Arie Belldegrun, M.D. has served as our Chair of the Board since December 2012. Dr. Belldegrun is a co-founder of Allogene Therapeutics, a public biopharmaceutical company, and has served as Executive Chairman of its board of directors since November 2017. From March 2014 until October 2017, Dr. Belldegrun served as the President and Chief Executive Officer of Kite Pharma, Inc. and as a member of its board of directors from June 2009 until October 2017. He was also a Director of Gingko Bioworks (from September 2021 to November 2024) and Chairman of Kronos Bio, Inc. (November 2017 to June 2025). Dr. Belldegrun currently serves as Chairman of Bellco Capital LLC (since 2004); Chairman and Partner of Two River (since June 2009); Co-chairman of Breakthrough Properties LLC and Breakthrough Services, L.L.C. (since April 2019); Co-chairman of Symbiotic Capital (since June 2023); and Director of ByHeart, Inc. (since October 2019). Dr. Belldegrun is also Senior Managing Director of Vida Ventures, LLC (since November 2017). Dr. Belldegrun is a Research Professor, holds the Roy and Carol Doumani Chair in Urologic Oncology, and is Founder and Director of the UCLA Institute of Urologic Oncology at the David Geffen School of Medicine at UCLA. Prior to joining UCLA, Dr. Belldegrun was at the National Cancer Institute/NIH as a research fellow in surgical oncology and immunotherapy under Dr. Steven A. Rosenberg. He completed his M.D. at the Hebrew University Hadassah Medical School in Jerusalem, his post-graduate studies in Immunology at the Weizmann Institute of Science, and his residency in urologic surgery at Harvard Medical School. He has authored several books on oncology and more than 500 scientific and medical papers related to urological cancers, immunotherapy, gene therapy and cancer vaccines. He is certified by the American Board of Urology and the American Association of Genitourinary Surgeons. Our Board believes Dr. Belldegrun s business and medical knowledge and experience qualify him to serve on our Board.