Gregg Pratt, PhD

Dr. Pratt brings more than three decades of experience in drug development, registration, and commercialization, with a distinguished career spanning multiple therapeutic areas including psychiatry, neurology, and cardiology. Dr. Pratt joins Definium from Karuna Therapeutics, which Bristol Myers Squibb acquired in March 2024. At Karuna, he served as Senior Vice President of Regulatory Affairs and Quality Assurance, where he oversaw the regulatory submission and ultimate approval by the U.S. Food and Drug Administration (FDA) of COBENFY™, the first product in four decades with a novel mechanism of action in schizophrenia. Before joining Karuna Therapeutics, Dr. Pratt held leadership positions at Lundbeck, Abbvie, Solvay, Collegium, Baxter, and Assertio Therapeutics, where he led regulatory affairs in drug, biologic, and combination product development strategies, as well as registration maintenance for approved products in global markets. Dr. Pratt has a Ph.D. in chemistry from West Virginia University and a Bachelor of Science degree from the University of Wyoming.