MACK Insider Trading Activity and SEC Form 4 Filings
MACK insider trading summary
No open-market insider purchases or sales of Merrimack Pharmaceuticals Inc (MACK) have been reported on SEC Form 4 in the past 12 months.
Latest MACK insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Dec 28, 2023 | Western Standard Partners LP | Insider | Buy | $11K (857 @ $13.35) |
| Dec 28, 2023 | Western Standard LLC | Insider | Buy | $11K (857 @ $13.35) |
| Dec 28, 2023 | Western Standard Partners QP, L.P. | Insider | Buy | $11K (857 @ $13.35) |
| Dec 28, 2023 | Eric Andersen | Insider | Buy | $11K (857 @ $13.35) |
| Dec 26, 2023 | Eric Andersen | Insider | Buy | $640K (48,693 @ $13.15) |
| Dec 26, 2023 | Western Standard LLC | Insider | Buy | $640K (48,693 @ $13.15) |
| Dec 26, 2023 | Western Standard Partners QP, L.P. | Insider | Buy | $640K (48,693 @ $13.15) |
| Dec 26, 2023 | Western Standard Partners LP | Insider | Buy | $640K (48,693 @ $13.15) |
| Dec 7, 2023 | Western Standard LLC | Insider | Buy | $317K (24,666 @ $12.85) |
| Dec 7, 2023 | Eric Andersen | Insider | Buy | $982K (76,384 @ $12.85) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.