State Street Corporation 13D and 13G filings for Mersana Therapeutics, 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 |
| 2024-01-22 1:36 pm Sale | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | STATE STREET CORP STT | 2,329,434 1.930% | -3,526,627 (-60.22%) | Filing |
| 2023-02-03 12:27 pm Purchase | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | STATE STREET CORP STT | 5,856,061 5.870% | 1,635,504 (+38.75%) | Filing |
| 2022-02-11 2:34 pm Purchase | 2021-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | STATE STREET CORP STT | 4,220,557 5.870% | 4,220,557 (New Position) | Filing |