Bonnie L Bassler insider trades: Regeneron Pharmaceuticals (REGN) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Bonnie reports to the SEC
Open-market buys and sales
23 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 7, 2026 | REGN | ↓ Sell | 1,500 | $800.00 | $1.2M | Direct | Jan 8, 2026 (1d) |
| Nov 20, 2025 | REGN | ↓ Sell | 760 | $750.00 | $570K | Direct | Nov 24, 2025 (4d) |
| Aug 15, 2024 | REGN | ↓ Sell | 756 | $1170.00 | $885K | Direct | Aug 19, 2024 (4d) |
| Aug 2, 2024 | REGN | ↓ Sell | 756 | $1115.00 | $843K | Direct | Aug 5, 2024 (3d) |
| Jun 24, 2024 | REGN | ↓ Sell | 756 | $1062.00 | $803K | Direct | Jun 25, 2024 (1d) |
| Jun 5, 2024 | REGN | ↓ Sell | 827 | $1011.00 | $836K | Direct | Jun 7, 2024 (2d) |
| Feb 26, 2024 | REGN | ↓ Sell | 854 | $979.25 | $836K | Direct | Feb 26, 2024 (0d) |
| Jan 30, 2024 | REGN | ↓ Sell | 827 | $959.00 | $793K | Direct | Jan 31, 2024 (1d) |
| Jan 3, 2024 | REGN | ↓ Sell | 826 | $914.00 | $755K | Direct | Jan 4, 2024 (1d) |
| Dec 13, 2023 | REGN | ↓ Sell | 610 | $870.00 | $531K | Direct | Dec 14, 2023 (1d) |
| Aug 21, 2023 | REGN | ↓ Sell | 853 | $829.00 | $707K | Direct | Aug 23, 2023 (2d) |
| Aug 10, 2023 | REGN | ↓ Sell | 853 | $789.00 | $673K | Direct | Aug 11, 2023 (1d) |
| Mar 24, 2023 | REGN | ↓ Sell | 1,240 | $818.00 | $1.0M | Direct | Mar 27, 2023 (3d) |
| Feb 3, 2023 | REGN | ↓ Sell | 1,021 | $779.00 | $795K | Direct | Feb 7, 2023 (4d) |
| Dec 8, 2022 | REGN | ↓ Sell | 218 | $779.00 | $170K | Direct | Dec 12, 2022 (4d) |
| Sep 9, 2022 | REGN | ↓ Sell | 3,167 | $704.65 | $2.2M | Direct | Sep 12, 2022 (3d) |
| Apr 7, 2022 | REGN | ↓ Sell | 1,240 | $725.00 | $899K | Direct | Apr 11, 2022 (4d) |
| Mar 30, 2022 | REGN | ↓ Sell | 1,240 | $700.00 | $868K | Direct | Apr 1, 2022 (2d) |
| Aug 16, 2021 | REGN | ↓ Sell | 1,219 | $630.00 | $768K | Direct | Aug 17, 2021 (1d) |
| Aug 5, 2021 | REGN | ↓ Sell | 2,559 | $600.00 | $1.5M | Direct | Aug 6, 2021 (1d) |
| Jul 1, 2021 | REGN | ↓ Sell | 2,558 | $575.00 | $1.5M | Direct | Jul 2, 2021 (1d) |
| Jun 19, 2020 | REGN | ↓ Sell | 2,559 | $630.02 | $1.6M | Direct | Jun 22, 2020 (3d) |
| Jun 5, 2020 | REGN | ↓ Sell | 2,559 | $600.00 | $1.5M | Direct | Jun 5, 2020 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other REGN insiders
Open-market trades in the last 12 months
About Bonnie L Bassler's insider trades
Bonnie L Bassler is a director at Regeneron Pharmaceuticals (REGN). Since Jun 5, 2020, Bonnie has reported no open-market purchases and 23 sales worth $22.3M on SEC Form 4. In the last 12 months: 2 sales ($1.8M).
Their filings also include grants and awards (52 filings), option exercises (23 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every REGN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.