Vanguard Group Inc - Mar 31, 2025 SCHEDULE 13G/A Report for Mersana Therapeutics Inc Common Stock (MRSN)

Filing Manager: VANGUARD GROUP INC
Reporting Manager: The Vanguard Group
Security: Mersana Therapeutics Inc Common Stock
Symbol: MRSN
Shares outstanding: 125M shares
Disclosed Ownership: 8.38M shares
Ownership: 6.72%
Form type: SCHEDULE 13G/A
Date filed: 4/30/2025, 11:23 AM
Date of event: Mar 31, 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
The Vanguard Group	6.72%	8.38M	0	69.7K	Ashley Grim	Head of Global Fund Administration