As of the latest Form 4 filed Jul 7, 2026.
What Regeneron Pharmaceuticals Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 49 most recent filings for REGN.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-07 | 2026-07-02 | RYAN ARTHUR F Director | SSale | −200.00 | $650.15 | $130K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason SVP Controller | SSale | −53.00 | $785.72 | $41.6K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −1.00 | $784.66 | $784.66 | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −144.00 | $783.23 | $113K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −37.00 | $782.67 | $29.0K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −26.00 | $781.37 | $20.3K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −75.00 | $780.06 | $58.5K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −205.00 | $779.56 | $160K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −563.00 | $778.35 | $438K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −391.00 | $777.51 | $304K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −521.00 | $776.43 | $405K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | SSale | −20.00 | $775.95 | $15.5K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | Pitofsky Jason, SVP Controller | MExercise | +1.00K | $492.00 | $492K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F Director | SSale | −1.00 | $787.82 | $787.82 | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −2.00 | $786.29 | $1.57K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −1.00 | $785.71 | $785.71 | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −1.00 | $784.59 | $784.59 | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −3.00 | $783.34 | $2.35K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −1.00 | $782.53 | $782.53 | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −5.00 | $781.48 | $3.91K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −1.00 | $780.09 | $780.09 | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −5.00 | $779.41 | $3.90K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −12.00 | $778.53 | $9.34K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −57.00 | $777.56 | $44.3K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −10.00 | $776.59 | $7.77K | Yes (planned) | Form 4 ↗ |
| 2026-02-11 | 2026-02-09 | RYAN ARTHUR F, Director | SSale | −1.00 | $775.63 | $775.63 | Yes (planned) | Form 4 ↗ |
| 2026-01-08 | 2026-01-07 | Bassler Bonnie L Director | SSale | −1.50K | $800.00 | $1.20M | Yes (planned) | Form 4 ↗ |
| 2026-01-08 | 2026-01-07 | Bassler Bonnie L, Director | MExercise | +1.50K | $374.12 | $561K | Yes (planned) | Form 4 ↗ |
| 2025-12-31 | 2025-12-30 | SING GEORGE L Director | FTax | −6.19K | $774.03 | $4.79M | No | Form 4 ↗ |
| 2025-12-31 | 2025-12-30 | SING GEORGE L, Director | MExercise | +9.21K | $520.01 | $4.79M | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | MURPHY ANDREW J EVP Research | FTax | −4.23K | $701.51 | $2.97M | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | McCourt Marion EVP Commercial | FTax | −1.02K | $701.51 | $716K | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | Van Plew Daniel P EVP & General Mgr, Industrial | FTax | −2.55K | $701.51 | $1.79M | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | YANCOPOULOS GEORGE Bd. Co-Chair, President & CSO | FTax | −132K | $701.51 | $92.5M | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | YANCOPOULOS GEORGE, Bd. Co-Chair, President & CSO | MExercise | +147K | $555.67 | $81.6M | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | SCHLEIFER LEONARD S Bd. Co-Chair, President & CEO | FTax | −155K | $701.51 | $109M | No | Form 4 ↗ |
| 2025-12-11 | 2025-12-09 | SCHLEIFER LEONARD S, Bd. Co-Chair, President & CEO | MExercise | +173K | $555.67 | $96.0M | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-08 | Pitofsky Jason VP Controller | FTax | −989.00 | $712.94 | $705K | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-08 | MURPHY ANDREW J EVP Research | FTax | −1.70K | $712.94 | $1.21M | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-08 | Fenimore Christopher R. EVP Finance CFO | FTax | −992.00 | $712.94 | $707K | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-08 | McCourt Marion EVP Commercial | FTax | −1.34K | $712.94 | $952K | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-08 | Van Plew Daniel P EVP & General Mgr, Industrial | FTax | −1.91K | $712.94 | $1.36M | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-08 | LAROSA JOSEPH J EVP General Counsel and Secret | FTax | −1.40K | $712.94 | $995K | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-05 | Pitofsky Jason VP Controller | AAward | +2.06K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-05 | MURPHY ANDREW J EVP Research | AAward | +3.71K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-05 | Fenimore Christopher R. EVP Finance CFO | AAward | +3.03K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-05 | McCourt Marion EVP Commercial | AAward | +2.48K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-05 | Van Plew Daniel P EVP & General Mgr, Industrial | AAward | +3.71K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-12-09 | 2025-12-05 | LAROSA JOSEPH J EVP General Counsel and Secret | AAward | +2.48K | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also REGN’s full analysis or the market-wide insider trading feed. The tabs above jump to REGN’s other SEC data.
Source: SEC Form 4 filings for REGN, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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