Andrew A. F. Hack, Director at Mersana Therapeutics, Inc. (MRSN), bought 875,000 shares at $5.75 ($5.0M) on 2021-12-29, disclosed to the SEC on 2022-01-03.
Open-market purchase of $5.0M 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 B.
Nothing distinguishes this filing.
| 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 → |