Regeneron Pharmaceuticals, Inc. (REGN)
Regeneron Pharmaceuticals, Inc. (REGN) Insider Trading
Directors, officers and holders of more than 10% of REGN report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 309 transactions on file: 0 with code P, 34 with code S and 16 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | McCourt Marion | EVP Commercial | S Sale | 1,132 | $869.43 | $984,195 |
| Oct 30, 2026 | BROWN MICHAEL S | Director | S Sale | 1,929 | $875.00 | $1,687,875 |
| Oct 30, 2026 | BROWN MICHAEL S | Director | M Exercise | 1,929 | Not measured | Not measured |
| Oct 30, 2026 | BROWN MICHAEL S | Director | M Exercise | 1,929 | $725.89 | $1,400,242 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 463 | $780.63 | $361,432 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 55 | $762.57 | $41,941 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 376 | $775.46 | $291,573 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 283 | $771.56 | $218,351 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 380 | $779.59 | $296,244 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 27 | $761.36 | $20,557 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 105 | $768.33 | $80,675 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 127 | $769.30 | $97,701 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 279 | $766.47 | $213,845 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 66 | $776.31 | $51,236 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 224 | $773.40 | $173,242 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 121 | $774.48 | $93,712 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 74 | $760.65 | $56,288 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 38 | $777.76 | $29,555 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 35 | $755.91 | $26,457 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 192 | $767.39 | $147,339 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 12 | $770.20 | $9,242 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 6 | $753.76 | $4,523 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 16 | $757.68 | $12,123 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 211 | $772.56 | $163,010 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 25 | $763.76 | $19,094 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 24 | $758.16 | $18,196 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 271 | $765.39 | $207,421 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 14 | $759.96 | $10,639 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 219 | $764.40 | $167,404 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 50 | $781.47 | $39,074 |
| Oct 14, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | S Sale | 454 | $778.64 | $353,503 |
| Oct 13, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | M Exercise | 17,000 | Not measured | Not measured |
| Oct 13, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | M Exercise | 17,000 | $381.92 | $6,492,640 |
| Oct 13, 2026 | MURPHY ANDREW J | Co-Chief Scientific Officer | F Tax Payment | 12,853 | $754.58 | $9,698,617 |
| Sep 3, 2026 | McCourt Marion | EVP Commercial | S Sale | 1,131 | $857.39 | $969,708 |
| Sep 2, 2026 | Guarini Kathryn | Director | S Sale | 400 | $850.00 | $340,000 |
| Sep 2, 2026 | Guarini Kathryn | Director | M Exercise | 400 | Not measured | Not measured |
| Sep 2, 2026 | Guarini Kathryn | Director | M Exercise | 400 | $719.37 | $287,748 |
| Sep 2, 2026 | McCourt Marion | EVP Commercial | S Sale | 1,215 | $850.00 | $1,032,750 |
| Aug 19, 2026 | LAROSA JOSEPH J | EVP General Counsel and Secret | M Exercise | 12,282 | Not measured | Not measured |
| Aug 19, 2026 | LAROSA JOSEPH J | EVP General Counsel and Secret | M Exercise | 12,282 | $381.92 | $4,690,741 |
| Aug 19, 2026 | LAROSA JOSEPH J | EVP General Counsel and Secret | F Tax Payment | 9,019 | $830.15 | $7,487,123 |
| Aug 18, 2026 | Fenimore Christopher R. | EVP Finance CFO | M Exercise | 6,283 | $381.92 | $2,399,603 |
| Aug 18, 2026 | Fenimore Christopher R. | EVP Finance CFO | F Tax Payment | 4,599 | $813.47 | $3,741,149 |
| Aug 18, 2026 | Fenimore Christopher R. | EVP Finance CFO | M Exercise | 6,283 | Not measured | Not measured |
| Aug 10, 2026 | Guarini Kathryn | Director | M Exercise | 400 | $719.37 | $287,748 |
| Aug 10, 2026 | Zoghbi Huda Y | Director | M Exercise | 800 | Not measured | Not measured |
| Aug 10, 2026 | Zoghbi Huda Y | Director | M Exercise | 800 | $376.69 | $301,352 |
| Aug 10, 2026 | Guarini Kathryn | Director | S Sale | 400 | $800.00 | $320,000 |
| Aug 10, 2026 | Zoghbi Huda Y | Director | S Sale | 800 | $800.00 | $640,000 |
The full Form 4 history is on the REGN company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.