Bonnie L. Bassler is Director at REGENERON PHARMACEUTICALS, INC. (REGN). They have made 11 open-market trades across 1 company since 2020, most recently 2026-06-30.
CIK 0001683607
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| REGN | SELL · 10b5-1 | 2026-01-07 | 2026-01-08 | $800.00 | $1.2M | -6.7% | -2.8% | -3.4% |
| REGN | SELL · 10b5-1 | 2025-11-20 | 2025-11-24 | $750.00 | $570K | -6.1% | +2.5% | +2.9% |
| REGN | SELL · 10b5-1 | 2024-08-15 | 2024-08-19 | $1170.00 | $885K | -1.5% | -4.9% | -36.3% |
| REGN | SELL · 10b5-1 | 2024-08-02 | 2024-08-05 | $1115.00 | $843K | +10.4% | +10.8% | -22.1% |
| REGN | SELL · 10b5-1 | 2024-06-24 | 2024-06-25 | $1062.00 | $803K | -1.4% | -0.3% | +2.3% |
| REGN | SELL · 10b5-1 | 2024-06-05 | 2024-06-07 | $1011.00 | $836K | +4.6% | +5.4% | +15.2% |
| REGN | SELL | 2024-02-26 | 2024-02-26 | $979.25 | $1.7M | -1.6% | -2.3% | -1.6% |
| REGN | SELL · 10b5-1 | 2024-01-30 | 2024-01-31 | $959.00 | $793K | +0.2% | +3.9% | -5.8% |
| REGN | SELL · 10b5-1 | 2024-01-03 | 2024-01-04 | $914.00 | $755K | +2.7% | +3.5% | +5.1% |
| REGN | SELL · 10b5-1 | 2023-12-13 | 2023-12-14 | $870.00 | $531K | -0.2% | +7.0% | +10.2% |
| REGN | SELL · 10b5-1 | 2023-08-21 | 2023-08-23 | $829.00 | $707K | -2.4% | -2.1% | -5.2% |
| REGN | SELL · 10b5-1 | 2023-08-10 | 2023-08-11 | $789.00 | $673K | +3.8% | +2.9% | -1.2% |
| REGN | SELL · 10b5-1 | 2023-03-24 | 2023-03-27 | $818.00 | $1.0M | +0.6% | -5.6% | -4.8% |
| REGN | SELL | 2023-02-03 | 2023-02-07 | $779.00 | $795K | -2.3% | -2.9% | -1.9% |
| REGN | SELL | 2022-12-08 | 2022-12-12 | $779.00 | $170K | -2.1% | -5.2% | +0.4% |
| REGN | SELL | 2022-09-08 | 2022-09-12 | $699.57 | $3.1M | -1.7% | +4.0% | +6.1% |
| REGN | SELL | 2022-04-07 | 2022-04-11 | $725.00 | $899K | -4.5% | -14.9% | -14.7% |
| REGN | SELL | 2022-03-30 | 2022-04-01 | $700.00 | $868K | +4.6% | -6.9% | -15.6% |
| REGN | SELL | 2021-08-16 | 2021-08-17 | $630.00 | $768K | +2.0% | +0.5% | -0.3% |
| REGN | SELL | 2021-08-05 | 2021-08-06 | $600.00 | $1.5M | +4.0% | +9.5% | +6.0% |
| REGN | SELL | 2021-07-01 | 2021-07-02 | $575.00 | $1.5M | +1.7% | -0.4% | +4.4% |
| REGN | SELL | 2020-06-19 | 2020-06-22 | $630.01 | $3.2M | -1.4% | +1.0% | -12.0% |
| REGN | SELL | 2020-06-05 | 2020-06-05 | $600.00 | $1.5M | +2.6% | +6.7% | -1.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.