On July 31, 2023, the Board of Directors of Allakos Inc. (Company), upon the recommendation of the Corporate Governance and Nominating Committee of the Board, increased the authorized number of directors on the Board from six (6) to eight (8) members and appointed E. Rand Sutherland, M.D. and Dolca Thomas, M.D. to the Board and to the newly established Research and Clinical Development Committee of the Board (the ?Research and Clinical Development Committee?), effective immediately. Drs. Sutherland and Thomas will serve as a Class III and Class I directors, respectively, with terms expiring at the Company?s 2024 and 2025 annual meetings of stockholders, respectively, or until each of their successors is elected and qualified, or until their earlier death, resignation or removal.

Dr. Sutherland was the Chief Executive Officer of Seeker Biologicsand currently serves on the board of directors of Krystal Biotech Inc. and Vanqua Bio Inc. Among other experiences, Dr. Sutherland held senior roles developing therapeutics at Translate Bio Inc. as well as Sanofi and he received his M.D. from the University of Chicago. Dr. Thomas is a Venture Partner with Samsara BioCapital and currently serves on the board of directors of Chinook Therapeutics Inc. and Ventus Therapeutics Inc. Among other experiences, Dr. Thomas was the Executive Vice President, Head of Research and Development and Chief Medical Officer at Equillium Inc. as well as the Chief Medical Officer at Principia Biopharma Inc. and she received her M.D. from Cornell University.