Andrew A. F. Hack, Director at Mersana Therapeutics, Inc. (MRSN), bought 1,234,568 shares at $4.05 ($5.0M) on 2022-04-13, disclosed to the SEC on 2022-04-14.
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 C.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $4.05 | 617,284 | $2.5M | 50.0% |
| 2 | $4.05 | 617,284 | $2.5M | 50.0% |
| Total | $4.05 avg | 1,234,568 | $5.0M | 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 → |