Leonard Schleifer Net Worth (Updated 2026).
Leonard Schleifer, born in 1950, began his career in the healthcare industry after graduating from medical school. He initially worked as a physician, honing his skills and gaining valuable experience in the field.
In 1988, Schleifer co-founded Regeneron Pharmaceuticals, a biotechnology company dedicated to transforming medicine through innovation. His vision was to create groundbreaking therapies that could significantly improve patients’ lives.
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Leonard Schleifer’s Current Net Worth
As of 2025, Leonard Schleifer’s net worth is estimated to be around $5 billion. This significant figure reflects his successful career and ventures in the pharmaceutical industry.
Career
Leonard Schleifer is the co-founder and former CEO of Regeneron Pharmaceuticals, a biotechnology company he established in 1988. Under his leadership, Regeneron grew into a global biopharmaceutical company, known for its innovative medicines and cutting-edge research. In 2021, he stepped down as CEO but remains as the company’s executive chairman.
Other Ventures
In addition to Regeneron, Schleifer has invested in and advised several other biotechnology and healthcare companies. He is also a venture partner at Venrock, a venture capital firm focused on healthcare and technology investments.
Assets
Schleifer’s assets include a significant stake in Regeneron Pharmaceuticals, as well as real estate holdings. He owns a residence in Scarsdale, New York, and has been reported to have investments in various other properties. His philanthropic efforts include contributions to medical research and educational institutions.
Annual Income
As of 2021, Leonard Schleifer’s total compensation from Regeneron Pharmaceuticals was approximately $25 million, including his salary, stock awards, and other compensation. This figure can vary year to year, and his annual income also includes earnings from his other ventures and investments.
Frequently Asked Questions about Leonard Schleifer
**Frequently Asked Questions: Leonard Schleifer Net Worth**
1. What is Leonard Schleifer’s net worth?
Leonard Schleifer’s net worth is estimated to be around $3 billion.
2. How did Leonard Schleifer make his fortune?
Leonard Schleifer co-founded Regeneron Pharmaceuticals in 1988. He served as the company’s CEO until 2021 and remains its executive chairman. Regeneron is known for developing and commercializing innovative medicines, including Eylea for treating eye diseases and Dupixent for atopic dermatitis.
3. What is Leonard Schleifer’s role at Regeneron?
Leonard Schleifer is the executive chairman of Regeneron Pharmaceuticals. He co-founded the company and served as its CEO from 1988 until 2021. He continues to play a significant role in the company’s strategic direction and scientific innovation.
4. When was Regeneron Pharmaceuticals founded?
Regeneron Pharmaceuticals was founded in 1988.
5. What are some of Regeneron’s most successful drugs?
Regeneron’s most successful drugs include Eylea (aflibercept) for treating eye diseases, Dupixent (dupilumab) for atopic dermatitis, and Kevzara (sarilumab) for treating rheumatoid arthritis. These drugs have generated significant revenue for the company.
6. Has Leonard Schleifer received any awards or recognition?
Yes, Leonard Schleifer has received numerous awards and recognitions for his contributions to the pharmaceutical industry. Some of these include being inducted into the Biotech Hall of Fame, receiving the BIO Humanitarian Award, and being named one of the “100 Most Influential People in the World” by Time magazine in 2015.
7. What is Leonard Schleifer’s educational background?
Leonard Schleifer earned his undergraduate degree from the University of Notre Dame and his medical degree from the University of Virginia School of Medicine. He also completed a residency in internal medicine at the University of California, San Diego.
8. What is Leonard Schleifer’s investment portfolio like?
Leonard Schleifer’s investment portfolio is primarily focused on healthcare and biotechnology companies. He has invested in several startups and venture capital funds, including Flagship Pioneering and OrbiMed. However, the details of his portfolio are not publicly disclosed.
9. How does Leonard Schleifer give back to society?
Leonard Schleifer is known for his philanthropic efforts. He and his wife, Andrea, have established the Schleifer Family Foundation, which supports various charitable causes, including healthcare, education, and social services. They have also made significant donations to their alma maters, the University of Notre Dame and the University of Virginia.
10. What is Leonard Schleifer’s leadership style?
Leonard Schleifer is known for his innovative and collaborative leadership style. He has fostered a culture of scientific excellence and innovation at Regeneron, encouraging collaboration and risk-taking among its employees. He has also been described as a visionary leader who has driven the company’s growth and success through his strategic decision-making and commitment to research and development.
