Janus Henderson Group Plc - Sep 30, 2025 SCHEDULE 13G/A Report for MEREO BIOPHARMA GROUP PLC American Depositary Shares (MREO)

Filing Manager
JANUS HENDERSON GROUP PLC
Reporting Manager
JANUS HENDERSON GROUP PLC
Security
MEREO BIOPHARMA GROUP PLC American Depositary Shares
Symbol
MREO
Shares outstanding
160M shares
Disclosed Ownership
16.3M shares
Ownership
10.2%
Form type
SCHEDULE 13G/A
Date filed
11/14/2025, 11:58 AM
Date of event
Sep 30, 2025
Previous filing
Aug 14, 2025
SEC
View on sec.gov

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
JANUS HENDERSON GROUP PLC 10.2% 16.3M 0 16.3M Kristin Mariani Head of North America Compliance, CCO
Janus Henderson Biotech Innovation Master Fund Ltd 8.7% 13.8M 0 13.8M Kristin Mariani Head of North America Compliance, CCO