Andrew A. F. Hack, Director at Mersana Therapeutics, Inc. (MRSN), bought 176,278 shares at $3.28 ($577K) on 2022-05-31, disclosed to the SEC on 2022-06-02.
Open-market purchase of $577k MRSN by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $3.28 | 80,759 | $265K | 45.9% |
| 2 | $3.28 | 80,759 | $265K | 45.9% |
| 3 | $3.20 | 14,760 | $47K | 8.2% |
| Total | $3.27 avg | 176,278 | $577K | 100% |
| Filing → |
| DVAX | SELL | 2023-08-10 | $21.6M | — | Filing → |
| DVAX | SELL | 2023-06-16 | $6.3M | — | Filing → |
| DVAX | SELL | 2023-05-19 | $10.6M | — | Filing → |