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 |