REGENERON PHARMACEUTICALS, INC.
Total Trades
254
Buys
0
Sells
157
Largest Trade
N/A
Insiders
20
Institutional Funds
1,228
Inst. Value
$1M+
Activist Filings
15
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| RYAN ARTHUR F | Director | SELL | $50K–$100K | 100 | $785.50 | Mar 3, 2026 |
| Zoghbi Huda Y | Director | SELL | $1M+ | 2K | $781.33 | Feb 23, 2026 |
| Zoghbi Huda Y | Director | EXERCISE | $500K+ | 2K | $376.69 | Feb 23, 2026 |
| Pitofsky Jason | SVP Controller | SELL | $1M+ | 2K | $778.52 | Feb 11, 2026 |
| Pitofsky Jason | SVP Controller | EXERCISE | $100K–$500K | 1K | $492.00 | Feb 11, 2026 |
| RYAN ARTHUR F | Director | SELL | $50K–$100K | 100 | $778.53 | Feb 11, 2026 |
| Bassler Bonnie L | Director | EXERCISE | $500K+ | 2K | $374.12 | Jan 8, 2026 |
| Bassler Bonnie L | Director | SELL | $1M+ | 2K | $800.00 | Jan 8, 2026 |
| Bassler Bonnie L | Director | EXERCISE | $100K–$500K | 760 | $371.40 | Nov 24, 2025 |
| Bassler Bonnie L | Director | SELL | $500K+ | 760 | $750.00 | Nov 24, 2025 |
| Pitofsky Jason | VP Controller | SELL | $100K–$500K | 431 | $651.43 | Nov 10, 2025 |
| POON CHRISTINE A | Director | EXERCISE | $1M+ | 9K | $520.01 | Oct 31, 2025 |
| POON CHRISTINE A | Director | SELL | $1M+ | 7K | $654.27 | Oct 31, 2025 |
| McCourt Marion | EVP Commercial | EXERCISE | $100K–$500K | 1K | $381.40 | Nov 5, 2024 |
| McCourt Marion | EVP Commercial | SELL | $500K+ | 1K | $844.61 | Nov 5, 2024 |
| RYAN ARTHUR F | Director | SELL | $100K–$500K | 100 | $1048.78 | Oct 3, 2024 |
| McCourt Marion | EVP Commercial | EXERCISE | $100K–$500K | 1K | $381.40 | Oct 3, 2024 |
| McCourt Marion | EVP Commercial | SELL | $1M+ | 1K | $1054.06 | Oct 3, 2024 |
| Fenimore Christopher R. | SVP Finance & CFO | SELL | $1M+ | 6K | $1205.33 | Aug 29, 2024 |
| Bassler Bonnie L | Director | EXERCISE | $100K–$500K | 756 | $371.40 | Aug 19, 2024 |
| Bassler Bonnie L | Director | SELL | $500K+ | 756 | $1170.00 | Aug 19, 2024 |
| POON CHRISTINE A | Director | SELL | $1M+ | 11K | $1158.17 | Aug 19, 2024 |
| POON CHRISTINE A | Director | EXERCISE | $1M+ | 11K | $413.33 | Aug 19, 2024 |
| McCourt Marion | EVP Commercial | EXERCISE | $100K–$500K | 1K | $372.46 | Jul 2, 2024 |
| McCourt Marion | EVP Commercial | SELL | $1M+ | 1K | $1047.11 | Jul 2, 2024 |
| RYAN ARTHUR F | Director | SELL | $100K–$500K | 100 | $1059.24 | Jul 2, 2024 |
| Bassler Bonnie L | Director | SELL | $500K+ | 756 | $1062.00 | Jun 25, 2024 |
| Bassler Bonnie L | Director | EXERCISE | $100K–$500K | 756 | $371.40 | Jun 25, 2024 |
| BROWN MICHAEL S | Director | EXERCISE | $500K+ | 2K | $625.60 | Jun 17, 2024 |
| BROWN MICHAEL S | Director | SELL | $1M+ | 2K | $1040.00 | Jun 17, 2024 |
| SCHLEIFER LEONARD S | Bd. Co-Chair | SELL | $1M+ | 25K | $1015.75 | Jun 13, 2024 |
| SCHLEIFER LEONARD S | Bd. Co-Chair | SELL | $500K+ | 787 | $1015.02 | Jun 10, 2024 |
| Bassler Bonnie L | Director | SELL | $500K+ | 827 | $1011.00 | Jun 7, 2024 |
| Bassler Bonnie L | Director | EXERCISE | $100K–$500K | 827 | $380.95 | Jun 7, 2024 |
| McCourt Marion | EVP Commercial | SELL | $1M+ | 1K | $980.16 | Jun 5, 2024 |
| McCourt Marion | EVP Commercial | EXERCISE | $100K–$500K | 1K | $372.46 | Jun 5, 2024 |
| RYAN ARTHUR F | Director | SELL | $50K–$100K | 100 | $994.50 | Jun 5, 2024 |
| BROWN MICHAEL S | Director | SELL | $1M+ | 1K | $974.86 | May 29, 2024 |
| BROWN MICHAEL S | Director | EXERCISE | $500K+ | 1K | $625.60 | May 29, 2024 |
| McCourt Marion | EVP Commercial | SELL | $100K–$500K | 250 | $889.41 | May 3, 2024 |
| RYAN ARTHUR F | Director | SELL | $50K–$100K | 100 | $899.61 | May 3, 2024 |
| YANCOPOULOS GEORGE | Bd. Co-Chair | SELL | $1M+ | 17K | $900.00 | May 1, 2024 |
| RYAN ARTHUR F | Director | SELL | $50K–$100K | 100 | $962.53 | Apr 3, 2024 |
| McCourt Marion | EVP Commercial | SELL | $100K–$500K | 250 | $964.73 | Apr 3, 2024 |
| LAROSA JOSEPH J | EVP General Counse… | SELL | $500K+ | 1K | $990.00 | Feb 28, 2024 |
| SING GEORGE L | Director | SELL | $500K+ | 1K | $992.50 | Feb 28, 2024 |
| SING GEORGE L | Director | EXERCISE | $100K–$500K | 1K | $413.33 | Feb 28, 2024 |
| Bassler Bonnie L | Director | SELL | $500K+ | 854 | $979.25 | Feb 26, 2024 |
| Bassler Bonnie L | Director | EXERCISE | $100K–$500K | 854 | $391.92 | Feb 26, 2024 |
| LAROSA JOSEPH J | EVP General Counse… | SELL | $500K+ | 1K | $967.65 | Feb 26, 2024 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 1,228 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 4.7M | $1M+ | SH |
| DODGE & COX | 4.6M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $1M+ | SH |
| LOOMIS SAYLES & CO L P | 1.7M | $1M+ | SH |
| Capital World Investors | 1.4M | $1M+ | SH |
| NORGES BANK | 1.3M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 778K | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 551K | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 478K | $1M+ | SH |
| ACADIAN ASSET MANAGEMENT LLC | 446K | $1M+ | SH |
| BNP PARIBAS FINANCIAL MARKETS | 441K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 423K | $1M+ | SH |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 421K | $1M+ | SH |
| Neuberger Berman Group LLC | 417K | $1M+ | SH |
| Centiva Capital, LP | 407K | $1M+ | SH (Call) |
| Pacer Advisors, Inc. | 398K | $1M+ | SH |
| TD ASSET MANAGEMENT INC | 398K | $1M+ | SH |
| Pictet Asset Management Holding SA | 368K | $1M+ | SH |
| National Pension Service | 361K | $1M+ | SH |
| CAISSE DE DEPOT ET PLACEMENT DU QUEBEC | 342K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Aug 6, 2025
3.2%
3.4M shares
SC 13G/A · Jun 5, 2025
4.4%
4.7M shares
SC 13G/A · Apr 22, 2025
5.1%
5.5M shares
SC 13G/A · Feb 12, 2025
7.6%
8.2M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
8.3%
8.8M shares
Capital World Investors 95-1411037
SC 13G/A · Feb 9, 2024
4.8%
5.2M shares
SC 13G/A · Jan 25, 2024
8.1%
8.6M shares
JPMORGAN CHASE & CO. 13-2624428
SC 13G/A · Jan 25, 2024
6.7%
7.2M shares
JPMORGAN CHASE & CO. 13-2624428
SC 13G/A · Jan 25, 2024
6.7%
7.2M shares
Capital World Investors 95-1411037
SC 13G/A · Feb 13, 2023
5.9%
6.3M shares
SC 13G/A · Feb 3, 2023
8.6%
9.2M shares
JPMORGAN CHASE & CO. 13-2624428
SC 13G · Jan 11, 2023
5.6%
6.1M shares
SC 13G/A · Oct 11, 2022
10.1%
10.8M shares
Capital World Investors 95-1411037
SC 13G/A · Feb 11, 2022
5.1%
5.4M shares
SC 13G/A · Feb 1, 2022
9.1%
9.6M shares