BlackRock, Inc. - 30 Jun 2025 SCHEDULE 13G/A Report for MERSANA THERAPEUTICS INC Common Stock (MRSN)

Filing Manager
BlackRock, Inc.
Reporting Manager
BlackRock, Inc.
Symbol
MRSN
Shares outstanding
125,395,867 shares
Disclosed Ownership
3,761,876 shares
Ownership
3%
Form type
SCHEDULE 13G/A
Filing time
17 Jul 2025, 19:54:39 UTC
Date of event
30 Jun 2025
Previous filing
17 Apr 2025

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
BlackRock, Inc. 3% 3,761,876 3,738,174 0 Spencer Fleming Managing Director