PERCEPTIVE ADVISORS LLC - 27 Oct 2025 SCHEDULE 13G Report for X4 PHARMACEUTICALS, INC. Common Stock, par value $0.001 per share (XFOR)

Filing Manager
PERCEPTIVE ADVISORS LLC
Reporting Manager
Perceptive Advisors LLC
Security
X4 PHARMACEUTICALS, INC. Common Stock, par value $0.001 per share
Symbol
XFOR
Shares outstanding
79,798,421 shares
Disclosed Ownership
6,064,680 shares
Ownership
7.6%
Form type
SCHEDULE 13G
Filing time
03 Nov 2025, 16:09:43 UTC
Date of event
27 Oct 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Perceptive Advisors LLC 7.6% 6,064,680 0 6,064,680 /s/ Joseph Edelman Joseph Edelman, Managing Member
Joseph Edelman 7.6% 6,064,680 0 6,064,680 /s/ Joseph Edelman Joseph Edelman
Perceptive Life Sciences Master Fund, Ltd. 7.6% 6,064,680 0 6,064,680 /s/ Joseph Edelman Joseph Edelman, Managing Member