Insider txns (12m)
203
Stock / equity
REGN REGENERON PHARMACEUTICALS, INC.
- Security
- Equity
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on record
- 20
- Members of Congress
- 3
- Latest trade on record
- October 14, 2026
REGN (REGENERON PHARMACEUTICALS, INC.) has 203 disclosed insider transactions from 19 insiders in the last 12 months (0 open-market buys, 130 sales, about $560.1M at reported prices) and 4 congressional trades from 3 members of Congress. The most recent disclosure was filed October 15, 2026.
Open-market buys / sales
0 / 130
Congress trades (12m)
4
Distinct filers (12m)
22
Share price
Price and chart by TradingView for REGENERON PHARMACEUTICALS, INC.. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
REGN in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
8 people account for the disclosed buying and selling in REGN over the last 12 months; the most active is SCHLEIFER LEONARD S with $131M.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 111 open-market trades in REGN since Oct 29, 2025, at prices from $650 to $857; the most recent was a sale at $754 on Oct 14, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
RYAN ARTHUR FMURPHY ANDREW J
RYAN ARTHUR F reported 17,303 shares held after the latest filing, against 17,903 at the first on record.
Lobbying spend by quarter
How much has REGENERON PHARMACEUTICALS, INC. reported spending on federal lobbying?
REGENERON PHARMACEUTICALS, INC. reported $4.2M in lobbying over the last eight quarters, from filings matched by exact company name.
Insiders trading REGN
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns. Showing 15 of 20.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| RYAN ARTHUR F | Director | 50 | 0 | 48 | — | $435K | July 2, 2026 |
| MURPHY ANDREW J | EVP Research | 38 | 0 | 31 | — | $38.2M | October 14, 2026 |
| Zoghbi Huda Y | Director | 18 | 0 | 12 | — | $1.9M | August 10, 2026 |
| Pitofsky Jason | SVP Controller | 17 | 0 | 13 | — | $2.6M | February 9, 2026 |
| POON CHRISTINE A | Director | 12 | 0 | 6 | — | $4.3M | January 2, 2026 |
| LAROSA JOSEPH J | EVP General Counsel and Secret | 9 | 0 | 3 | — | $17.8M | August 19, 2026 |
| Guarini Kathryn | Director | 8 | 0 | 2 | — | $660K | September 2, 2026 |
| Bassler Bonnie L | Director | 8 | 0 | 2 | — | $1.8M | January 7, 2026 |
| McCourt Marion | EVP Commercial | 6 | 0 | 4 | — | $3.7M | September 3, 2026 |
| Fenimore Christopher R. | EVP Finance CFO | 6 | 0 | 2 | — | $4.4M | August 18, 2026 |
| SCHLEIFER LEONARD S | Bd. Co-Chair, President & CEO | 6 | 0 | 2 | — | $130.9M | December 31, 2025 |
| YANCOPOULOS GEORGE | Bd. Co-Chair, President & CSO | 6 | 0 | 2 | — | $114.6M | December 31, 2025 |
| SING GEORGE L | Director | 5 | 0 | 1 | — | $4.8M | January 2, 2026 |
| Sanofi | Insider | 5 | 0 | 5 | — | $11.82B | June 9, 2020 |
| Van Plew Daniel P | EVP & General Mgr, Industrial | 4 | 0 | 2 | — | $3.1M | December 9, 2025 |
What kind of transactions these are 5 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| S | Open-market sale | 116 | 23,265,061 | $11.84B |
| M | Option exercise or conversion | 38 | 973,230 | $231.0M |
| A | Grant or award | 34 | 118,995 | — |
| F | Shares withheld for tax | 19 | 438,114 | $313.0M |
| G | Gift | 1 | 1,538 | — |
What each code means: Form 4 transaction codes.
Members of Congress trading REGN
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Gilbert Ray Cisneros, Jr. | Representative (CA, District 31), Democrat | 2 | 1 | 1 | $2,002–$30K | May 15, 2026 |
| Alan Armstrong | Senator (OK), Republican | 1 | 1 | 0 | $1,001–$15K | March 27, 2026 |
| Julia Letlow | Representative (LA, District 5), Republican | 1 | 1 | 0 | $1,001–$15K | February 12, 2026 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| MURPHY ANDREW J | Option / conversion M | October 13, 2026 | October 15, 2026 | 2d | 17,000 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 50 | $781 | $39K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 463 | $781 | $361K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 380 | $780 | $296K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 454 | $779 | $354K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 38 | $778 | $30K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 66 | $776 | $51K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 376 | $775 | $292K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 121 | $774 | $94K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 224 | $773 | $173K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 211 | $773 | $163K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 283 | $772 | $218K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 12 | $770 | $9,242 | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 127 | $769 | $98K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 105 | $768 | $81K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 192 | $767 | $147K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 279 | $766 | $214K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 271 | $765 | $207K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 219 | $764 | $167K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 25 | $764 | $19K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 55 | $763 | $42K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 27 | $761 | $21K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 74 | $761 | $56K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 14 | $760 | $11K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 24 | $758 | $18K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 16 | $758 | $12K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 35 | $756 | $26K | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell S | October 14, 2026 | October 15, 2026 | 1d | 6 | $754 | $4,523 | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Sell F | October 13, 2026 | October 15, 2026 | 2d | 12,853 | $755 | $9.7M | 10b5-1 plan | Form 4 ↗ | |
| MURPHY ANDREW J | Option / conversion M | October 13, 2026 | October 15, 2026 | 2d | 17,000 | $382 | $6.5M | 10b5-1 plan | Form 4 ↗ | |
| McCourt Marion | Sell S | September 3, 2026 | September 3, 2026 | 0d | 1,131 | $857 | $970K | 10b5-1 plan | Form 4 ↗ | |
| McCourt Marion | Sell S | September 2, 2026 | September 3, 2026 | 1d | 1,215 | $850 | $1.0M | 10b5-1 plan | Form 4 ↗ | |
| Guarini Kathryn | Option / conversion M | September 2, 2026 | September 3, 2026 | 1d | 400 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Guarini Kathryn | Sell S | September 2, 2026 | September 3, 2026 | 1d | 400 | $850 | $340K | 10b5-1 plan | Form 4 ↗ | |
| Guarini Kathryn | Option / conversion M | September 2, 2026 | September 3, 2026 | 1d | 400 | $719 | $288K | 10b5-1 plan | Form 4 ↗ | |
| LAROSA JOSEPH J | Option / conversion M | August 19, 2026 | August 21, 2026 | 2d | 12,282 | — | — | derivative | Form 4 ↗ | |
| LAROSA JOSEPH J | Sell F | August 19, 2026 | August 21, 2026 | 2d | 9,019 | $830 | $7.5M | Form 4 ↗ | ||
| LAROSA JOSEPH J | Option / conversion M | August 19, 2026 | August 21, 2026 | 2d | 12,282 | $382 | $4.7M | Form 4 ↗ | ||
| Fenimore Christopher R. | Option / conversion M | August 18, 2026 | August 20, 2026 | 2d | 6,283 | — | — | derivative | Form 4 ↗ | |
| Fenimore Christopher R. | Sell F | August 18, 2026 | August 20, 2026 | 2d | 4,599 | $813 | $3.7M | Form 4 ↗ | ||
| Fenimore Christopher R. | Option / conversion M | August 18, 2026 | August 20, 2026 | 2d | 6,283 | $382 | $2.4M | Form 4 ↗ | ||
| Guarini Kathryn | Option / conversion M | August 10, 2026 | August 12, 2026 | 2d | 400 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Guarini Kathryn | Sell S | August 10, 2026 | August 12, 2026 | 2d | 400 | $800 | $320K | 10b5-1 plan | Form 4 ↗ | |
| Guarini Kathryn | Option / conversion M | August 10, 2026 | August 12, 2026 | 2d | 400 | $719 | $288K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Option / conversion M | August 10, 2026 | August 12, 2026 | 2d | 800 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | August 10, 2026 | August 12, 2026 | 2d | 800 | $800 | $640K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Option / conversion M | August 10, 2026 | August 12, 2026 | 2d | 800 | $377 | $301K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | July 2, 2026 | July 7, 2026 | 5d | 200 | $650 | $130K | late10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 2 | $714 | $1,428 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 1 | $712 | $712 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 5 | $711 | $3,557 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 2 | $711 | $1,422 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 6 | $709 | $4,257 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 4 | $707 | $2,830 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 7 | $707 | $4,947 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 14 | $706 | $9,878 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 15 | $704 | $11K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 24 | $703 | $17K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 15 | $702 | $11K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | May 1, 2026 | May 4, 2026 | 3d | 5 | $702 | $3,509 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 40 | $780 | $31K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 4 | $778 | $3,113 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 9 | $777 | $6,997 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 13 | $777 | $10K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 14 | $776 | $11K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 8 | $775 | $6,197 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 8 | $774 | $6,189 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 3 | $773 | $2,318 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | April 1, 2026 | April 3, 2026 | 2d | 1 | $771 | $771 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 20 | $789 | $16K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 20 | $789 | $16K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 2 | $787 | $1,575 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 7 | $787 | $5,506 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 11 | $785 | $8,640 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 9 | $784 | $7,060 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 10 | $784 | $7,836 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 2 | $783 | $1,565 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 2 | $781 | $1,562 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 3 | $781 | $2,342 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 5 | $780 | $3,898 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 2 | $778 | $1,557 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | March 2, 2026 | March 3, 2026 | 1d | 7 | $777 | $5,442 | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Option / conversion M | February 19, 2026 | February 23, 2026 | 4d | 1,638 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 4 | $790 | $3,160 | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 56 | $786 | $44K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 160 | $784 | $126K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 220 | $783 | $172K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 298 | $782 | $233K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 209 | $781 | $163K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 331 | $780 | $258K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 208 | $780 | $162K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 53 | $778 | $41K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 50 | $776 | $39K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Sell S | February 19, 2026 | February 23, 2026 | 4d | 49 | $775 | $38K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Option / conversion M | February 19, 2026 | February 23, 2026 | 4d | 1,638 | $377 | $617K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Option / conversion M | February 9, 2026 | February 11, 2026 | 2d | 1,000 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 53 | $786 | $42K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $785 | $785 | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 144 | $783 | $113K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 37 | $783 | $29K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 26 | $781 | $20K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 75 | $780 | $59K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 205 | $780 | $160K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 563 | $778 | $438K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 391 | $778 | $304K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 521 | $776 | $405K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | February 9, 2026 | February 11, 2026 | 2d | 20 | $776 | $16K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Option / conversion M | February 9, 2026 | February 11, 2026 | 2d | 1,000 | $492 | $492K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $788 | $788 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 2 | $786 | $1,573 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $786 | $786 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $785 | $785 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 3 | $783 | $2,350 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $783 | $783 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 5 | $781 | $3,907 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $780 | $780 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 5 | $779 | $3,897 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 12 | $779 | $9,342 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 57 | $778 | $44K | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 10 | $777 | $7,766 | 10b5-1 plan | Form 4 ↗ | |
| RYAN ARTHUR F | Sell S | February 9, 2026 | February 11, 2026 | 2d | 1 | $776 | $776 | 10b5-1 plan | Form 4 ↗ | |
| Bassler Bonnie L | Option / conversion M | January 7, 2026 | January 8, 2026 | 1d | 1,500 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Bassler Bonnie L | Sell S | January 7, 2026 | January 8, 2026 | 1d | 1,500 | $800 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| Bassler Bonnie L | Option / conversion M | January 7, 2026 | January 8, 2026 | 1d | 1,500 | $374 | $561K | 10b5-1 plan | Form 4 ↗ | |
| Zoghbi Huda Y | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| Zoghbi Huda Y | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| Thompson Craig B. | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| Thompson Craig B. | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| SING GEORGE L | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| SING GEORGE L | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| Guarini Kathryn | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| Guarini Kathryn | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| Schenkein David P | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| Schenkein David P | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| GOLDSTEIN JOSEPH L | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| GOLDSTEIN JOSEPH L | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| RYAN ARTHUR F | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| RYAN ARTHUR F | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| COLES N ANTHONY | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| COLES N ANTHONY | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| BROWN MICHAEL S | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| BROWN MICHAEL S | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| Bassler Bonnie L | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| Bassler Bonnie L | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| POON CHRISTINE A | Other A | January 2, 2026 | January 6, 2026 | 4d | 1,962 | — | — | derivative | Form 4 ↗ | |
| POON CHRISTINE A | Other A | January 2, 2026 | January 6, 2026 | 4d | 155 | — | — | Form 4 ↗ | ||
| YANCOPOULOS GEORGE | Option / conversion M | December 31, 2025 | January 5, 2026 | 5d | 28,570 | — | — | latederivative | Form 4 ↗ | |
| YANCOPOULOS GEORGE | Sell F | December 31, 2025 | January 5, 2026 | 5d | 28,570 | $772 | $22.1M | late | Form 4 ↗ | |
| YANCOPOULOS GEORGE | Option / conversion M | December 31, 2025 | January 5, 2026 | 5d | 28,570 | — | — | late | Form 4 ↗ | |
| SCHLEIFER LEONARD S | Option / conversion M | December 31, 2025 | January 5, 2026 | 5d | 28,570 | — | — | latederivative | Form 4 ↗ | |
| SCHLEIFER LEONARD S | Sell F | December 31, 2025 | January 5, 2026 | 5d | 28,570 | $772 | $22.1M | late | Form 4 ↗ | |
| SCHLEIFER LEONARD S | Option / conversion M | December 31, 2025 | January 5, 2026 | 5d | 28,570 | — | — | late | Form 4 ↗ | |
| SING GEORGE L | Option / conversion M | December 30, 2025 | December 31, 2025 | 1d | 9,212 | — | — | derivative | Form 4 ↗ | |
| SING GEORGE L | Sell F | December 30, 2025 | December 31, 2025 | 1d | 6,188 | $774 | $4.8M | Form 4 ↗ | ||
| SING GEORGE L | Option / conversion M | December 30, 2025 | December 31, 2025 | 1d | 9,212 | $520 | $4.8M | Form 4 ↗ | ||
| Van Plew Daniel P | Sell F | December 9, 2025 | December 11, 2025 | 2d | 2,552 | $702 | $1.8M | Form 4 ↗ | ||
| MURPHY ANDREW J | Sell F | December 9, 2025 | December 11, 2025 | 2d | 4,229 | $702 | $3.0M | Form 4 ↗ | ||
| McCourt Marion | Sell F | December 9, 2025 | December 11, 2025 | 2d | 1,021 | $702 | $716K | Form 4 ↗ | ||
| YANCOPOULOS GEORGE | Option / conversion M | December 9, 2025 | December 11, 2025 | 2d | 146,815 | — | — | derivative | Form 4 ↗ | |
| YANCOPOULOS GEORGE | Sell F | December 9, 2025 | December 11, 2025 | 2d | 131,874 | $702 | $92.5M | Form 4 ↗ | ||
| YANCOPOULOS GEORGE | Option / conversion M | December 9, 2025 | December 11, 2025 | 2d | 146,815 | $556 | $81.6M | Form 4 ↗ | ||
| SCHLEIFER LEONARD S | Option / conversion M | December 9, 2025 | December 11, 2025 | 2d | 172,723 | — | — | derivative | Form 4 ↗ | |
| SCHLEIFER LEONARD S | Sell F | December 9, 2025 | December 11, 2025 | 2d | 155,145 | $702 | $108.8M | Form 4 ↗ | ||
| SCHLEIFER LEONARD S | Option / conversion M | December 9, 2025 | December 11, 2025 | 2d | 172,723 | $556 | $96.0M | Form 4 ↗ | ||
| Pitofsky Jason | Other A | December 5, 2025 | December 9, 2025 | 4d | 2,261 | — | — | derivative | Form 4 ↗ | |
| Pitofsky Jason | Sell F | December 8, 2025 | December 9, 2025 | 1d | 989 | $713 | $705K | Form 4 ↗ | ||
| Pitofsky Jason | Other A | December 5, 2025 | December 9, 2025 | 4d | 2,064 | — | — | Form 4 ↗ | ||
| Van Plew Daniel P | Other A | December 5, 2025 | December 9, 2025 | 4d | 18,315 | — | — | derivative | Form 4 ↗ | |
| Van Plew Daniel P | Sell F | December 8, 2025 | December 9, 2025 | 1d | 1,906 | $713 | $1.4M | Form 4 ↗ | ||
| Van Plew Daniel P | Other A | December 5, 2025 | December 9, 2025 | 4d | 3,715 | — | — | Form 4 ↗ | ||
| MURPHY ANDREW J | Other A | December 5, 2025 | December 9, 2025 | 4d | 18,315 | — | — | derivative | Form 4 ↗ | |
| MURPHY ANDREW J | Sell F | December 8, 2025 | December 9, 2025 | 1d | 1,699 | $713 | $1.2M | Form 4 ↗ | ||
| MURPHY ANDREW J | Other A | December 5, 2025 | December 9, 2025 | 4d | 3,715 | — | — | Form 4 ↗ | ||
| McCourt Marion | Other A | December 5, 2025 | December 9, 2025 | 4d | 12,210 | — | — | derivative | Form 4 ↗ | |
| McCourt Marion | Sell F | December 8, 2025 | December 9, 2025 | 1d | 1,336 | $713 | $952K | Form 4 ↗ | ||
| McCourt Marion | Other A | December 5, 2025 | December 9, 2025 | 4d | 2,476 | — | — | Form 4 ↗ | ||
| LAROSA JOSEPH J | Other A | December 5, 2025 | December 9, 2025 | 4d | 12,210 | — | — | derivative | Form 4 ↗ | |
| LAROSA JOSEPH J | Sell F | December 8, 2025 | December 9, 2025 | 1d | 1,396 | $713 | $995K | Form 4 ↗ | ||
| LAROSA JOSEPH J | Other A | December 5, 2025 | December 9, 2025 | 4d | 2,476 | — | — | Form 4 ↗ | ||
| Fenimore Christopher R. | Other A | December 5, 2025 | December 9, 2025 | 4d | 14,924 | — | — | derivative | Form 4 ↗ | |
| Fenimore Christopher R. | Sell F | December 8, 2025 | December 9, 2025 | 1d | 992 | $713 | $707K | Form 4 ↗ | ||
| Fenimore Christopher R. | Other A | December 5, 2025 | December 9, 2025 | 4d | 3,027 | — | — | Form 4 ↗ | ||
| LAROSA JOSEPH J | Option / conversion M | November 20, 2025 | November 24, 2025 | 4d | 14,450 | — | — | derivative | Form 4 ↗ | |
| LAROSA JOSEPH J | Sell F | November 20, 2025 | November 24, 2025 | 4d | 12,686 | $737 | $9.3M | Form 4 ↗ | ||
| LAROSA JOSEPH J | Option / conversion M | November 20, 2025 | November 24, 2025 | 4d | 14,450 | $556 | $8.0M | Form 4 ↗ | ||
| Bassler Bonnie L | Option / conversion M | November 20, 2025 | November 24, 2025 | 4d | 760 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| Bassler Bonnie L | Sell S | November 20, 2025 | November 24, 2025 | 4d | 760 | $750 | $570K | 10b5-1 plan | Form 4 ↗ | |
| Bassler Bonnie L | Option / conversion M | November 20, 2025 | November 24, 2025 | 4d | 760 | $371 | $282K | 10b5-1 plan | Form 4 ↗ | |
| Pitofsky Jason | Sell S | November 7, 2025 | November 10, 2025 | 3d | 431 | $651 | $281K | Form 4 ↗ | ||
| POON CHRISTINE A | Option / conversion M | October 30, 2025 | October 31, 2025 | 1d | 2,712 | — | — | derivative | Form 4 ↗ | |
| POON CHRISTINE A | Option / conversion M | October 29, 2025 | October 31, 2025 | 2d | 6,500 | — | — | derivative | Form 4 ↗ | |
| POON CHRISTINE A | Option / conversion M | October 30, 2025 | October 31, 2025 | 1d | 2,712 | $520 | $1.4M | Form 4 ↗ | ||
| POON CHRISTINE A | Sell S | October 29, 2025 | October 31, 2025 | 2d | 388 | $657 | $255K | Form 4 ↗ | ||
| POON CHRISTINE A | Sell S | October 29, 2025 | October 31, 2025 | 2d | 712 | $657 | $467K | Form 4 ↗ | ||
| POON CHRISTINE A | Sell S | October 29, 2025 | October 31, 2025 | 2d | 100 | $655 | $66K | Form 4 ↗ | ||
| POON CHRISTINE A | Sell S | October 29, 2025 | October 31, 2025 | 2d | 1,915 | $654 | $1.3M | Form 4 ↗ | ||
| POON CHRISTINE A | Sell S | October 29, 2025 | October 31, 2025 | 2d | 2,735 | $654 | $1.8M | Form 4 ↗ | ||
| POON CHRISTINE A | Sell S | October 29, 2025 | October 31, 2025 | 2d | 650 | $653 | $424K | Form 4 ↗ | ||
| POON CHRISTINE A | Option / conversion M | October 29, 2025 | October 31, 2025 | 2d | 6,500 | $520 | $3.4M | Form 4 ↗ | ||
| MURPHY ANDREW J | Option / conversion M | October 29, 2025 | October 31, 2025 | 2d | 35,000 | — | — | derivative | Form 4 ↗ |
Showing the 200 most recent of 208.
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Alan Armstrong | Buy | March 27, 2026 | July 21, 2026 | 116d | — | — | $1,001–$15K | late | Senate PTR ↗ | |
| Gilbert Ray Cisneros, Jr. | Sell | May 15, 2026 | June 8, 2026 | 24d | — | — | $1,001–$15K | House PTR ↗ | ||
| Julia Letlow | Buy | February 12, 2026 | March 12, 2026 | 28d | — | — | $1,001–$15K | House PTR ↗ | ||
| Gilbert Ray Cisneros, Jr. | Buy | November 18, 2025 | December 15, 2025 | 27d | — | — | $1,001–$15K | House PTR ↗ |
Related stocks
Tickers traded by the same people who traded REGN, by number of filers in common. It shows overlap in public filings and nothing else.
- META Meta Platforms, Inc. - Class A Common Stock 3 filers in common
- MU Micron Technology, Inc. - Common Stock 3 filers in common
- INTU Intuit Inc. - Common Stock 3 filers in common
- ADBE Adobe Inc. - Common Stock 3 filers in common
- WDAY Workday, Inc. - Class A Common Stock 3 filers in common
- NVDA NVIDIA Corporation - Common Stock 3 filers in common
- AMD Advanced Micro Devices, Inc. 3 filers in common
- ACN Accenture plc Class A Ordinary Shares 3 filers in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 3 | 3 | December 15, 2025 | June 8, 2026 | House Clerk search |
| Senate eFD, periodic transaction reports | 1 | 1 | July 21, 2026 | July 21, 2026 | Senate eFD search |
| SEC EDGAR, Form 4 | 49 | 208 | September 12, 2019 | October 15, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.