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Freda Lewis-Hall, M.D. has served as a member of our board of directors since November 2019. Since January 2019, Dr. Lewis-Hall has served as Chief Patient Officer and Executive Vice President of Pfizer Inc., a pharmaceutical company. From 2009 to January 2019, Dr. Lewis-Hall served as Pfizer’s Chief Medical Officer. Prior to joining Pfizer in 2009, Dr. Lewis-Hall held various senior leadership positions including Chief Medical Officer and Executive Vice President, Medicines Development at Vertex Pharmaceuticals, Inc., a biopharmaceutical company, from June 2008 to May 2009, and Senior Vice President, U.S. Pharmaceuticals, Medical Affairs for Bristol-Myers Squibb Co. from 2003 to May 2008. Since August 2017, Dr. Lewis-Hall has served on the board of directors of SpringWorks Therapeutics, Inc., a biopharmaceutical company. From December 2014 to May 2017, she served on the board of directors of Tenet Healthcare Corporation, a healthcare services company. Dr. Lewis-Hall earned a B.A. in Natural Sciences from Johns Hopkins University and an M.D. from Howard University College of Medicine. We believe that Dr. Lewis-Hall is qualified to serve on our board of directors based on her expertise and experience in the biopharmaceutical industry and her leadership experience as a senior executive at various biopharmaceutical companies.