Catherine J. Mackey, Ph.D. has served as a member of our board of directors since April 2022. Dr. Mackey previously served as Senior Vice President of Pfizer Worldwide Research and Development and Director of Pfizer's La Jolla Laboratories, where she built Pfizer La Jolla into one of Pfizer's main pharmaceutical research and development sites. Prior to that role, she served as head of Strategic Alliances and Genomic and Proteomic Sciences for Pfizer. Dr. Mackey spent the first part of her career in agricultural biotechnology, including as Vice President of DEKALB Genetics, Inc., an international researcher, producer, and marketer of seed. Dr. Mackey serves on the board of directors of Voyager Therapeutics, a gene therapy and neurology biotechnology company, and previously served on the board of directors of Avid Bioservices, a commercial biologics contract development and manufacturing company. Dr. Mackey received her B.S. and Ph.D. degrees in microbiology from Cornell University. We believe Dr. Mackey is qualified to serve on our board of directors due to her life sciences research, development and operational background, including discovery and development of oncology therapies, and her service on the boards of other public and private biopharmaceutical companies.