List of insiders holdings for REGENERON PHARMACEUTICALS INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | YANCOPOULOS GEORGE Bd. Co-Chair, President & CSO | 2026-01-05 17:54:51 | 905,537 815,485 | 1,721,022 | Form 4 |
| 2 | SCHLEIFER LEONARD S Bd. Co-Chair, President & CEO | 2026-01-05 17:53:17 | 809,600 473,458 | 1,283,058 | Form 4 |
| 3 | VAGELOS P ROY Director | 2023-04-05 16:02:23 | 312,578 154,526 | 467,104 | Form 4 |
| 4 | SANOFI-AVENTIS Sanofi-Aventis Amerique du Nord S.N.C. 10% Owner | 2020-06-17 17:10:15 | 279,766 0 | 279,766 | Form 13D |
| 5 | Sanofi 10% Owner | 2020-06-17 17:10:15 | 279,766 0 | 279,766 | Form 13D |
| 6 | GOLDBERG MURRAY A SVP Administration & Asst Secr | 2014-12-18 16:25:06 | 142,515 6,400 | 148,915 | Form 4 |
| 7 | RUPP RANDALL SVP, Manufuring Operations | 2007-04-17 14:25:18 | 142,137 0 | 142,137 | Form 4 |
| 8 | ROBERTS WILLIAM VP Reg Dev & Med Safety | 2014-02-06 16:41:18 | 16,644 55,634 | 72,278 | Form 5 |
| 9 | GULER HANS PETER VP Clinical Programs | 2004-10-12 12:02:08 | 67,152 0 | 67,152 | Form 4 |
| 10 | STAHL NEIL EVP Research and Development | 2024-12-18 16:02:59 | 48,829 10,454 | 59,283 | Form 4 |
| 11 | LAROSA JOSEPH J EVP General Counsel and Secret | 2025-12-09 16:09:43 | 41,727 12,798 | 54,525 | Form 4 |
| 12 | MURPHY ANDREW J EVP Research | 2025-12-11 16:32:45 | 47,833 4,375 | 52,208 | Form 4 |
| 13 | Fenimore Christopher R. EVP Finance CFO | 2025-12-09 16:08:22 | 33,224 3,495 | 36,719 | Form 4 |
| 14 | Landry Robert E EVP Finance CFO | 2024-02-06 16:08:17 | 35,480 270 | 35,750 | Form 4 |
| 15 | Van Plew Daniel P EVP & General Mgr, Industrial | 2025-12-11 16:34:24 | 21,673 13,505 | 35,178 | Form 4 |
| 16 | SING GEORGE L Director | 2026-01-06 16:16:18 | 32,969 2,150 | 35,119 | Form 4 |
| 17 | Powchik Peter SVP Clinical Development & Reg | 2016-12-19 16:15:06 | 30,714 4,133 | 34,847 | Form 4 |
| 18 | Terifay Robert J EVP Commercial | 2017-12-13 16:52:29 | 32,300 0 | 32,300 | Form 4 |
| 19 | Dworkin Peter VP Investor Relations & Commun | 2009-12-22 11:21:13 | 23,500 0 | 23,500 | Form 4 |
| 20 | SHOOTER ERIC M Director | 2014-02-13 19:38:09 | 15,000 5,085 | 20,085 | Form 4 |
| 21 | KOLINSKI STUART SVP General Counsel and Secret | 2010-06-07 16:14:10 | 16,329 3,710 | 20,039 | Form 4 |
| 22 | Aberman Michael S SVP Strategy Investor Relation | 2017-06-23 16:10:08 | 7,693 12,253 | 19,946 | Form 4 |
| 23 | RYAN ARTHUR F Director | 2026-01-06 16:12:18 | 19,865 0 | 19,865 | Form 4 |
| 24 | INGRAM ROBERT ALEXANDER Director | 2015-05-27 16:02:35 | 14,833 0 | 14,833 | Form 4 |
| 25 | BROWN MICHAEL S Director | 2026-01-06 16:10:05 | 3,665 11,162 | 14,827 | Form 4 |
| 26 | McCourt Marion EVP Commercial | 2025-12-11 16:30:49 | 14,349 197 | 14,546 | Form 4 |
| 27 | McCorkle Douglas S VP Controller and Asst Treasur | 2015-12-29 19:44:10 | 6,866 4,129 | 10,995 | Form 4 |
| 28 | GILMAN ALFRED G Director | 2015-08-07 18:15:04 | 8,912 0 | 8,912 | Form 4 |
| 29 | GOLDSTEIN JOSEPH L Director | 2026-01-06 16:13:21 | 8,665 0 | 8,665 | Form 4 |
| 30 | Pitofsky Jason VP Controller | 2025-12-09 17:38:25 | 7,569 210 | 7,779 | Form 4 |
| 31 | BAKER CHARLES A Director | 2018-01-03 16:14:21 | 7,439 0 | 7,439 | Form 4 |
| 32 | POON CHRISTINE A Director | 2026-01-06 16:03:32 | 7,181 0 | 7,181 | Form 4 |
| 33 | Bassler Bonnie L Director | 2026-01-08 16:03:19 | 4,564 0 | 4,564 | Form 4 |
| 34 | Tessier-Lavigne Marc Director | 2023-01-05 16:16:35 | 4,363 0 | 4,363 | Form 4 |
| 35 | COLES N ANTHONY Director | 2026-01-06 16:11:54 | 3,676 0 | 3,676 | Form 4 |
| 36 | Zoghbi Huda Y Director | 2026-01-06 16:21:24 | 3,665 0 | 3,665 | Form 4 |
| 37 | Thompson Craig B. Director | 2026-01-06 16:18:21 | 2,737 0 | 2,737 | Form 4 |
| 38 | Schenkein David P Director | 2026-01-06 16:14:06 | 2,565 0 | 2,565 | Form 4 |
| 39 | Guarini Kathryn Director | 2026-01-06 16:16:02 | 2,565 0 | 2,565 | Form 4 |
| 40 | NOVARTIS PHARMA AG 10% Owner | 2005-11-10 14:56:08 | 0 0 | 0 | Form 13G |