BlackRock, Inc. - 31 Dec 2024 SCHEDULE 13G/A Report for MERSANA THERAPEUTICS INC Common Stock (MRSN)

Filing Manager: BlackRock, Inc.
Reporting Manager: BlackRock, Inc.
Security: MERSANA THERAPEUTICS INC Common Stock
Symbol: MRSN
Shares outstanding: 115,064,775 shares
Disclosed Ownership: 9,205,182 shares
Ownership: 8%
Form type: SCHEDULE 13G/A
Filing time: 05 Feb 2025, 13:23:37 UTC
Date of event: 31 Dec 2024
Next filing: 17 Apr 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock, Inc.	8%	9,205,182	9,105,191	0	Spencer Fleming	Managing Director