Newtyn Management 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 |
| 2024-01-25 4:05 pm Purchase | 2023-01-17 | 13D | Merrimack Pharmaceuticals, Inc. MACK | Newtyn Management LLC | 1,873,694 13.100% | 354,587 (+23.34%) | Filing |
| 2020-12-02 2:18 pm Purchase | 2020-11-24 | 13D | Merrimack Pharmaceuticals, Inc. MACK | Newtyn Management LLC | 1,519,107 11.400% | 142,227 (+10.33%) | Filing |
| 2020-07-24 5:42 pm Purchase | 2020-07-22 | 13D | Merrimack Pharmaceuticals, Inc. MACK | Newtyn Management LLC | 1,376,880 10.300% | 203,714 (+17.36%) | Filing |