On February 17, 2022, the board of directors of 89bio, Inc. appointed Edward Morrow Atkinson III as a member of the Board, effective November 1, 2021. Dr. Atkinson will serve as a Class I Director until the Company's 2023 Annual Meeting of Stockholders and until his successor is duly elected and qualified, effective immediately. Dr. Atkinson, age 56, has over 20 years of experience in biopharmaceutical development, launch, manufacturing and supply chain.

Dr. Atkinson has served as Senior Vice President, Head of Commercial Manufacturing and Supply Chain for Vertex Pharmaceuticals, Inc.