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 corporate governance committee since September 2018. Dr. Baker is Co-Managing Member of Baker Bros. Advisors LP. Dr. Baker and his brother, Julian Baker, started their fund management careers in 1994 when they co-founded a biotechnology investing partnership with the Tisch Family. In 2000, they founded Baker Bros. Advisors LP. Dr. Baker currently also serves on the boards of directors of three public companies: Seattle Genetics, Inc., Genomic Health, Inc. and Alexion Pharmaceuticals, Inc. From October 2000 to June 2015, Dr. Baker additionally served on the board of directors of Synageva BioPharma Corp. Dr. Baker holds a B.S. and a Ph.D. in Immunology from Stanford University, where he also completed two years of medical school.

Bassil I. Dahiyat, Ph.D. has served as a member of our board of directors since June 2018 and as a member of our compensation committee and audit committee since September 2018. Dr. Dahiyat has served as President and Chief Executive Officer of Xencor, Inc., a biopharmaceutical company, since February 2005. Dr. Dahiyat co- founded Xencor in 1997, served as its Chief Executive Officer from 1997 to 2003 and served as its Chief Scientific Officer from 2003 to 2005. In 2005, Dr. Dahiyat was recognized as a technology pioneer by the World Economic Forum. Additionally, Dr. Dahiyat was named one of 2003’s Top 100 Young Innovators by MIT’s Technology Review magazine for his work on protein design and its development for therapeutic applications and has received awards from the American Chemical Society, the Controlled Release Society and the California Institute of Technology. Dr. Dahiyat currently serves on Xencor’s board of directors. Dr. Dahiyat holds a Ph.D. in Chemistry from the California Institute of Technology and B.S. and M.S.E. degrees in Biomedical Engineering from Johns Hopkins University.

Richard S. Levy, M.D. has served as a member of our board of directors since June 2018 and a member of our nominating and corporate governance committee since September 2018. Since December 2016, Dr. Levy has served as a senior advisor of Baker Bros. Advisors LP, a registered investment advisor focused on long-term investments in life sciences companies on behalf of major university endowments and foundations. From January 2009 to April 2016, Dr. Levy served as Executive VicePresident and Chief Drug Development Officer of Incyte Corporation, a pharmaceutical company, where he previously served as Senior Vice President of Drug Development from August 2003 to January 2009. Prior to joining Incyte, Dr. Levy served as Vice President, Biologic Therapies, at Celgene Corporation, a biopharmaceutical company, from 2002 to 2003. From 1997 to 2002, Dr. Levy served in various executive positions with DuPont Pharmaceuticals Company, first as Vice President, Regulatory Affairs and Pharmacovigilance, and thereafter as Vice President, Medical and Commercial Strategy. Dr. Levy served at Sandoz, a predecessor company of Novartis, from 1991 to 1997 in positions of increasing responsibility in clinical research and regulatory affairs. Prior to joining the pharmaceutical industry, Dr. Levy served as an Assistant Professor of Medicine at the UCLA School of Medicine. Dr. Levy currently serves on the board of directors of Madrigal Pharmaceuticals Inc. and of Aquinox Pharmaceuticals. Dr. Levy is board certified in Internal Medicine and Gastroenterology and received his A.B. in Biology from Brown University, his M.D. from the University of Pennsylvania School of Medicine, and completed his training in Internal Medicine and Gastroenterology at the Hospital of the University of Pennsylvania and a fellowship in Gastroenterology and Hepatology at UCLA.

Victor Perlroth is the co-founder of Kodiak Sciences and is the company’s chairman and chief executive officer.  Together with a talented core team, Dr. Perlroth has built Kodiak on a foundation of scientific and operational excellence with a simple mission—to design and develop important new medicines for highly prevalent diseases. Under Dr. Perlroth’s leadership, Kodiak is building a pipeline of potentially life transforming ophthalmology drug candidates with the goal to build a leading retinal franchise for the benefit of patients globally.  Prior to co-founding Kodiak, Dr. Perlroth co-founded Avidia Inc, a biopharmaceuticals drug discovery and development company where he served in senior corporate and research and development roles until Amgen acquired the company for $450 million. After Avidia, Dr. Perlroth worked in life sciences venture capital as venture partner then entrepreneur in residence. Earlier, Dr. Perlroth served as the chief operating officer at Guzik Technical Enterprises, the industry-leading provider of test equipment to the hard disk drive industry. Dr. Perlroth earned his M.D. and M.B.A. degrees from Stanford University and an A.B. in molecular biology summa cum laude from Princeton University.

Robert A. Profusek has served as one of our directors since June 2018, as our lead independent director since August 2018, as chair of our nominating and corporate governance committee and a member of our compensation committee since September 2018. Mr. Profusek is a partner of the Jones Day law firm where he is the global chair of the firm’s mergers and acquisitions practice. His law practice focuses on mergers, acquisitions, takeovers, restructurings and corporate governance matters. Mr. Profusek is also the lead independent director of Valero Energy Corporation, a publicly traded international manufacturer and marketer of transportation fuels and other petrochemical products, and CTS Corporation, a publicly traded designer and manufacturer of sensors, actuators and electronic components. He served as a director of the managing general partner of Valero L.P. (now known as NuStar Energy L.P.) from 2001 to 2005. Mr. Profusek holds a B.A. from Cornell University and a J.D. from New York University.

Taiyin Yang, Ph.D. has served as a member of our board of directors and a member of our audit committee since December 2019. Dr. Yang joined Gilead in 1993 and was appointed to her most recent role as Executive Vice President, Pharmaceutical Development and Manufacturing in January 2015, prior to her retirement in July 2022. She was responsible for the chemistry, manufacturing and control operations of small molecules and biologics encompassing process development, production, supply chain management, analytical operations, laboratory information and quality assurance for Gilead’s investigational and commercial products. Prior to joining Gilead, Dr. Yang was Director of Analytical Chemistry at Syntex. She received her bachelor’s degree in Chemistry from National Taiwan University and her Ph.D. in Organic Chemistry from the University of Southern California.