Western Standard Partners L.P., Director at MERRIMACK PHARMACEUTICALS INC (MACK), bought 21,875 shares at $11.40 ($249K) on 2023-01-27, disclosed to the SEC on 2023-01-31.
Open-market purchase of $249k MACK 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 | $11.40 | 4,410 | $50K | 20.2% |
| 2 | $11.40 | 17,465 | $199K | 79.8% |
| Total | $11.40 avg | 21,875 | $249K | 100% |
| Filing → |
| MACK | BUY | 2021-04-16 | $584K | — | Filing → |
| MACK | BUY | 2021-04-15 | $124K | — | Filing → |
| MACK | BUY | 2020-04-07 | $46K | — | Filing → |