Meet Leonard S. Schleifer, Regeneron CEO

Bio, work history, education & how to reach out.

Leonard S. Schleifer

Job Title

CEO at Regeneron

Contact Information

*******@regeneron.com

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Last updated: 2026-03-03

Who is Leonard S. Schleifer?

Leonard S. Schleifer, MD, PhD, is the co-founder, president, and CEO of Regeneron Pharmaceuticals. He has led the company since its founding in 1988, focusing on innovative biotechnologies to develop medicines for serious diseases.

Leonard S. Schleifer's Work History

Leonard Schleifer has built and managed Regeneron since 1988, overseeing its growth into a leading biotechnology firm with numerous FDA-approved medicines. His career spans neurology, scientific research, and biotech entrepreneurship.

  • 1988 — Chief Executive Officer, Regeneron Pharmaceuticals
  • 1990 - 1994 — Chairman of the Board, Regeneron Pharmaceuticals
  • 1992 — Clinical Professor of Neurology and Neuroscience, Weill Cornell Medical College

Leonard S. Schleifer's Education

Leonard Schleifer earned his M.D. and Ph.D. in pharmacology from the University of Virginia and a B.A. from Cornell University.

  • University of Virginia — MD, PhD in Pharmacology
  • Cornell University — Bachelor of Arts

How to Reach Leonard S. Schleifer?

You can reach Leonard S. Schleifer at *******@regeneron.com or by calling +1 **********. To get Leonard S. Schleifer's contact information and other B2B leads like this, sign up for a free account at Anybody.com.

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