Michael E. Porter, Director at MERRIMACK PHARMACEUTICALS INC (MACK), bought 5,000 shares at $7.65 ($38K) on 2016-03-15, disclosed to the SEC on 2016-03-17.
Open-market purchase of $38k 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 B.
Nothing distinguishes this filing.
| Filing → |
| MACK | BUY | 2016-03-04 | $159K | — | Filing → |
| MACK | BUY | 2016-03-02 | $122K | — | Filing → |
| MACK | BUY | 2015-08-25 | $49K | — | Filing → |