| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| YANCOPOULOS GEORGE | Bd. Co-Chair, President & CSO, Director | 777 OLD SAW MILL RIVER ROAD, TARRYTOWN | /s/ George D. Yancopoulos | 11 Dec 2025 | 0001226690 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | REGN | Common Stock | Options Exercise | $81,580,691 | +146,815 | +50% | $555.67 | 442,334 | 09 Dec 2025 | Direct | |
| transaction | REGN | Common Stock | Tax liability | $92,510,930 | -131,874 | -30% | $701.51 | 310,460 | 09 Dec 2025 | Direct | |
| holding | REGN | Common Stock | 71,487 | 09 Dec 2025 | By 2024 GRAT | ||||||
| holding | REGN | Common Stock | 200,000 | 09 Dec 2025 | By 2025 GRAT | ||||||
| holding | REGN | Common Stock | 200,000 | 09 Dec 2025 | By 2025 GRAT II | ||||||
| holding | REGN | Common Stock | 5,962 | 09 Dec 2025 | By 401(k) Plan | ||||||
| holding | REGN | Common Stock | 180,000 | 09 Dec 2025 | By Trust for Chldn. | F1 | |||||
| holding | REGN | Common Stock | 101,988 | 09 Dec 2025 | by 2024 GRAT II | ||||||
| holding | REGN | Common Stock | 56,048 | 09 Dec 2025 | by Children |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | REGN | Non-Qualified Stock Option (right to buy) | Options Exercise | $0 | -146,815 | -100% | $0.000000 | 0 | 09 Dec 2025 | Common Stock | 146,815 | $555.67 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | As investment trustee of trusts for the benefit of the reporting person's children. |
| F2 | The stock option award vested in four equal annual installments, commencing one year after the date of grant. |