CIK 0000872589 · Large accelerated filer
REGENERON PHARMACEUTICALS, INC.
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- REGN
- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- FY end
- Dec 31
- Incorporated
- NY
- Entity type
- operating
- EIN
- 133444607
- Phone
- 9148477000
- Business address
- 777 OLD SAW MILL RIVER ROAD, TARRYTOWN, NY, 10591
- Former names
- REGENERON PHARMACEUTICALS INC
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $51,901,544
- in 11 filings, $8.6M under 10b5-1 plans
Net −$51,901,544. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-10-14 | MURPHY ANDREW J Co-Chief Scientific Officer | Sale 10b5-1 | −380 | $779.59 | $296K | 48,346 |
| 2026-10-14 | MURPHY ANDREW J Co-Chief Scientific Officer | Sale 10b5-1 | −463 | $780.63 | $361K | 47,883 |
| 2026-10-14 | MURPHY ANDREW J Co-Chief Scientific Officer | Sale 10b5-1 | −50 | $781.47 | $39K | 47,833 |
| 2026-10-13 | MURPHY ANDREW J Co-Chief Scientific Officer | Option exercise 10b5-1 | +17,000 | $381.92 | $6.5M | 64,833 |
| 2026-10-13 | MURPHY ANDREW J Co-Chief Scientific Officer | Shares withheld for taxes 10b5-1 | −12,853 | $754.58 | $9.7M | 51,980 |
| 2026-10-13 | MURPHY ANDREW J Co-Chief Scientific Officer | Option exercise · Non-Qualified Stock Option (right to buy) 10b5-1 | −17,000 | 17,000 | ||
| 2026-09-03 | McCourt Marion EVP Commercial | Sale 10b5-1 | −1,131 | $857.39 | $970K | 12,003 |
| 2026-09-02 | Guarini Kathryn Director | Option exercise 10b5-1 | +400 | $719.37 | $288K | 1,003 |
| 2026-09-02 | Guarini Kathryn Director | Sale 10b5-1 | −400 | $850.00 | $340K | 603 |
| 2026-09-02 | Guarini Kathryn Director | Option exercise · Non-Qualified Stock Option (right to buy) 10b5-1 | −400 | 1,158 | ||
| 2026-09-02 | McCourt Marion EVP Commercial | Sale 10b5-1 | −1,215 | $850.00 | $1.0M | 13,134 |
| 2026-08-19 | LAROSA JOSEPH J EVP General Counsel and Secret | Option exercise | +12,282 | $381.92 | $4.7M | 45,392 |
| 2026-08-19 | LAROSA JOSEPH J EVP General Counsel and Secret | Shares withheld for taxes | −9,019 | $830.15 | $7.5M | 36,373 |
| 2026-08-19 | LAROSA JOSEPH J EVP General Counsel and Secret | Option exercise · Non-Qualified Stock Option (right to buy) | −12,282 | 12,283 | ||
| 2026-08-18 | Fenimore Christopher R. EVP Finance CFO | Option exercise | +6,283 | $381.92 | $2.4M | 24,583 |
| 2026-08-18 | Fenimore Christopher R. EVP Finance CFO | Shares withheld for taxes | −4,599 | $813.47 | $3.7M | 19,984 |
| 2026-08-18 | Fenimore Christopher R. EVP Finance CFO | Option exercise · Non-Qualified Stock Option (right to buy) | −6,283 | 6,000 | ||
| 2026-08-10 | Guarini Kathryn Director | Option exercise 10b5-1 | +400 | $719.37 | $288K | 1,003 |
| 2026-08-10 | Guarini Kathryn Director | Sale 10b5-1 | −400 | $800.00 | $320K | 603 |
| 2026-08-10 | Guarini Kathryn Director | Option exercise · Non-Qualified Stock Option (right to buy) 10b5-1 | −400 | 1,558 |
Page 5 of 49 · 971 trades