| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MURPHY ANDREW J | EVP Research | 777 OLD SAW MILL RIVER ROAD, TARRYTOWN | /s/ Andrew Murphy | 11 Dec 2025 | 0001796226 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | REGN | Common Stock | Tax liability | $2,966,686 | -4,229 | -8.1% | $701.51 | 47,833 | 09 Dec 2025 | Direct | |
| holding | REGN | Common Stock | 4,375 | 09 Dec 2025 | By 401(k) Plan |