Leonard S. Schleifer, MD, PhD, has built and managed Regeneron since 1988 alongside his co-Founder George D. Yancopoulos. He is currently board co-Chair, president and chief executive officer of Regeneron.

Leonard S. Schleifer (born 1953) is an American businessman and is the co-founder and chief executive of the biotechnology company Regeneron Pharmaceuticals.

Leonard S. Schleifer, MD, PhD. Board co-Chair, President and Chief Executive Officer

Leonard S. Schleifer, MD, PhD, founded Regeneron in 1988, and has been a board member and the company’s president and chief executive officer since its inception. He currently serves as board co-chair.

Leonard Schleifer cofounded drugmaker Regeneron in 1988, and remains CEO of the Tarrytown, New York-based company. Schleifer took Regeneron public in 1991; he owns 2% of the company's...

Jan 9, 2024 · Regeneron CEO Leonard Schleifer elaborated on the biotech company's newest ventures with CNBC's Jim Cramer and pointed to gene therapy as especially innovative. …

Our President and CEO, Leonard S. Schleifer, is named Ernst & Young's 2011 New York Entrepreneur Of The Year ®. The Science Top Employer survey names us the #1 employer in the global biopharmaceutical industry. Scrip Intelligence names us Biotech Company of the Year.

May 4, 2021 · Dr. Leonard S. Schleifer started Regeneron in his New York City apartment in 1988, eight years after earning his Ph.D. in pharmacology from the University of Virginia, where he also attended medical school.

Leonard S. Schleifer is an American businessman and is the co-founder and chief executive of the biotechnology company Regeneron Pharmaceuticals.

Jan 13, 2025 · “The Regeneron name is synonymous with innovation, brought to life through proprietary technologies and world-class science that produce medicines that make a meaningful impact on patients’ lives,” said Leonard S. Schleifer, M.D., Ph.D., Board co-Chair, President and Chief Executive Officer of Regeneron. “Thanks to our long-term and ...