Company · CIK 0000872589 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
REGENERON PHARMACEUTICALS, INC. · REGN
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 2, 2026 SForm 4 → | Sep 3, 4:50 pm EDT | Marion McCourtEVP Commercial | 2,346 | $853.56 | $2,002,458 | 12,003 | −16.3% | 10b5-1 |
| Sep 2, 2026 SForm 4 → | Sep 3, 4:47 pm EDT | Kathryn GuariniDirector | 400 | $850.00 | $340,000 | 603 | −39.9% | 10b5-1 |
| Sep 2, 2026 MForm 4 → | Sep 3, 4:47 pm EDT | Kathryn GuariniDirector | 400 | $719.37 | $287,748 | 1,003 | — | 10b5-1 |
| Aug 19, 2026 FMForm 4 → | Aug 21, 4:01 pm EDT | Joseph J LarosaEVP General Counsel and Secret | 21,301 | $571.70 | $12,177,864 | 36,373 | — | |
| Aug 18, 2026 FMForm 4 → | Aug 20, 4:01 pm EDT | Christopher R. FenimoreEVP Finance CFO | 10,882 | $564.30 | $6,140,752 | 19,984 | — | |
| Aug 10, 2026 SForm 4 → | Aug 12, 4:16 pm EDT | Kathryn GuariniDirector | 400 | $800.00 | $320,000 | 603 | −39.9% | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 4:16 pm EDT | Kathryn GuariniDirector | 400 | $719.37 | $287,748 | 1,003 | — | 10b5-1 |
| Aug 10, 2026 SForm 4 → | Aug 12, 4:14 pm EDT | Huda Y ZoghbiDirector | 800 | $800.00 | $640,000 | 1,703 | −32.0% | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 4:14 pm EDT | Huda Y ZoghbiDirector | 800 | $376.69 | $301,352 | 2,503 | — | 10b5-1 |
| Jul 2, 2026 SForm 4 → | Jul 7, 4:05 pm EDT | Arthur F RyanDirector | 200 | $650.15 | $130,030 | 17,303 | −1.14% | 10b5-1 |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 2, 2026 MForm 4 → | Sep 3, 4:47 pm EDT | Kathryn GuariniDirector | 400 | — | — | 1,158 | — | 10b5-1 |
| Aug 19, 2026 MForm 4 → | Aug 21, 4:01 pm EDT | Joseph J LarosaEVP General Counsel and Secret | 12,282 | — | — | 12,283 | — | |
| Aug 18, 2026 MForm 4 → | Aug 20, 4:01 pm EDT | Christopher R. FenimoreEVP Finance CFO | 6,283 | — | — | 6,000 | — | |
| Aug 10, 2026 MForm 4 → | Aug 12, 4:16 pm EDT | Kathryn GuariniDirector | 400 | — | — | 1,558 | — | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 4:14 pm EDT | Huda Y ZoghbiDirector | 800 | — | — | 0 | — | 10b5-1 |