Custopharm is a generic injectable drug services company. The company specializes in developing a range of generic injectable products, including those with complex formulations. Custopharm also offers regulatory consulting services to help customers with drafting and filing abbreviated new drug applications (ANDAs). Headquartered in Carlsbad, Calif., Custopharm has grown to serve more than 100 pharmaceutical companies since its founding in 2005. Water Street invested in Custopharm in 2015 and is building the company into a premier provider of generic injectable drug services.

William C. Larkins, Jr., Ph.D.

Chief Executive Officer

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William (Bill) Larkins has more than 20 years of experience in the pharmaceutical industry. Prior to joining Custopharm, Bill was vice president and general manager of Bedford Laboratories, Inc., where he oversaw a portfolio of more than 100 registered generic injectable products.  Previously, he was senior director of product development at Amylin Pharmaceuticals Inc., where he managed development activities for proprietary peptide and protein injectable products. Bill also held positions at Novartis, ESI-Lederle, Barr Laboratories, Inc. and Schein Pharmaceutical, Inc. He began his career as an analytical research chemist.  Bill received a doctorate degree in analytical chemistry from The Ohio State University and earned his bachelor’s degree in chemistry from Purdue University.