He has also served as Executive Vice President of Research and Development at Biogen. Prior to Biogen he was CEO at ZymoGenetics and led its acquisition by Bristol Myers Squibb. He has also held a variety of leadership positions, including Chief Scientific Officer and Executive Vice President of Research and Development at Seattle Genetics (acquired by Pfizer in 2023), Senior Vice President and Washington Site Leader at Amgen and Executive Vice President and Chief Technology Officer and a member of the Board of Directors at Immunex (acquired by Amgen in 2021). Dr. Williams has served as a board member of more than a dozen public and private biotechnology companies and is currently Chair of the Board of AC Immune SA and a Director of Stablix. He holds a Ph.D. from the State University of New York at Buffalo, Roswell Park Division and completed a postdoctoral fellowship at Indiana University School of Medicine.
