Western Standard LLC, Director at MERRIMACK PHARMACEUTICALS INC (MACK), bought 321,180 shares at $11.52 ($3.7M) on 2023-03-21, disclosed to the SEC on 2023-03-22.
Open-market purchase of $3.7M 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 C.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $11.52 | 33,181 | $382K | 10.3% |
| 2 | $11.52 | 33,181 | $382K | 10.3% |
| 3 | $11.52 | 127,409 | $1.5M | 39.7% |
| 4 | $11.52 | 127,409 | $1.5M | 39.7% |
| Total | $11.52 avg | 321,180 | $3.7M | 100% |
| Filing → |
| MACK | BUY | 2023-01-04 | $694K | — | Filing → |
| MACK | BUY | 2023-01-03 | $5.5M | — | Filing → |
| MACK | BUY | 2020-11-27 | $504K | — | Filing → |