Regeneron Pharmaceuticals, Inc. (REGN) ownership: Top institutional holder: VANGUARD GROUP INC ($7.00B). Insider activity: Net Seller (0 buys, 20 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 9075153.00 | $7.00B | 2025-12-31 |
| BlackRock, Inc. | 8947735.00 | $6.91B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 6654913.00 | $5.14B | 2026-03-31 |
| STATE STREET CORP | 4664478.00 | $3.60B | 2026-03-31 |
| Dodge & Cox | 4458238.00 | $3.44B | 2026-03-31 |
| JPMORGAN CHASE & CO | 4311806.00 | $3.23B | 2026-03-31 |
| FRANKLIN RESOURCES INC | 2722071.00 | $2.10B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 2607732.00 | $2.01B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.