🕵️ Regeneron Pharmaceuticals, Inc. ($REGN)
SEC insider & ownership activity, last 12 months · CIK 872589 · every row links its SEC filing
Over the last 12 months insiders sold $9.6M with no open-market buying against it. Christine A. Poon sold $4.3M (Oct). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 5 sellers, $9.6M (79 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Christine A. Poon | 0 | – | 6 | $4.3M | Oct 29, 2025 |
| Pitofsky Jason | 0 | – | 12 | $1.9M | Feb 9, 2026 |
| Bonnie L. Bassler | 0 | – | 2 | $1.8M | Jan 7, 2026 |
| Huda Y. Zoghbi | 0 | – | 11 | $1.3M | Feb 19, 2026 |
| Arthur F. Ryan | 0 | – | 48 | $435K | Jul 2, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.4% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Arthur F. Ryan | $250K | Jul 2, 2026 | filing ↗ |
| Huda Y. Zoghbi | $1.3M | Feb 19, 2026 | filing ↗ |
| Pitofsky Jason | $1.6M | Feb 9, 2026 | filing ↗ |
| Arthur F. Ryan | $314K | Feb 9, 2026 | filing ↗ |
| Bonnie L. Bassler | $1.2M | Jan 7, 2026 | filing ↗ |
| Bonnie L. Bassler | $570K | Nov 20, 2025 | filing ↗ |
| Jason Pitofsky | $281K | Nov 7, 2025 | filing ↗ |
| Christine Poon | $4.2M | Oct 29, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 30, 2026 | filing ↗ |
| Earnings (2.02) | Jul 6, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 12, 2026 | filing ↗ |
| Earnings (2.02) | Apr 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 29, 2026 | filing ↗ |
| Earnings (2.02) | Apr 8, 2026 | filing ↗ |
| Earnings (2.02) | Jan 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 30, 2026 | filing ↗ |
| Earnings (2.02) | Jan 12, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 12, 2026 | filing ↗ |
| Earnings (2.02) | Oct 28, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 28, 2025 | filing ↗ |
| Earnings (2.02) | Oct 6, 2025 | filing ↗ |
| Earnings (2.02) | Aug 1, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 1, 2025 | filing ↗ |