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Board of Directors

Frederick C. Beddingfield, III, MD, PhD

Frederick C. Beddingfield, III, MD, PhD

President and Chief Executive Officer

Frederick C. Beddingfield III, M.D., Ph.D. founded Sienna Biopharmaceuticals, Inc. and has served as our President and Chief Executive Officer since January 2016 and as a member of our board of directors since August 2015. Dr. Beddingfield is also a board-certified dermatologist and dermatologic surgeon. Dr. Beddingfield served as Chief Medical Officer of Kythera Biopharmaceuticals, Inc., or Kythera, a public biotechnology company, from March 2013 until it was acquired by Allergan, Inc., or Allergan, in October 2015. Previously, Dr. Beddingfield worked at Allergan from 2003 to 2013. From August 2005 until March 2013 he served as Vice President and Global Therapeutic Area Head, Dermatology and Aesthetics at Allergan. Dr. Beddingfield also served as Chief Medical Officer of Allergan Medical from December 2008 to August 2010. Currently, Dr. Beddingfield is a Clinical Associate Professor of Medicine/Dermatology at the University of California, Los Angeles School of Medicine where he has been on the faculty teaching and seeing patients since 2003. He also serves on the board of directors of Advancing Innovation in Dermatology and is a founder of the Dermatology Summit and Dermatology Entrepreneurship Conferences. Dr. Beddingfield also serves on the board of directors for Camp Wonder, a camp for children with severe skin diseases, as well as Cytrellis, Inc., a clinical stage medical technology company. Dr. Beddingfield holds a B.A. in Psychology from North Carolina State University, an M.D. from the University of North Carolina and a Ph.D. in Policy Analysis from RAND Graduate School of Policy Studies.