Felix J. Baker, Ph.D. has served as one of our directors since September 2015 and as chair of our compensation committee and a member of our nominating and governance committee since September 2018. Dr. Baker is a Managing Member of Baker Bros. Advisors LP a biotechnology-focused investment adviser to fund partnerships whose investors are primarily endowments and foundations, which Dr. Baker founded, together with his brother Julian Baker, in 2000. Dr. Baker holds a B.S. and a Ph.D. in Immunology from Stanford University, where he also completed two years of medical school. He also serves on the boards of Kiniksa Pharmaceuticals, Ltd., IGM Biosciences, Inc., Kymera Therapeutics, Inc., and Bicycle Therapeutics plc. Previously he served on the board of Seagen, Inc. from July 2003 through December 2023, and Alexion Pharmaceuticals, Inc. from June 2015 through February 2021.