# clm_31DC6D4DC56C

subject: Regeneron Pharmaceuticals (/record/regeneron-pharmaceuticals.md)  
predicate: ceo  
value: Leonard S. Schleifer  
valid_from: 1988-01-01  
valid_to: null  
published: 2026-04-24  
recorded: 2026-11-08  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-08  
cite: AsOf. "Regeneron Pharmaceuticals ceo: Leonard S. Schleifer", as of 1988-01-01. Claim clm_31DC6D4DC56C, https://asof.is/claim/clm_31DC6D4DC56C, accessed 2026-11-09. Source: https://www.sec.gov/Archives/edgar/data/872589/000130817926000340/regn-20260424.htm.  
checked: 2026-11-08 · its source page states the value and the date  

> Leonard S. Schleifer, M.D., Ph.D., 73, founded the Company in 1988 and has been a director and its President and Chief Executive Officer since its inception.

What https://www.sec.gov/Archives/edgar/data/872589/000130817926000340/regn-20260424.htm says, word for word.

## Sources

- https://www.sec.gov/Archives/edgar/data/872589/000130817926000340/regn-20260424.htm (primary, SEC EDGAR DEF 14A, published 2026-04-24)

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