REGN
Regeneron Pharmaceuticals, Inc.
NASDAQ · Healthcare · Biotechnology · US
$827.72
−1.87%0
Insider buys (3m)
6
Insider sells (3m)
-$3.4M
Net value (3m)
+31.3%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Sep 3, 2026 | Guarini Kathryn · director | M-Exempt | 400 | $719 |
| Sep 3, 2026 | McCourt Marion · officer: EVP Commercial | Sale | 1,131 | $857 |
| Sep 3, 2026 | Guarini Kathryn · director | Sale | 400 | $850 |
| Sep 3, 2026 | McCourt Marion · officer: EVP Commercial | Sale | 1,215 | $850 |
| Aug 21, 2026 | LAROSA JOSEPH J · officer: EVP General Counsel and Secret | M-Exempt | 12,282 | $382 |
| Aug 21, 2026 | LAROSA JOSEPH J · officer: EVP General Counsel and Secret | F-InKind | 9,019 | $830 |
| Aug 20, 2026 | Fenimore Christopher R. · officer: EVP Finance CFO | M-Exempt | 6,283 | $382 |
| Aug 20, 2026 | Fenimore Christopher R. · officer: EVP Finance CFO | F-InKind | 4,599 | $813 |
| Aug 12, 2026 | Guarini Kathryn · director | Sale | 400 | $800 |
| Aug 12, 2026 | Guarini Kathryn · director | M-Exempt | 400 | $719 |
| Aug 12, 2026 | Zoghbi Huda Y · director | M-Exempt | 800 | $377 |
| Aug 12, 2026 | Zoghbi Huda Y · director | Sale | 800 | $800 |
| Jul 7, 2026 | RYAN ARTHUR F · director | Sale | 200 | $650 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 24 | $703 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 5 | $702 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 7 | $707 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 1 | $712 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 15 | $702 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 14 | $706 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 6 | $709 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 4 | $707 |
| May 4, 2026 | RYAN ARTHUR F · director | Sale | 2 | $711 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 13 | $777 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 40 | $780 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 1 | $771 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 4 | $778 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 14 | $776 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 9 | $777 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 3 | $773 |
| Apr 3, 2026 | RYAN ARTHUR F · director | Sale | 8 | $774 |
Institutional positioning
13F filings over the trailing two quarters
New 261Increased 1051Reduced 1026Sold out 175
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 9,113,506 | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 8,947,735 | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6,654,913 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 6,629,759 | Aug 13, 2026 |
| DODGE & COX | Increased | 4,871,137 | Aug 13, 2026 |
| STATE STREET CORP | Increased | 4,834,688 | Aug 7, 2026 |
| STATE STREET CORP | Increased | 4,664,478 | May 15, 2026 |
| DODGE & COX | Reduced | 4,458,238 | May 14, 2026 |
| JPMORGAN CHASE & CO | Increased | 4,311,806 | May 13, 2026 |
| Invesco Ltd. | Increased | 3,940,665 | Aug 14, 2026 |
| JPMORGAN CHASE & CO | Reduced | 3,774,199 | Aug 12, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3,175,313 | Aug 13, 2026 |
| FRANKLIN RESOURCES INC | Increased | 2,771,839 | Aug 13, 2026 |
| FRANKLIN RESOURCES INC | Increased | 2,722,071 | May 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 2,625,810 | Aug 12, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 3, 2026