Jason Aryeh, 10% Owner at MERRIMACK PHARMACEUTICALS INC (MACK), bought 302 shares at $5.44 ($2K) on 2019-07-16, disclosed to the SEC on 2019-07-18.
Open-market purchase of $2k MACK by 10% Owner. 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.
Negative factors outweigh the positive ones.
| Filing → |
| OBIO | BUY | 2026-05-19 | $35K | — | Filing → |
| LGND | SELL | 2025-09-24 | $3.4M | — | Filing → |
| OBIO | BUY | 2025-09-19 | $2K | — | Filing → |