Dr. McHutchison has been a director since 2019, and he served Assembly's Chief Executive Officer and President from August 2019 until the end of 2022 when he stepped down from the CEO role. Dr. McHutchison has served as the Chief Executive Officer and Chairman of the Board of Tune Therapeutics, Inc., since March 2025. Prior to that, he served as the Chief Executive Officer and President of Velia Inc., from July 2023 until March 2025. Prior to his time with Assembly, Dr. McHutchison served as Chief Scientific Officer and Head of Research and Development at Gilead Sciences. During his nine years at Gilead he led the organization in the successful filing of numerous New Drug Applications (NDAs) and supplemental label updates across multiple therapeutic areas including the curative treatment regimens for chronic hepatitis C (HCV), and treatment of chronic HBV. Prior to Gilead, Dr. McHutchison held numerous positions at Duke University Medical Center, including Associate Director of the Duke Clinical Research Institute, Professor of Medicine in the Division of Gastroenterology, Director at Duke Clinical Research Unit and Co-Director of the Duke Clinical and Translational Science Award. Earlier in his career, Dr. McHutchison spent nearly a decade at Scripps Clinic and Research Foundation, and was previously an Assistant Professor of Medicine at the University of Southern California in Los Angeles. Dr. McHutchison served on the board of directors of Metacrine, Inc., then a public company, from February 2020 until December 2023, and currently serves on the board of directors of Velia Inc. and Tune Therapeutics, both private companies. Dr. McHutchison received his degrees in medicine and surgery from the University of Melbourne in Australia, completed an internal medicine residency and gastroenterology fellowship at the Royal Melbourne Hospital, and a post-doctoral fellowship in Liver Diseases at the University of Southern California. He is a member of the Royal Australasian College of Physicians, and in 2018, he was appointed an Officer of the Order of Australia (AO).