Akshay Vaishnaw, M.D., Ph.D. has served as President of R&D of Scholar Rock since April 2025 and has served as a director since May 2019. Dr. Vaishnaw has been a venture partner at Atlas Venture since March 2024. From September 2023 to December 2024, Dr. Vaishnaw served as Chief Innovation Officer and Member of the Scientific Advisory Board at Alnylam Pharmaceuticals. From January 2022 to September 2023, Dr. Vaishnaw served as President of Alnylam and from March 2018 to January 2022, he served as President, R&D. Dr. Vaishnaw also served in various other roles of increasing responsibility at Alnylam since joining in 2006. Dr. Vaishnaw currently serves on the board of directors for Hemab Inc. since January 2024. Dr. Vaishnaw previously served on the board of directors for Editas Medicine, Inc. and Visterra, Inc. He received his M.D. from the University of Wales College of Medicine, U.K., and his Ph.D. from the University of London, U.K., in molecular immunology. He is a Fellow of the Royal College of Physicians, U.K. Our Board of Directors believes that Dr. Vaishnaw s extensive medical, drug development and business experience, combined with his leadership skills, qualify him to serve on our Board of Directors.