X4 Pharmaceuticals, Inc. (XFOR)
NASDAQ: XFOR · Real-Time Price · USD
4.120
-0.090 (-2.14%)
At close: Apr 28, 2026, 4:00 PM EDT
4.130
+0.010 (0.24%)
After-hours: Apr 28, 2026, 7:32 PM EDT

Company Description

X4 Pharmaceuticals, Inc., a biopharmaceutical company, focuses on the research, development, and commercialization of novel therapeutics for the treatment of rare diseases of the immune system.

It offers XOLREMDI, an orally small-molecule selective antagonist of chemokine receptor CXCR4, which is in phase 3 clinical trial for the treatment of patients with warts, hypogammaglobulinemia, infections, and myelokathexis syndrome.

It has a license agreement with Abbisko Therapeutics Co Ltd. to manufacture and distribute XOLREMDI in mainland China, Taiwan, Hong Kong and Macau; Norgine to develop, manufacture, and commercialize mavorixafor in Europe, Australia, and New Zealand; and Genzyme Corporation for CXCR4 receptor to develop and commercialize products containing licensed compounds for all therapeutic, prophylactic and diagnostic uses.

The company is headquartered in Boston, Massachusetts.

X4 Pharmaceuticals, Inc.
X4 Pharmaceuticals logo
Country United States
Founded 2014
Industry Biotechnology
Sector Healthcare
Employees 45
CEO Paula Ragan

Contact Details

Address:
61 North Beacon Street, 4th Floor
Boston, Massachusetts 02134
United States
Phone 857 529 8300
Website x4pharma.com

Stock Details

Ticker Symbol XFOR
Exchange NASDAQ
Fiscal Year January - December
Reporting Currency USD
CIK Code 0001501697
CUSIP Number 98420X202
ISIN Number US98420X2027
Employer ID 27-3181608
SIC Code 2836

Key Executives

Name Position
Dr. Adam R. Craig M.B.A., M.D., Ph.D. Executive Chair
John P. Volpone M.B.A. President and Chief Operating Officer
David H. Kirske Chief Financial Officer, Treasurer and Corporate Secretary
Dr. Richard Peters M.D., Ph.D. Founder
Dr. Renato T. Skerlj Ph.D. Founder
Dr. Keith T. Flaherty M.D. Founder and Member of Corporate Advisory Board

Latest SEC Filings

Date Type Title
Mar 20, 2026 ARS Filing
Mar 20, 2026 DEFA14A Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Mar 20, 2026 DEF 14A Other definitive proxy statements
Mar 18, 2026 S-8 Securities to be offered to employees in employee benefit plans
Mar 17, 2026 10-K Annual Report
Mar 6, 2026 SCHEDULE 13G/A Filing
Feb 17, 2026 SCHEDULE 13G/A Filing
Feb 17, 2026 SCHEDULE 13G/A Filing
Feb 17, 2026 SCHEDULE 13G/A Filing
Feb 17, 2026 SCHEDULE 13G Filing