Joseph Carleone, Ph.D.

Chairman of the Board

Dr. Carleone was appointed to the Board of Directors in November 2017, and currently serves as the non-executive Chairman of the Board. Dr. Carleone was Chairman of the Board of AMPAC Fine Chemicals LLC, a leading manufacturer of pharmaceutical active ingredients from 2015 to 2018. Prior to this position, Dr. Carleone was President, Chief Executive Officer and director of American Pacific Corporation, a leading custom manufacturer of fine and specialty chemicals and propulsion products. Dr. Carleone has also served or currently serves as an officer and/or a director of several directly or indirectly wholly-owned subsidiaries of American Pacific Holdings, LLC. Dr. Carleone received his bachelor's degree in Mechanical Engineering from Drexel University, Philadelphia, Pennsylvania, in 1 968; his master's degree in Applied Mechanics from Drexel University in 1970; and his doctorate degree in Applied Mechanics from Drexel University in 1972. Dr. Carleone has served as a director of Sensient Technologies, Inc. (NYSE:SXT) since 2014, and is the Lead Director and member of the Audit and Scientific Advisory Committees. The Board of Directors concluded that Dr. Carleone should serve as a director in light of his operational, governance, management and scientific experience, including extensive executive management and leadership experience as Chief Executive Officer and as Chairman of a public corporation.