Mr. Clark has served as a member of our board of directors since 2017. Mr. Clark served as the chief executive officer and member of the board of directors at Genentech, until his retirement in 2016. Prior to his role of chief executive officer, Mr. Clark held executive management roles at Genentech, including head of global product strategy, chief marketing officer, senior vice president, general manager of biooncology and executive vice president for commercial operations. Prior to these roles, Mr. Clark served as general manager, Novartis Canada and chief operating officer for Novartis U.K. Before joining Novartis, Mr. Clark served in positions of increasing strategic importance in sales, marketing and business development at Ivax Pharma and Sanofi in the United Kingdom, France and Eastern Europe. He started his career at Searle (a subsidiary of Monsanto Corporation), holding positions in both sales and marketing. Mr. Clark serves as a member of the board of directors at Takeda, Guardant Health, Forty Seven, Avrobio and Corvus Pharmaceuticals. He is also on the BioFulcrum board of the Gladstone Institute. Mr. Clark received his B.S. in biological sciences and an honorary doctorate of science from Southampton University in the United Kingdom.