Keith R. Leonard Jr.
MARGO ROBERTS, PH.D. Margo Roberts, PH.D.

Chief Medical Officer and Executive
Vice President of R&D,
Sarepta Therapeutics

Dr. O’Neill has more than 25 years of experience in drug development, and medical and regulatory affairs. He is currently chief medical officer and executive vice president of research and development at Sarepta Therapeutics. Previously, Dr. O’Neill spent 15 years at Biogen, holding leadership roles in development programs for Alzheimer’s disease, movement disorders, neurology, multiple sclerosis, pain, neuromuscular disease, gene and cell therapy, and rare diseases, and overseeing multiple global marketing approvals. Dr. O’Neill, a board-certified neurologist, received a Bachelor of Medicine degree at University College Dublin and a Master of Medical Sciences degree from Harvard University. He completed his residency training in neurology at Massachusetts General Hospital, where he also served as Chief Resident.