| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| McCourt Marion | EVP Commercial | 777 OLD SAW MILL RIVER ROAD, TARRYTOWN | /s/ Marion McCourt | 11 Dec 2025 | 0001663758 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | REGN | Common Stock | Tax liability | $716,242 | -1,021 | -6.6% | $701.51 | 14,349 | 09 Dec 2025 | Direct | |
| holding | REGN | Common Stock | 197 | 09 Dec 2025 | By 401(k) Plan |