BlackRock, Inc. 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 |
| 2024-03-07 12:29 pm Sale | 2024-02-29 | 13G | Merrimack Pharmaceuticals, Inc. MACK | BlackRock Inc. BLK | 715,279 4.990% | -28,344 (-3.81%) | Filing |
| 2024-01-31 2:08 pm Purchase | 2023-12-31 | 13G | Merrimack Pharmaceuticals, Inc. MACK | BlackRock Inc. BLK | 743,623 5.200% | 422,576 (+131.62%) | Filing |