MERRIMACK PHARMACEUTICALS INC (MACK) has 164 open-market insider trades by 33 insiders since 2012. The most active filer is Gary L. Crocker.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Western Standard LLC via Eric Andersen | Dir | — | 9 | $11.2M | 2023-11-09 |
| Eric Andersen | Dir | — | 7 | $9.4M | 2023-12-28 |
| Gary L. Crocker | — | — | 44 | $4.8M | 2023-08-11 |
| Robert J. Mulroy | Pres | — | 4 | $3.5M | 2015-03-24 |
| Michael E. Porter | Dir | — | 29 | $3.1M | 2017-03-10 |
| Western Standard Partners L.P. | Dir | — | 6 | $2.3M | 2023-11-17 |
| Newtyn Partners, L.P. | Dir | — | 5 | $2.0M | 2023-01-12 |
| Western Standard Partners QP, L.P. | Dir | — | 3 | $1.7M | 2021-07-01 |
| Ulrik B. Nielsen | Dir | — | 6 | $1.4M | 2022-01-24 |
| 22NW Fund, LP | 10% Owner | — | 2 | $1.4M | 2019-04-17 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Eric Andersen | Director | Buy | $1.3M | 2023-12-26 |
| Eric Andersen | Director | Buy | $2.6M | 2023-12-07 |
| Western Standard Partners L.P. | — | Buy | $4K | 2023-11-17 |
| Western Standard Partners L.P. | Director | Buy | $1.3M | 2023-11-14 |
| Eric Andersen | Director | Buy | $1.3M | 2023-11-10 |
| Western Standard LLC | Director | Buy | $552K |
Companies that share insiders with MACK, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| 2023-11-08 |
| Gary L. Crocker | — | Buy | $50K | 2023-08-10 |
| Eric Andersen | Director | Buy | $2.7M | 2023-08-07 |
| Western Standard LLC | Director | Buy | $3.7M | 2023-03-21 |
| Eric Andersen | Director | Buy | $362K | 2023-01-30 |
| Western Standard LLC | Director | Buy | $139K | 2023-01-30 |
| Western Standard Partners L.P. | Director | Buy | $249K | 2023-01-27 |
| Newtyn Partners, L.P. | Director | Buy | $1.2M | 2023-01-12 |
| Ana Radeljevic | Director | Buy | $50K | 2023-01-06 |
| Western Standard LLC | Director | Buy | $694K | 2023-01-03 |