Samuel C. Blackman is HEAD OF R&D at Day One Biopharmaceuticals, Inc. (DAWN). They have made 22 open-market trades across 1 company since 2021, most recently 2024-12-10.
CIK 0001863676
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 22 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DAWN | 1,034,015 | $22.2M |
Shares reported on the most recent Form 4, priced at the 2024-12-12 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DAWN | SELL · 10b5-1 | 2024-12-10 | 2024-12-12 | $13.31 | $399K | -0.5% | -9.2% | -31.0% |
| DAWN | SELL | 2024-11-18 | 2024-11-19 | $13.21 | $29K | +2.7% | -7.5% | -11.4% |
| DAWN | SELL · 10b5-1 | 2024-11-08 | 2024-11-12 | $16.15 | $751K | -13.4% | -19.1% | -25.1% |
| DAWN | SELL · 10b5-1 | 2024-11-07 | 2024-11-08 | $16.03 | $361K | -17.2% | -18.1% | -24.0% |
| DAWN | SELL · 10b5-1 | 2024-10-31 | 2024-11-04 | $16.02 | $8K | -2.3% | -5.8% | -17.6% |
| DAWN | SELL · 10b5-1 | 2024-09-10 | 2024-09-12 | $14.22 | $427K | +4.2% | +3.9% | -4.4% |
| DAWN | SELL | 2024-08-16 | 2024-08-19 | $14.00 | $31K | -2.5% | -1.6% | -7.2% |
| DAWN | SELL · 10b5-1 | 2024-07-16 | 2024-07-17 | $16.01 | $640K | -1.5% | -10.7% | -4.9% |
| DAWN | SELL · 10b5-1 | 2024-06-10 | 2024-06-12 | $12.62 | $379K | +3.3% | +17.3% | +10.6% |
| DAWN | SELL | 2024-05-16 | 2024-05-17 | $16.08 | $36K | -15.9% | -25.6% | -12.0% |
| DAWN | SELL · 10b5-1 | 2024-05-10 | 2024-05-14 | $16.37 | $164K | -18.5% | -23.5% | -20.1% |
| DAWN | SELL · 10b5-1 | 2024-04-18 | 2024-04-22 | $16.02 | $160K | +12.8% | -6.2% | -4.6% |
| DAWN | SELL · 10b5-1 | 2024-03-25 | 2024-03-26 | $16.01 | $320K | -9.9% | -14.8% | -12.7% |
| DAWN | SELL · 10b5-1 | 2024-03-11 | 2024-03-13 | $15.24 | $457K | +1.8% | -6.7% | -15.0% |
| DAWN | SELL · 10b5-1 | 2024-02-27 | 2024-02-28 | $16.11 | $322K | -12.0% | -6.2% | -21.0% |
| DAWN | SELL | 2024-02-16 | 2024-02-20 | $15.25 | $34K | +18.3% | +2.0% | +8.2% |
| DAWN | SELL | 2023-11-16 | 2023-11-17 | $11.69 | $8K | -5.3% | +15.9% | +25.6% |
| DAWN | SELL | 2023-08-17 | 2023-08-17 | $13.86 | $9K | +0.4% | +3.8% | -10.8% |
| DAWN | SELL · 10b5-1 | 2023-06-05 | 2023-06-07 | $16.00 | $20K | -3.6% | -19.1% | -1.6% |
| DAWN | SELL | 2023-05-16 | 2023-05-17 | $13.12 | $9K | -9.2% | +0.1% | +4.1% |
| DAWN | SELL | 2023-03-10 | 2023-03-14 | $18.05 | $181K | -17.8% | -29.2% | -32.7% |
| DAWN | SELL | 2023-02-16 | 2023-02-17 | $19.57 | $13K | -6.8% | -7.1% | -33.8% |
| DAWN | SELL | 2023-02-10 | 2023-02-13 | $20.07 | $201K | -10.4% | -7.0% | -30.8% |
| DAWN | SELL | 2023-01-10 | 2023-01-11 | $22.86 | $229K | -3.8% | -13.1% | -44.3% |
| DAWN | SELL | 2022-12-01 | 2022-12-05 | $21.45 | $215K | +1.4% | -0.8% | -13.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.