RayzeBio, Inc. announced the appointment of Tim Van Hauwermeiren to its board of directors. As co-founder and CEO of argenx, Tim has built a reputation for his strong execution and innovation, leading argenx from early-stage development into a global immunology company. Tim Van Hauwermeiren co-founded argenx and has served as Chief Executive Officer since 2008.

Tim has more than 20 years of general management and business development experience across the life sciences and consumer goods sectors, including at Ablynx and Procter & Gamble. He holds a B.Sc. and M.Sc.

in bioengineering from Ghent University and an Executive MBA from The Vlerick School of Management. Tim serves on the Board of Directors of iTeos Pharmaceuticals. In connection with Tim joining the board of directors, Aaron Royston, M.D. has resigned as a board member, effective November 1, 2023.

Dr. Royston served as a director of the company from August 2020. Dr. Royston indicated that his resignation was not a result of any disagreement with the company on any matter relating to the company's operations, policies or practices.