Michael E. Porter, Director at MERRIMACK PHARMACEUTICALS INC (MACK), bought 5,000 shares at $6.12 ($31K) on 2014-05-05, disclosed to the SEC on 2014-05-07.
Open-market purchase of $31k MACK by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
| Filing → |
| MACK | BUY | 2016-03-10 | $71K | — | Filing → |
| MACK | BUY | 2016-03-04 | $159K | — | Filing → |
| MACK | BUY | 2016-03-02 | $122K | — | Filing → |