: To the address of such Holder as it appears in the stock transfer books of the Company or such other address as may be designated in writing hereafter, in the same manner, by such Person. (h) SUCCESSORS AND ASSIGNS. This Agreement shall inure to the benefit of and be binding upon the successors and permitted assigns of each of the parties and shall inure to the benefit of each Holder. The Company may not assign its rights or obligations hereunder without the prior written consent of each Holder. Each Holder may assign its rights hereunder in the manner and to the Persons as permitted under the Purchase Agreement. (i) EXECUTION AND COUNTERPARTS. This Agreement may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original and, all of which taken together shall constitute one and the same Agreement. In the event that any signature is delivered by facsimile transmission, such signature shall create a valid binding obligation of the party executing (or on whose behalf such signature is executed) the same with the same force and effect as if such facsimile signature were the original thereof. -12-

(j) GOVERNING LAW. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all Proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a party hereto or its respective affiliates, directors, officers, stockholders, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of the any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert in any Proceeding, any claim that it is not personally subject to the jurisdiction of any such court or that such Proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby. If either party shall commence a Proceeding to enforce any provisions of a Transaction Document, then the prevailing party in such Proceeding shall be reimbursed by the other party for its attorney's fees and other costs and expenses incurred with the investigation, preparation and prosecution of such Proceeding. (k) CUMULATIVE REMEDIES. The remedies provided herein are cumulative and not exclusive of any remedies provided by law. (l) SEVERABILITY. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated, and the parties hereto shall use their reasonable efforts to find and employ an alternative means to achieve the same or substantially the same result as that contemplated by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention of the parties that they would have executed the remaining terms, provisions, covenants and restrictions without including any of such that may be hereafter declared invalid, illegal, void or unenforceable. (m) HEADINGS. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof. (n) INDEPENDENT NATURE OF PURCHASERS' OBLIGATIONS AND RIGHTS. The obligation of each Purchaser hereunder is several and not joint with the obligations of any other Purchaser hereunder, and no Purchaser shall be responsible in any way for the performance of the obligations of any other -13-

Purchaser hereunder. Nothing contained herein or in any other agreement or document delivered at any closing, and no action taken by any Purchaser pursuant hereto or thereto, shall be deemed to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Purchasers are in any way acting in concert with respect to such obligations or the transactions contemplated by this Agreement. Each Purchaser shall be entitled to protect and enforce its rights, including without limitation the rights arising out of this Agreement, and it shall not be necessary for any other Purchaser to be joined as an additional party in any proceeding for such purpose. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES TO FOLLOW] -14-

IN WITNESS WHEREOF, the parties have executed this Registration Rights Agreement as of the date first written above. PEREGRINE PHARMACEUTICALS, INC By:_________________________________ Name: Title: [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK SIGNATURE PAGES OF PURCHASER TO FOLLOW]

IN WITNESS WHEREOF, the parties have executed this Registration Rights Agreement as of the date first written above. By:_________________________________ Name: Title: Address for Notice: with a copy to: Bryan Cave LLP 1290 Avenue of the Americas New York, NY 10104 Facsimile No.: (212) 541-4630 and (212) 541-1432 Attn: Eric L. Cohen, Esq. -16-

ANNEX A ------- PLAN OF DISTRIBUTION -------------------- The Selling Stockholders and any of their pledgees, assignees and successors-in-interest may, from time to time, sell any or all of their shares of Common Stock on any stock exchange, market or trading facility on which the shares are traded or in private transactions. These sales may be at fixed or negotiated prices. The Selling Stockholders may use any one or more of the following methods when selling shares: o ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; o block trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction; o purchases by a broker-dealer as principal and resale by the broker-dealer for its account; o an exchange distribution in accordance with the rules of the applicable exchange; o privately negotiated transactions; o short sales o broker-dealers may agree with the Selling Stockholders to sell a specified number of such shares at a stipulated price per share; o a combination of any such methods of sale; and o any other method permitted pursuant to applicable law. The Selling Stockholders may also sell shares under Rule 144 under the Securities Act, if available, rather than under this prospectus. Broker-dealers engaged by the Selling Stockholders may arrange for other brokers-dealers to participate in sales. Broker-dealers may receive commissions or discounts from the Selling Stockholders (or, if any broker-dealer acts as agent for the purchaser of shares, from the purchaser) in amounts to be negotiated. The Selling Stockholders do not expect these commissions and discounts to exceed what is customary in the types of transactions involved. The Selling Stockholders may from time to time pledge or grant a security interest in some or all of the shares of Common Stock or Warrants owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and sell the shares of Common Stock from time to time under this prospectus, or under an amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act of 1933 amending the list of Selling Stockholders to include the pledgee, transferee or other successors in interest as Selling Stockholders under this prospectus. -17-

The Selling Stockholders also may transfer the shares of Common Stock in other circumstances, in which case the transferees, pledgees or other successors in interest will be the selling beneficial owners for purposes of this prospectus. The Selling Stockholders and any broker-dealers or agents that are involved in selling the shares may be deemed to be "underwriters" within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act. Each Selling Stockholder has informed the Company that it does not have any agreement or understanding, directly or indirectly, with any person to distribute the Common Stock. The selling shareholders may enter into hedging transactions with third parties, which may in turn engage in short sales of the securities in the course of hedging the position they assume. The selling shareholders may also enter into short positions or other derivative transactions relating to the securities, or interests in the securities, and deliver the securities, or interests in the securities, to close out their short or other positions or otherwise settle short sales or other transactions, or loan or pledge the securities, or interests in the securities, to third parties that in turn may dispose of these securities. The Company is required to pay all fees and expenses incident to the registration of the shares. The Company has agreed to indemnify the Selling Stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act. -18-

EXHIBIT 10.85 FORM OF ZLP WARRANT NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. PEREGRINE PHARMACEUTICALS, INC. WARRANT Warrant No. CS-[ ] Date of Original Issuance: August 9, 2002 Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), hereby certifies that, for value received, ZLP MASTER FUND, LTD. or its registered assigns (the "HOLDER"), is entitled to purchase from the Company up to a total of Four Million Six Hundred Forty Eight Thousand Eight Hundred Forty Six (4,648,846) shares of common stock, $.001 par value per share (the "COMMON STOCK"), of the Company (each such share, a "WARRANT Share" and all such shares, the "WARRANT SHARES"), at an exercise price (as adjusted from time to time as provided in Section 9, the "EXERCISE PRICE") per Warrant Share equal to $0.71, at any time and from time to time from and after the 6th month anniversary of the date hereof and through and including August 8, 2006 (the "EXPIRATION Date"), and subject to the following terms and conditions: 1. DEFINITIONS. In addition to the terms defined elsewhere in this Warrant, capitalized terms that are not otherwise defined herein that are defined in the Securities Purchase Agreement, dated as of the date of original issuance of this Warrant, to which the Company and the original Holder are parties (the "PURCHASE AGREEMENT"), shall have the meanings given to such terms in the Purchase Agreement. 2. REGISTRATION OF WARRANT. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose (the "WARRANT REGISTER"), in the name of the record Holder hereof from time to time. The

Company may treat the registered Holder as the absolute owner hereof for the purpose of any exercise hereof or any distribution to the Holder, and for all other purposes, absent actual notice to the contrary. 3. REGISTRATION OF TRANSFERS. The Company shall register the transfer of any portion of this Warrant in the Warrant Register, upon surrender of this Warrant, with the Form of Assignment attached hereto duly completed and signed, to the Transfer Agent or to the Company at its address specified herein. Upon any such registration or transfer, a new warrant to purchase Common Stock, in substantially the form of this Warrant (any such new warrant, a "NEW WARRANT"), evidencing the portion of this Warrant so transferred shall be issued to the transferee and a New Warrant evidencing the remaining portion of this Warrant not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Warrant by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a holder of a Warrant. 4. EXERCISE AND DURATION. Subject to the provisions of Section 5, this Warrant shall be exercisable by the registered Holder at any time and from time to time on or after the 6th month anniversary of the date hereof to and including the Expiration Date. At 6:30 p.m., New York City time on the Expiration Date, the portion of this Warrant available for exercise and not exercised prior thereto shall be and become void and of no value. The Company may not call or redeem all or any portion of this Warrant without the prior written consent of the Holder. 5. DELIVERY OF WARRANT SHARES. (a) To effect conversions hereunder, the Holder shall not be required to physically surrender this Warrant unless the aggregate Warrant Shares represented by this Warrant is being exercised. Upon delivery of the Form of Election to Purchase to the Company (with the attached Warrant Shares Exercise Log) at its address for notice set forth in Section 13 and upon payment of the Exercise Price multiplied by the number of Warrant Shares that the Holder intends to purchase hereunder, the Company shall promptly (but in no event later than three Trading Days after the Date of Exercise (as defined herein)) issue and deliver to the Holder, a certificate for the Warrant Shares issuable upon such exercise free of restrictive legends unless otherwise required by the Purchase Agreement. The Company shall, upon request of the Holder and subsequent to the date on which a registration statement covering the resale of the Warrant Shares has been declared effective by the Securities and Exchange Commission, use its best efforts to deliver Warrant Shares hereunder electronically through the Depository Trust Corporation or another established clearing corporation performing similar functions, if available, provided, that, the Company may, but will not be required to change its transfer agent if its current transfer agent cannot deliver Warrant Shares electronically through the Depository Trust Corporation. A "DATE OF EXERCISE" means the date on which the Holder shall have delivered to the Company: (i) the Form of Election to Purchase attached hereto (with the Warrant Exercise Log attached to it), appropriately completed and duly signed and (ii) payment of the Exercise Price for the number of Warrant Shares so indicated by the Holder to be purchased (and for purposes of this clause (ii), the parties agree that the giving to the Company of the federal wire reference number in connection with wire transfers shall constitute the payment of the Exercise Price). -2-

(b) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), then the Holder will have the right to rescind such exercise. (c) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), and if after such third Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a "BUY-IN"), then the Company shall (1) pay in cash to the Holder the amount by which (x) the Holder's total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (A) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue by (B) the closing bid price of the Common Stock at the time of the obligation giving rise to such purchase obligation and (2) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with a market price on the date of exercise totaled $10,000, under clause (1) of the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In. (d) The Company's obligations to issue and deliver Warrant Shares in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such obligation of the Company to the Holder in connection with the issuance of Warrant Shares. Nothing herein shall limit a Holder's right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company's failure to timely deliver certificates representing shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof. -3-

6. CHARGES, TAXES AND EXPENSES. Issuance and delivery of certificates for shares of Common Stock upon exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax, withholding tax (unless required by law), transfer agent fee or other incidental tax or expense in respect of the issuance of such certificates, all of which taxes and expenses shall be paid by the Company; provided, however, that the Company shall not be required to pay any tax which may be payable in respect of any transfer involved in the registration of any certificates for Warrant Shares or Warrants in a name other than that of the Holder. The Holder shall be responsible for all income and other tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof. 7. REPLACEMENT OF WARRANT. If this Warrant is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation hereof, or in lieu of and substitution for this Warrant, a New Warrant, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. Applicants for a New Warrant under such circumstances shall also comply with such other reasonable regulations and procedures and pay such other reasonable third-party costs as the Company may prescribe. 8. RESERVATION OF WARRANT SHARES. The Company covenants that it will at all times reserve and keep available out of the aggregate of its authorized but unissued and otherwise unreserved Common Stock, solely for the purpose of enabling it to issue Warrant Shares upon exercise of this Warrant as herein provided, the number of Warrant Shares which are then issuable and deliverable upon the exercise of this entire Warrant. The Company covenants that all Warrant Shares so issuable and deliverable shall, upon issuance and the payment of the applicable Exercise Price in accordance with the terms hereof, be duly and validly authorized, issued and fully paid and nonassessable. 9. CERTAIN ADJUSTMENTS. The Exercise Price and number of Warrant Shares issuable upon exercise of this Warrant are subject to adjustment from time to time as set forth in this Section 9. (a) STOCK DIVIDENDS AND SPLITS. If the Company, at any time while this Warrant is outstanding, (i) pays a stock dividend on its Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into a larger number of shares, or (iii) combines outstanding shares of Common Stock into a smaller number of shares, then in each such case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock outstanding immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately after such event. (b) PRO RATA DISTRIBUTIONS. If the Company, at any time while this Warrant is outstanding, distributes to all holders of Common Stock (i) evidences of its indebtedness, (ii) any security (other than a distribution of Common Stock covered by the preceding paragraph), (iii) rights or warrants to subscribe for or purchase any security, or (iv) any other asset (in each case, "DISTRIBUTED PROPERTY"), then, at the request of any Holder delivered on the record date fixed for determination of stockholders entitled to receive such -4-

distribution, the Company will deliver to such Holder, within five Trading Days after such request (or, if later, on the effective date of such distribution), the Distributed Property that such Holder would have been entitled to receive in respect of the Warrant Shares for which such Holder's Warrant could have been exercised immediately prior to such record date. If such Distributed Property is not delivered to a Holder pursuant to the preceding sentence, then upon any exercise of the Warrant that occurs after such record date, such Holder shall be entitled to receive, in addition to the Warrant Shares otherwise issuable upon such exercise, the Distributed Property that such Holder would have been entitled to receive in respect of such number of Warrant Shares had the Holder been the record holder of such Warrant Shares immediately prior to such record date. (c) FUNDAMENTAL TRANSACTIONS. If, at any time while this Warrant is outstanding: (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then the Holder shall have the right thereafter to receive, upon exercise of this Warrant, the same amount and kind of securities, cash or property as it would have been entitled to receive upon the occurrence of such Fundamental Transaction if it had been, immediately prior to such Fundamental Transaction, the holder of the number of Warrant Shares then issuable upon exercise in full of this Warrant (the "ALTERNATE CONSIDERATION"). For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental Transaction. At the Holder's option and request, any successor to the Company or surviving entity in such Fundamental Transaction shall purchase the Warrant from the Holder for a purchase price, payable in cash within five Trading Days after such request (or, if later, on the effective date of the Fundamental Transaction), equal to the Black Scholes value of the remaining unexercised portion of this Warrant on the date of the request, provided, that the successor to the Company or surviving entity in such Fundamental Transaction shall be entitled, in lieu of paying the aforementioned purchase price, to issue to the Holder a new warrant substantially in the form of this Warrant and consistent with the foregoing provisions and omitting subsection 9(d) below and evidencing the Holder's right to purchase the Alternate Consideration for the aggregate Exercise Price upon exercise thereof. The terms of any agreement pursuant to which a Fundamental Transaction is effected shall include terms requiring any such successor or surviving entity to comply with the provisions of this paragraph (c) and insuring that the Warrant (or any such replacement security) will be similarly adjusted upon any subsequent transaction analogous to a Fundamental Transaction. -5-

(d) SUBSEQUENT EQUITY SALES. (i) If the Company or any subsidiary thereof, at any time during the period between the Original Issue Date and the 18th month anniversary of the Effective Date (provided that such period shall be extended by the number of days in which the Registration Statement is not effective or the prospectus included in the Registration Statement may not be used by the selling stockholders thereunder for the resale of the shares of Common Stock registered thereunder), as applicable with respect to Common Stock Equivalents (as defined below), at any time while this Warrant is outstanding, shall issue shares of Common Stock or rights, warrants, options or other securities or debt that is convertible into or exchangeable for shares of Common Stock ("COMMON STOCK Equivalents") entitling any Person to acquire shares of Common Stock, at a price per share less than the Exercise Price (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Exercise Price, such issuance shall be deemed to have occurred for less than the Exercise Price), then, at the option of the Holder for such exercises as it shall indicate, the Exercise Price shall be adjusted to equal the conversion, exchange or purchase price for such Common Stock or Common Stock Equivalents (including any reset provisions thereof) at issue and which adjusted Exercise Price shall continue for as long as this Warrants remain outstanding. Such adjustment shall be made whenever such Common Stock or Common Stock Equivalents are issued. The Company shall notify the Holder in writing, no later than the Trading Day following the issuance of any Common Stock or Common Stock Equivalent subject to this section, indicating therein the applicable issuance price, or of applicable reset price, exchange price, conversion price and other pricing terms. (ii) If, at any time while this Warrant is outstanding, the Company or any Subsidiary issues Common Stock Equivalents at a price per share that floats or resets or otherwise varies or is subject to adjustment based on market prices of the Common Stock (a "FLOATING PRICE SECURITY"), then for purposes of applying the preceding paragraph in connection with any subsequent exercise, the Exercise Price will be determined separately on each Exercise Date and will be deemed to equal the lowest price per share at which any holder of such Floating Price Security is entitled to acquire shares of Common Stock on such Exercise Date (regardless of whether any such holder actually acquires any shares on such date). (iii) Notwithstanding the foregoing, no adjustment will be made under this Section 6(d)(iii) as a result of: (i) any grant of an option or warrant for Common Stock or issuance of any shares of Common Stock upon the exercise of any options or warrants to employees, officers and directors of or consultants to the Company pursuant to any stock option plan, employee stock purchase plan or similar plan or consulting arrangement approved by the Company's board of directors or (ii) any rights or agreements to purchase Common Stock or Common Stock Equivalents outstanding on the date hereof and as specified in SCHEDULE 3.1(G) to the Purchase Agreement (but not as to any amendments or other modifications to the number of shares of Common Stock issuable thereunder, the terms set forth therein, or the exercise price set forth therein) or (iii) the issuance of shares of Common Stock in connection with a Strategic Transaction (as defined in the Purchase Agreement) or (iv) the issuance of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to -6-

any Approved Purchaser (as defined in the Purchase Agreement) pursuant to Registration Statement No. 333-71086 or (v) the issuance of Common Stock pursuant to the Transaction Documents or (vi) the issuance of Common Stock pursuant to the Concurrent Purchase Agreement (as defined in the Purchase Agreement) or the transactions contemplated thereby. (iv) NUMBER OF WARRANT SHARES. Simultaneously with any adjustment to the Exercise Price pursuant to paragraphs (a) or (b) of this Section, the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment. (e) CALCULATIONS. All calculations under this SECTION 9 shall be made to the nearest cent or the nearest 1/100th of a share, as applicable. The number of shares of Common Stock outstanding at any given time shall not include shares owned or held by or for the account of the Company, and the disposition of any such shares shall be considered an issue or sale of Common Stock. (f) NOTICE OF ADJUSTMENTS. Upon the occurrence of each adjustment pursuant to this SECTION 9, the Company at its expense will promptly compute such adjustment in accordance with the terms of this Warrant and prepare a certificate setting forth such adjustment, including a statement of the adjusted Exercise Price and adjusted number or type of Warrant Shares or other securities issuable upon exercise of this Warrant (as applicable), describing the transactions giving rise to such adjustments and showing in detail the facts upon which such adjustment is based. Upon written request, the Company will promptly deliver a copy of each such certificate to the Holder and to the Company's Transfer Agent. (g) NOTICE OF CORPORATE EVENTS. If the Company (i) declares a dividend or any other distribution of cash, securities or other property in respect of its Common Stock, including without limitation any granting of rights or warrants to subscribe for or purchase any capital stock of the Company or any Subsidiary, (ii) authorizes or approves, enters into any agreement providing for or solicits stockholder approval for any Fundamental Transaction or (iii) authorizes the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder a notice describing the material terms and conditions of such transaction, at least 20 calendar days prior to the applicable record or effective date on which a Person would need to hold Common Stock in order to participate in or vote with respect to such transaction, and the Company will take all steps reasonably necessary in order to insure that the Holder is given the practical opportunity to exercise this Warrant prior to such time so as to participate in or vote with respect to such transaction; provided, however, that the failure to deliver such notice or any defect therein shall not affect the validity of the corporate action required to be described in such notice. 10. PAYMENT OF EXERCISE PRICE. The Holder shall pay the Exercise Price in one of the following manners: (a) CASH EXERCISE. The Holder may deliver immediately available funds; or -7-

(b) CASHLESS EXERCISE. At any time after the Effectiveness Date (as defined in the Registration Rights Agreement (as defined in the Purchase Agreement)), when such Registration Statement (as defined in the Registration Rights Agreement) covering the resale of the Warrant Shares and naming the Holder as a selling stockholder thereunder or the prospectus included therein is not then effective, the Holder may surrender this Warrant to the Company together with a notice of cashless exercise, in which event the Company shall issue to the Holder the number of Warrant Shares determined as follows: X = Y [(A-B)/A] where: X = the number of Warrant Shares to be issued to the Holder. Y = the number of Warrant Shares with respect to which this Warrant is being exercised. A = the average of the closing bid prices for the five Trading Days immediately prior to (but not including) the Exercise Date. B = the Exercise Price. For purposes of Rule 144 promulgated under the Securities Act, it is intended, understood and acknowledged that the Warrant Shares issued in a cashless exercise transaction shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the date this Warrant was originally issued pursuant to the Purchase Agreement. 11. LIMITATIONS ON EXERCISE. (a) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 4.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. The provisions of this Section may be waived by a Holder (but only as to itself and not to any other Holder) upon not less than 61 days' prior notice to the Company. Other Holders shall be unaffected by any such waiver. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. -8-

(b) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 9.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. (c) If the Company has not obtained the Shareholder Approval (as defined below), then the Company may not issue in excess of 22,054,931 shares of Common Stock less: (A) any shares of Common Stock issued on the Closing Date pursuant to the Purchase Agreement and (B) any shares of Common Stock issued upon exercise of this Warrant, (C) any shares of Common Stock issued pursuant to the Adjustable Warrants (as defined in the Purchase Agreement), (D) any shares of Common Stock issued pursuant to the Concurrent Purchase Agreement (and the transactions contemplated thereby, including upon the conversion or exercise of the debentures and warrants, as the case may be), and (E) any sales of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to an Approved Purchaser (as defined in the Purchase Agreement) subsequent to the date hereof pursuant to the Company's Registration Statement No. 333-71086 (such number of shares, as adjusted from time to time, the "ISSUABLE MAXIMUM"). The Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained by dividing (x) the number of shares of Common Stock issued and sold to the Holder on the Closing Date by (y) the number of shares of Common Stock issued and sold by the Company on the Closing Date. If the Holder shall no longer hold the Warrant due to exercise or cancellation of the Warrant, then the Holder's remaining portion of the Issuable Maximum shall be allocated pro-rata among the remaining Holders. If on any Date of Exercise: (A) the aggregate number of shares of Common Stock that would then be issuable upon exercise in full of this Warrant would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the vote of shareholders (the "SHAREHOLDER APPROVAL"), if any, as may be required by the applicable rules and regulations of the Nasdaq SmallCap Market (or any successor entity) applicable to approve the issuance of shares of Common Stock in excess of the Issuable Maximum pursuant to the terms hereof, then the Company shall issue to the Holder a number of shares of Common Stock equal to the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum, with respect to the remainder of -9-

the Warrant Shares then issuable under the Warrant for which an exercise in accordance with the applicable exercise price would result in an issuance of shares of Common Stock in excess of the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum (the "EXCESS WARRANT SHARES"), the Company shall use its best efforts to obtain the Shareholder Approval applicable to such issuance as soon as is possible, but in any event not later than the 90th day after such request. In connection therewith, the board of directors of the Company shall: (a) adopt proper resolutions authorizing such increase in such authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain the Shareholder Approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 90th day after the delivery of the proxy materials relating to such meeting). The Company and the Holder understand and agree that shares of Common Stock issued to and then held by the Holder as a result of exercise of this Warrant shall not be entitled to cast votes on any resolution to obtain Shareholder Approval pursuant hereto. If the Company shall have used its best efforts to obtain the Shareholder Approval but nevertheless failed to obtain such Shareholder Approval, then this Warrant shall be cancelled and of no further force and effect. 12. NO FRACTIONAL SHARES. No fractional shares of Warrant Shares will be issued in connection with any exercise of this Warrant. In lieu of any fractional shares which would, otherwise be issuable, the Company shall pay cash equal to the product of such fraction multiplied by the closing bid price of one Warrant Share as reported on the Nasdaq National Market on the date of exercise. 13. NOTICES. Any and all notices or other communications or deliveries hereunder (including without limitation any Exercise Notice) shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the next Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section on a day that is not a Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The addresses for such communications shall be: (i) if to the Company, to Peregrine Pharmaceuticals, Inc., 14272 Franklin Avenue, Tustin, California 92780, Facsimile No.: (714) 838-5817, Attn: Chief Financial Officer, or (ii) if to the Holder, to the address or facsimile number appearing on the Warrant Register or such other address or facsimile number as the Holder may provide to the Company in accordance with this Section. 14. WARRANT AGENT. The Company shall serve as warrant agent under this Warrant. Upon 30 days' notice to the Holder, the Company may appoint a new warrant agent. Any corporation into which the Company or any new warrant agent may be merged or any corporation resulting from any consolidation to which the Company or any new warrant agent shall be a party or any corporation to which the Company or any new warrant agent transfers substantially all of its corporate trust or shareholders services business shall be a successor warrant agent under this Warrant without any further act. Any such successor warrant agent shall promptly cause notice of its succession as warrant agent to be mailed (by first class mail, postage prepaid) to the Holder at the Holder's last address as shown on the Warrant Register. -10-

15. MISCELLANEOUS. (a) This Warrant shall be binding on and inure to the benefit of the parties hereto and their respective successors and assigns. Subject to the preceding sentence, nothing in this Warrant shall be construed to give to any Person other than the Company and the Holder any legal or equitable right, remedy or cause of action under this Warrant. This Warrant may be amended only in writing signed by the Company and the Holder and their successors and assigns. (b) All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Warrant (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of this Warrant), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Warrant and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto (including its affiliates, agents, officers, directors and employees) hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Warrant or the transactions contemplated hereby. If either party shall commence an action or proceeding to enforce any provisions of this Warrant, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. (c) The headings herein are for convenience only, do not constitute a part of this Warrant and shall not be deemed to limit or affect any of the provisions hereof. (d) In case any one or more of the provisions of this Warrant shall be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Warrant shall not in any way be affected or impaired thereby and the parties will attempt in good faith to agree upon a valid and enforceable provision which shall be a commercially reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Warrant. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK, SIGNATURE PAGE FOLLOWS] -11-

IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed by its authorized officer as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: -------------------------------- Name: Paul Lytle Title: V.P. Finance & Accounting -12-

FORM OF ELECTION TO PURCHASE To Peregrine Pharmaceuticals, Inc.: In accordance with Warrant No. ______ issued to the undersigned, the undersigned hereby elects to purchase _____________ shares of common stock ("COMMON STOCK"), $.001 par value per share, of Peregrine Pharmaceuticals, Inc., and, if such Holder is not utilizing the cashless exercise provisions set forth in this Warrant, encloses herewith $________ in cash, certified or official bank check or checks, which sum represents the aggregate Exercise Price (as defined in the Warrant) for the number of shares of Common Stock to which this Form of Election to Purchase relates. By its delivery of this Form of Election To Purchase, the Holder represents and warrants to the Company that in giving effect to the exercise evidenced hereby the Holder will not beneficially own in excess of the number of shares of Common Stock (determined in accordance with Section 13(d) of the Securities Exchange Act of 1934) permitted to be owned under Section 11 of this Warrant to which this notice relates. The undersigned requests that certificates for the shares of Common Stock issuable upon this exercise be issued in the name of PLEASE INSERT SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER (Please print name and address)

WARRANT SHARES EXERCISE LOG --------------------------- - ---------------- ----------------- ----------------- ----------------- Date Number of Warrant Number of Warrant Number of Warrant Shares Available Shares Exercised Shares Remaining to be Exercised to be Exercised - ---------------- ----------------- ----------------- ----------------- - ---------------- ----------------- ----------------- -----------------

FORM OF ASSIGNMENT [To be completed and signed only upon transfer of Warrant] FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto ________________________________ the right represented by the within Warrant to purchase ____________ shares of Common Stock of Peregrine Pharmaceuticals, Inc., to which the within Warrant relates and appoints ________________ attorney to transfer said right on the books of Peregrine Pharmaceuticals, Inc., with full power of substitution in the premises. Dated: _______________, ____ _____________________________________________ (Signature must conform in all respects to name of holder as specified on the face of the Warrant) _____________________________________________ Address of Transferee _____________________________________________ _____________________________________________ In the presence of: ________________________

EXHIBIT 10.86 FORM OF ZLP ADJUSTMENT WARRANT NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. PEREGRINE PHARMACEUTICALS, INC. WARRANT Warrant No. ADJ-[ ] Date of Original Issuance: August 9, 2002 Peregrine Pharmaceuticals, Inc., a Delaware corporation (the "COMPANY"), hereby certifies that, for value received, ZLP MASTER FUND LTD. or its registered assigns (the "HOLDER"), is entitled to purchase from the Company up to a number of shares of common stock, $.001 par value per share (the "COMMON STOCK"), of the Company (each such share, a "WARRANT SHARE" and all such shares, the "WARRANT SHARES"), determined pursuant to Section 4(a) hereof (as adjusted from time to time as provided in Section 9), at an exercise price (the "EXERCISE PRICE") per Warrant Share equal to the par value of the Common Stock of the Company, at any time and from time to time from and after the 6th month anniversary of the date hereof and through and including August 8, 2006 (the "EXPIRATION DATE"), and subject to the following terms and conditions: 1. DEFINITIONS. In addition to the terms defined elsewhere in this Warrant, capitalized terms that are not otherwise defined herein that are defined in the Securities Purchase Agreement, dated as of the date of original issuance of this Warrant, to which the Company and the original Holder are parties (the "PURCHASE AGREEMENT"), shall have the meanings given to such terms in the Purchase Agreement. 2. REGISTRATION OF WARRANT. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose (the "WARRANT

REGISTER"), in the name of the record Holder from time to time. The Company may treat the registered Holder as the absolute owner of this Warrant for all purposes, absent actual notice to the contrary. 3. REGISTRATION OF TRANSFERS. The Company shall register the transfer of any portion of this Warrant in the Warrant Register, upon surrender of this Warrant, with the Form of Assignment attached hereto duly completed and signed, to the Company at its address specified herein. Upon any such registration or transfer, a new warrant to purchase Common Stock, in substantially the form of this Warrant (any such new warrant, a "NEW WARRANT"), evidencing the portion of this Warrant so transferred shall be issued to the transferee and a New Warrant evidencing the remaining portion of this Warrant not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Warrant by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a Holder. 4. EXERCISE AND DURATION. (a) The number of Warrant Shares subject to exercise pursuant to the terms hereof shall be equal determined in accordance with Section 4.6 of the Purchase Agreement and shall be set forth from time to time on the attached Warrant Shares Exercise Log). (b) Subject to the provisions of Section 4, this Warrant shall be exercisable by the registered Holder at any time and from time to time on or after the 6th month anniversary of the date hereof to and including the Expiration Date. At 6:30 p.m., New York City time on the Expiration Date, the portion of this Warrant available for exercise and not exercised prior thereto shall be and become void and of no value. The Company may not call or redeem all or any portion of this Warrant without the prior written consent of the Holder. 5. DELIVERY OF WARRANT SHARES. (a) To effect conversions hereunder, the Holder shall not be required to physically surrender this Warrant unless the aggregate Warrant Shares represented by this Warrant is being exercised. Upon delivery of the Form of Election to Purchase to the Company (with the attached Warrant Shares Exercise Log) at its address for notice set forth in Section 13 and upon payment of the Exercise Price multiplied by the number of Warrant Shares that the Holder intends to purchase hereunder, the Company shall promptly (but in no event later than three Trading Days after the Date of Exercise (as defined herein)) issue and deliver to the Holder, a certificate for the Warrant Shares issuable upon such exercise free of restrictive legends unless otherwise required by the Purchase Agreement. The Company shall, upon request of the Holder and subsequent to the date on which a registration statement covering the resale of the Warrant Shares has been declared effective by the Securities and Exchange Commission, use its best efforts to deliver Warrant Shares hereunder electronically through the Depository Trust Corporation or another established clearing corporation performing similar functions, if available, provided, that, the Company may, but will not be required to change its transfer agent if its current transfer agent cannot deliver Warrant Shares electronically through the Depository Trust Corporation. A "DATE OF EXERCISE" means the date on which the Holder shall have delivered to the Company: (i) the Form of Election to Purchase attached hereto -2-

(with the Warrant Exercise Log attached to it), appropriately completed and duly signed and (ii) payment of the Exercise Price for the number of Warrant Shares so indicated by the Holder to be purchased. (b) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), then the Holder will have the right to rescind such exercise. (c) If by the third Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 5(a), and if after such third Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a "BUY-IN"), then the Company shall (1) pay in cash to the Holder the amount by which (x) the Holder's total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (A) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue by (B) the closing sales price of the Common Stock at the time of the obligation giving rise to such purchase obligation and (2) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with a market price on the date of exercise totaled $10,000, under clause (1) of the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In. (d) The Company's obligations to issue and deliver Warrant Shares in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such obligation of the Company to the Holder in connection with the issuance of Warrant Shares. Nothing herein shall limit a Holder's right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company's failure to timely deliver certificates representing shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof. 6. CHARGES, TAXES AND EXPENSES. Issuance and delivery of certificates for shares of Common Stock upon exercise of this Warrant shall be made without charge to the Holder for any issue or transfer tax, withholding tax, transfer agent fee or other incidental tax or expense in respect of the issuance of such certificates, all of which taxes and expenses shall be paid by the Company; provided, however, that the Company shall not be required to pay any tax which may be payable in respect of any transfer involved in the registration of any certificates for Warrant Shares or Warrants in a name other than that of the -3-

Holder. The Holder shall be responsible for all other tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof. 7. REPLACEMENT OF WARRANT. If this Warrant is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation hereof, or in lieu of and substitution for this Warrant, a New Warrant, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. Applicants for a New Warrant under such circumstances shall also comply with such other reasonable regulations and procedures and pay such other reasonable third-party costs as the Company may prescribe. 8. RESERVATION OF WARRANT SHARES. The Company covenants that it will at all times reserve and keep available out of the aggregate of its authorized but unissued and otherwise unreserved Common Stock, solely for the purpose of enabling it to issue Warrant Shares upon exercise of this Warrant as herein provided, the number of Warrant Shares which are then issuable and deliverable upon the exercise of this entire Warrant. The Company covenants that all Warrant Shares so issuable and deliverable shall, upon issuance and the payment of the applicable Exercise Price in accordance with the terms hereof, be duly and validly authorized, issued and fully paid and nonassessable. 9. CERTAIN ADJUSTMENTS. The number of Warrant Shares issuable upon exercise of this Warrant is subject to adjustment from time to time as set forth in this Section 9. (a) STOCK DIVIDENDS AND SPLITS. If the Company, at any time while this Warrant is outstanding, (i) pays a stock dividend on its Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into a larger number of shares, or (iii) combines outstanding shares of Common Stock into a smaller number of shares, then in each such case the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment. (b) CALCULATIONS. All calculations under this SECTION 9 shall be made to the nearest cent or the nearest 1/100th of a share, as applicable. The number of shares of Common Stock outstanding at any given time shall not include shares owned or held by or for the account of the Company, and the disposition of any such shares shall be considered an issue or sale of Common Stock. (c) NOTICE OF ADJUSTMENTS. Upon the occurrence of each adjustment pursuant to this SECTION 9, the Company at its expense will promptly compute such adjustment in accordance with the terms of this Warrant and prepare a certificate setting forth such adjustment, including a statement of the adjusted Exercise Price and adjusted number or type of Warrant Shares or other securities issuable upon exercise of this Warrant (as applicable), describing the -4-

transactions giving rise to such adjustments and showing in detail the facts upon which such adjustment is based. Upon written request, the Company will promptly deliver a copy of each such certificate to the Holder and to the Company's Transfer Agent. (d) NOTICE OF CORPORATE EVENTS. If the Company (i) declares a dividend or any other distribution of cash, securities or other property in respect of its Common Stock, including without limitation any granting of rights or warrants to subscribe for or purchase any capital stock of the Company or any Subsidiary or (ii) authorizes the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder a notice describing the material terms and conditions of such transaction, at least 20 calendar days prior to the applicable record or effective date on which a Person would need to hold Common Stock in order to participate in or vote with respect to such transaction, and the Company will take all steps reasonably necessary in order to insure that the Holder is given the practical opportunity to exercise this Warrant prior to such time so as to participate in or vote with respect to such transaction; provided, however, that the failure to deliver such notice or any defect therein shall not affect the validity of the corporate action required to be described in such notice. (e) FUNDAMENTAL TRANSACTION. If, at any time while this Warrant is outstanding: (i) the Company effects any merger or consolidation of the Company with or into another Person, (ii) the Company effects any sale of all or substantially all of its assets in one or a series of related transactions, (iii) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (iv) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property (in any such case, a "FUNDAMENTAL TRANSACTION"), then the Holder shall have the right thereafter to receive, upon exercise of this Warrant, the same amount and kind of securities, cash or property as it would have been entitled to receive upon the occurrence of such Fundamental Transaction if it had been, immediately prior to such Fundamental Transaction, the holder of the number of Warrant Shares then issuable upon exercise in full of this Warrant (the "ALTERNATE CONSIDERATION"). For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental Transaction. 10. PAYMENT OF EXERCISE PRICE. The Holder shall pay the Exercise Price by surrendering this Warrant to the Company together with a notice of cashless exercise, in which event the Company shall issue to the Holder the number of Warrant Shares determined as follows X = Y [(A-B)/A] where: -5-

X = the number of Warrant Shares to be issued to the Holder. Y = the number of Warrant Shares with respect to which this Warrant is being exercised. A = the average of the closing bid prices for the five Trading Days immediately prior to (but not including) the Exercise Date. B = the Exercise Price. For purposes of Rule 144 promulgated under the Securities Act, it is intended, understood and acknowledged that the Warrant Shares issued in a cashless exercise transaction shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the date this Warrant was originally issued pursuant to the Purchase Agreement. 11. LIMITATIONS ON EXERCISE. (a) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 4.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. The provisions of this Section may be waived by a Holder (but only as to itself and not to any other Holder) upon not less than 61 days' prior notice to the Company. Other Holders shall be unaffected by any such waiver. (b) Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its Affiliates and any other Persons whose beneficial ownership of Common Stock would be aggregated with the Holder's for purposes of Section 13(d) of the Exchange Act, does not exceed 9.999% of the total number of issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Each delivery of an Exercise Notice hereunder will constitute a representation by the Holder that it has evaluated the limitation set forth in this paragraph and determined that issuance of the full number of Warrant Shares requested in such Exercise Notice is permitted under this paragraph. -6-

(c) If the Company has not obtained the Shareholder Approval (as defined below), then the Company may not issue in excess of 22,054,931 shares of Common Stock less: (A) any shares of Common Stock issued on the Closing Date pursuant to the Purchase Agreement and (B) any shares of Common Stock issued upon exercise of this Warrant, (C) any shares of Common Stock issued pursuant to the Adjustable Warrants (as defined in the Purchase Agreement), (D) any shares of Common Stock issued pursuant to the Concurrent Purchase Agreement (and the transactions contemplated thereby, including upon the conversion or exercise of the debentures and warrants, as the case may be) and (E) any sales of up to 2,900,000 shares of Common Stock (as adjusted for stock splits, reverse stock splits, combinations and other similar transactions) to an Approved Purchaser (as defined in the Purchase Agreement) subsequent to the date hereof pursuant to the Company's Registration Statement No. 333-71086 (such number of shares, as adjusted from time to time, the "ISSUABLE MAXIMUM"). The Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained by dividing (x) the number of shares of Common Stock issued and sold to the Holder on the Closing Date by (y) the number of shares of Common Stock issued and sold by the Company on the Closing Date. If the Holder shall no longer hold the Warrant due to exercise or cancellation of the Warrant, then the Holder's remaining portion of the Issuable Maximum shall be allocated pro-rata among the remaining Holders. If on any Date of Exercise: (A) the aggregate number of shares of Common Stock that would then be issuable upon exercise in full of this Warrant would exceed the Issuable Maximum, and (B) the Company shall not have previously obtained the vote of shareholders (the "SHAREHOLDER APPROVAL"), if any, as may be required by the applicable rules and regulations of the Nasdaq SmallCap Market (or any successor entity) applicable to approve the issuance of shares of Common Stock in excess of the Issuable Maximum pursuant to the terms hereof, then the Company shall issue to the Holder a number of shares of Common Stock equal to the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum, with respect to the remainder of the Warrant Shares then issuable under the Warrant for which an exercise in accordance with the applicable exercise price would result in an issuance of shares of Common Stock in excess of the Holder's pro-rata portion (which shall be calculated pursuant to the terms hereof) of the Issuable Maximum (the "EXCESS WARRANT Shares"), the Company shall use its best efforts to obtain the Shareholder Approval applicable to such issuance as soon as is possible, but in any event not later than the 90th day after such request. In connection therewith, the board of directors of the Company shall: (a) adopt proper resolutions authorizing such increase in such authorized shares, (b) recommend to and otherwise use its best efforts to promptly and duly obtain the Shareholder Approval to carry out such resolutions (and hold a special meeting of the stockholders as soon as practicable, but in any event not later than the 90th day after the delivery of the proxy materials relating to such meeting). The Company and the Holder understand and agree that shares of Common Stock issued to and then held by the Holder as a result of exercise of this Warrant shall not be entitled to cast votes on any resolution to obtain Shareholder Approval pursuant hereto. If the Company shall have used its best efforts to obtain the Shareholder Approval but nevertheless failed to obtain such Shareholder Approval, then this Warrant shall be cancelled and of no further force and effect. (d) The provisions set forth in this Section 11 shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company as contemplated in Section 9 of this Warrant. -7-

12. NO FRACTIONAL SHARES. No fractional shares of Warrant Shares will be issued in connection with any exercise of this Warrant. In lieu of any fractional shares which would, otherwise be issuable, the Company shall pay cash equal to the product of such fraction multiplied by the closing bid price of one Warrant Share as reported on the Nasdaq SmallCap Market on the date of exercise. 13. NOTICES. Any and all notices or other communications or deliveries hereunder (including without limitation any Exercise Notice) shall be in writing and shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (ii) the next Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section on a day that is not a Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day, (iii) the Trading Day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required to be given. The addresses for such communications shall be: (i) if to the Company, to Peregrine Pharmaceuticals, Inc., 14272 Franklin Avenue, Tustin, California 92780, Facsimile No.: (714) 838-9433, Attn: Chief Financial Officer, or (ii) if to the Holder, to the address or facsimile number appearing on the Warrant Register or such other address or facsimile number as the Holder may provide to the Company in accordance with this Section. 14. WARRANT AGENT. The Company shall serve as warrant agent under this Warrant. Upon 30 days' notice to the Holder, the Company may appoint a new warrant agent. Any corporation into which the Company or any new warrant agent may be merged or any corporation resulting from any consolidation to which the Company or any new warrant agent shall be a party or any corporation to which the Company or any new warrant agent transfers substantially all of its corporate trust or shareholders services business shall be a successor warrant agent under this Warrant without any further act. Any such successor warrant agent shall promptly cause notice of its succession as warrant agent to be mailed (by first class mail, postage prepaid) to the Holder at the Holder's last address as shown on the Warrant Register. 15. MISCELLANEOUS. (a) This Warrant shall be binding on and inure to the benefit of the parties hereto and their respective successors and assigns. Subject to the preceding sentence, nothing in this Warrant shall be construed to give to any Person other than the Company and the Holder any legal or equitable right, remedy or cause of action under this Warrant. This Warrant may be amended only in writing signed by the Company and the Holder and their successors and assigns. (b) All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement -8-

and defense of the transactions contemplated by this Warrant (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the state and federal courts sitting in the City of New York, Borough of Manhattan. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of this Warrant), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper. Each party hereto hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Warrant and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Each party hereto (including its affiliates, agents, officers, directors and employees) hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Warrant or the transactions contemplated hereby. If either party shall commence an action or proceeding to enforce any provisions of this Warrant, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. (c) The headings herein are for convenience only, do not constitute a part of this Warrant and shall not be deemed to limit or affect any of the provisions hereof. (d) In case any one or more of the provisions of this Warrant shall be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Warrant shall not in any way be affected or impaired thereby and the parties will attempt in good faith to agree upon a valid and enforceable provision which shall be a commercially reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Warrant. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK, SIGNATURE PAGE FOLLOWS] -9-

IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed by its authorized officer as of the date first indicated above. PEREGRINE PHARMACEUTICALS, INC. By: -------------------------------- Name: Paul Lytle Title: V.P. Finance & Accounting -10-

FORM OF ELECTION TO PURCHASE To Peregrine Pharmaceuticals, Inc.: In accordance with Warrant No. ________ issued to the undersigned, the undersigned hereby elects to purchase _____________ shares of common stock ("COMMON STOCK"), $.001 par value per share, of Peregrine Pharmaceuticals, Inc., by means of the cashless exercise provision set forth in this Warrant. By its delivery of this Form of Election To Purchase, the Holder represents and warrants to the Company that in giving effect to the exercise evidenced hereby the Holder will not beneficially own in excess of the number of shares of Common Stock (determined in accordance with Section 13(d) of the Securities Exchange Act of 1934) permitted to be owned under Section 11 of this Warrant to which this notice relates. The undersigned requests that certificates for the shares of Common Stock issuable upon this exercise be issued in the name of PLEASE INSERT SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER (Please print name and address)

WARRANT SHARES EXERCISE LOG --------------------------- - ---------------- ----------------- ----------------- ----------------- Date Number of Warrant Number of Warrant Number of Warrant Shares Available Shares Exercised Shares Remaining to be Exercised to be Exercised - ---------------- ----------------- ----------------- ----------------- - ---------------- ----------------- ----------------- -----------------

FORM OF ASSIGNMENT [To be completed and signed only upon transfer of Warrant] FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto ________________________________ the right represented by the within Warrant to purchase ____________ shares of Common Stock of Peregrine Pharmaceuticals, Inc., to which the within Warrant relates and appoints ________________ attorney to transfer said right on the books of Peregrine Pharmaceuticals, Inc., with full power of substitution in the premises. Dated: _______________, ____ _____________________________________________ (Signature must conform in all respects to name of holder as specified on the face of the Warrant) _____________________________________________ Address of Transferee _____________________________________________ _____________________________________________ In the presence of: __________________________

EXHIBIT 23.2 CONSENT OF INDEPENDENT AUDITORS We consent to the reference to our firm under the caption "Experts" in the Registration Statement (Form S-3) and related Prospectus of Peregrine Pharmaceuticals, Inc. for the registration of 22,486,233 shares of its common stock and to the incorporation by reference therein of our report dated June 21, 2002, (except for Notes 1 and 14, as to which the date is August 13, 2002) with respect to the consolidated financial statements and schedule of Peregrine Pharmaceuticals, Inc. included in its Annual Report (Form 10-K) for the year ended April 30, 2002, filed with the Securities and Exchange Commission. /s/ ERNST & YOUNG LLP Orange County, California August 30, 2002