Diane G. Gerst served as the Company’s Executive Vice President of Quality Assurance and Regulatory Affairs from June 2015 until February 2018 and also served as the President of Amphastar Nanjing Pharmaceuticals Inc., one of the Company’s subsidiaries, from March 2014 until February 2018. From August 2013 to June 2015, Ms. Gerst served as the Company’s Corporate Senior Vice President of Quality Assurance. Ms. Gerst served as Corporate Vice President of Quality Assurance from August 2003 until her promotion to Senior Vice President in August 2013. Previously, she was the Company’s Vice President of Regulatory Affairs from June 2001 to July 2002. Prior to joining the Company, Ms. Gerst held various management level positions in regulatory and quality including eight years at Braun-McGaw and seven years at IMS. Ms. Gerst received a B.A. from the University of California, Berkeley.