Leonard S. Schleifer, M.D., Ph.D.
Founder, President, and Chief Executive Officer
Leonard S. Schleifer, M.D., Ph.D., founded the Company in 1988, has been a Director and its President and Chief Executive Officer since its inception, and served as Chairman of the Board from 1990 through 1994. From 1984 to 1988 he was Assistant Professor at the Cornell University Medical College in the Departments of Neurology and Neurobiology. Dr. Schleifer received his M.D. and Ph.D. in Pharmacology from the University of Virginia. Dr. Schleifer is a licensed physician and is certified in neurology by the American Board of Psychiatry and Neurology.
George D. Yancopoulos, M.D., Ph.D.
Founding Scientist, President, Regeneron Laboratories
& Chief Scientific Officer
George D. Yancopoulos, M.D., Ph.D., joined the Company in 1989 as its Founding Scientist and is currently President, Regeneron Laboratories and Chief Scientific Officer. He received his M.D. and Ph.D. from Columbia University. Dr. Yancopoulos was the 11th most highly cited scientist in the world in the 1990s, and in 2004 he was elected to be a member of the National Academy of Sciences. Dr. Yancopoulos, together with key members of his team, is a principal inventor and developer of Regeneron's three FDA-approved drugs - including EYLEA® (aflibercept) Injection, ZALTRAP® (ziv-aflibercept) Injection for Intravenous Infusion, and ARCALYST® (rilonacept) Injection - as well as of its foundation technologies including the TRAP technology, VelociGene®, and VelocImmune®.