ORBIMED ADVISORS LLC 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 |
| 2024-02-14 6:55 pm Sale | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | ORBIMED ADVISORS LLC | 0 0.000% | -7,082,837 (Position Closed) | Filing |
| 2023-02-14 4:43 pm Purchase | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | ORBIMED ADVISORS LLC | 7,082,837 7.100% | 7,082,837 (New Position) | Filing |