Western Standard, LLC 13D and 13G filings for Merrimack Pharmaceuticals, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2023-12-13 4:05 pm Purchase |
2023-12-07 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Western Standard, LLC | 2,220,058 15.500% |
228,950 (+11.50%) |
Filing |
| 2023-08-14 4:05 pm Purchase |
2022-12-29 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Western Standard, LLC | 1,991,108 13.900% |
802,263 (+67.48%) |
Filing |
| 2020-12-02 7:21 pm Purchase |
2020-11-24 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Western Standard, LLC | 1,188,845 8.900% |
142,217 (+13.59%) |
Filing |
| 2020-07-23 8:44 pm Purchase |
2020-07-22 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Western Standard, LLC | 1,046,628 7.800% |
203,715 (+24.17%) |
Filing |