Schedule 13G ownership disclosure
MERSANA THERAPEUTICS INC
Common Stock · CUSIP: 59045L205
Event date: 2025-12-31
- Filing-level shares
- 210,301
- Percent of class
- 4.20%
- The Vanguard Group
Shares: 210,301 · Class: 4.20%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0000102909-26-000157
- Form type
- SCHEDULE 13G/A
- Filer
- Mersana Therapeutics, Inc.
- CIK
- CIK 1442836
- Filed
- Jan 30, 2026
- Reporting period
- Dec 31, 2025
- Description
- Schedule 13G beneficial ownership