David M. Epstein is SEE REMARKS at Black Diamond Therapeutics, Inc. (BDTX). They have made 4 open-market trades across 1 company since 2020, most recently 2023-06-27.
CIK 0001488668
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 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BDTX | SELL · 10b5-1 | 2023-06-27 | 2023-06-28 | $6.70 | $168K | -3.1% | -30.1% | -44.3% |
| BDTX | SELL | 2021-01-04 | 2021-01-06 | $31.06 | $683K | -19.5% | -15.1% | -28.5% |
| BDTX | SELL | 2020-12-01 | 2020-12-03 | $32.68 | $749K | +5.1% | -1.5% | -21.7% |
| BDTX | SELL | 2020-11-02 | 2020-11-03 | $31.13 | $745K | +1.5% | +0.2% | -25.7% |
| BDTX | SELL | 2020-10-01 | 2020-10-02 | $30.33 | $364K | +7.1% | +2.7% | +4.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.