FMR LLC - 31 Oct 2025 SCHEDULE 13G/A Report for X4 Pharmaceuticals, Inc COMMON STOCK (XFOR)

Filing Manager
FMR LLC
Reporting Manager
FMR LLC
Symbol
XFOR
Shares outstanding
87,619,588 shares
Disclosed Ownership
8,499,100 shares
Ownership
9.7%
Form type
SCHEDULE 13G/A
Filing time
05 Feb 2026, 14:07:01 UTC
Date of event
31 Oct 2025

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
FMR LLC 9.7% 8,499,100 8,499,100 0 Stephanie J. Brown Duly authorized under Power of Attorney effective as of January 3, 2023, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Abigail P. Johnson 9.7% 8,499,100 0 0 Stephanie J. Brown Duly authorized under Power of Attorney effective as of January 26, 2023, by and on behalf of Abigail P. Johnson**