Michael M. Morrissey, Ph.D., has served as a director and as Exelixis’ President and Chief Executive Officer since July 2010. Dr. Morrissey has held positions of increasing responsibility at Exelixis since he joined the company in February 2000, including serving as President of Research and Development from January 2007 to July 2010. From 1991 to 2000, Dr. Morrissey held several positions at Berlex Biosciences, last holding the position of Vice President, Discovery Research. Earlier in his career, Dr. Morrissey served as a Senior Scientist and Project Team Leader in Medicinal Chemistry at CIBA-Geigy Corporation. Dr. Morrissey has served as Chair of the board of directors of Vera Therapeutics, Inc., a publicly held, clinical-stage biotechnology company focused on developing and commercializing transformative treatments for patients with serious immunological diseases, since April 2022, and previously served as a member of the board of directors of XWPharma Ltd., a privately held, clinical-stage biopharmaceutical company dedicated to the discovery and development of novel therapeutics, from December 2020 to April 2023, and as a member of the board of directors of CERo Therapeutics, Inc., a privately held biopharmaceutical company focused on next-generation cell-based therapies for cancer, from January 2022 to November 2022. He is the author of numerous scientific publications in medicinal chemistry and drug discovery and an inventor on 70 issued U.S. patents and 25 additional published U.S. patent applications. Dr. Morrissey holds a B.S. (Honors) in Chemistry from the University of Wisconsin and a Ph.D. in Chemistry from Harvard University.