Attached files

file filename
EX-10.32 - EX-10.32 - X4 Pharmaceuticals, Incex1032leasedatedasofno.htm
10-K - 10-K - X4 Pharmaceuticals, Incxfor-20191231.htm
EX-32.1 - EX-32.1 - X4 Pharmaceuticals, Incex-321.htm
EX-31.2 - EX-31.2 - X4 Pharmaceuticals, Incex-312.htm
EX-31.1 - EX-31.1 - X4 Pharmaceuticals, Incex-311.htm
EX-23.1 - EX-23.1 - X4 Pharmaceuticals, Incex231consentofindepend.htm
EX-21.1 - EX-21.1 - X4 Pharmaceuticals, Incex211listofsubsidiaries.htm
EX-10.39 - EX-10.39 - X4 Pharmaceuticals, Incex1039amendment1tomast.htm
EX-10.38 - EX-10.38 - X4 Pharmaceuticals, Incex1038masterservicesag.htm
EX-10.37 - EX-10.37 - X4 Pharmaceuticals, Incex1037amendment2tomast.htm
EX-10.36 - EX-10.36 - X4 Pharmaceuticals, Incex1036amendment1tomast.htm
EX-10.35 - EX-10.35 - X4 Pharmaceuticals, Incex35masterservicesagre.htm
EX-10.23 - EX-10.23 - X4 Pharmaceuticals, Incex1023meisneramendedag.htm
EX-10.22 - EX-10.22 - X4 Pharmaceuticals, Incex1022meisnerexecutive.htm
EX-10.21 - EX-10.21 - X4 Pharmaceuticals, Incex1021amendedtoexecuti.htm
EX-10.19 - EX-10.19 - X4 Pharmaceuticals, Incex1019.htm
EX-10.17 - EX-10.17 - X4 Pharmaceuticals, Incex1017amendmenttoamend.htm
EX-10.2 - EX-10.2 - X4 Pharmaceuticals, Incex1020.htm
EX-4.12 - EX-4.12 - X4 Pharmaceuticals, Incex4-12descriptionofreg.htm

Exhibit 32.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Adam S. Mostafa, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge, the Annual Report on Form 10-K of X4 Pharmaceuticals, Inc. for the fiscal year ended December 31, 2019 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in such Form 10-K fairly presents, in all material respects, the financial condition and results of operations of X4 Pharmaceuticals, Inc.

/s/ Adam S. Mostafa
Name: Adam S. Mostafa.
Title: Chief Financial Officer and Treasurer
(Principal Financial Officer)

March 12, 2020