SUPPLEMENT TO PROXY STATEMENT
FOR THE ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON JUNE 13, 2023
This Supplement provides updated information with respect to the 2023 Annual Meeting of Stockholders (the “Annual Meeting”) of X4 Pharmaceuticals, Inc. (the “Company”) to be held on June 13, 2023.
The Company filed its Definitive Proxy Statement on Schedule 14A relating to the Annual Meeting (the “Proxy Statement”) with the Securities and Exchange Commission on April 25, 2023. On pages 1 and 6 of the Proxy Statement, the number of shares outstanding and entitled to vote as of the record date, April 18, 2023, is corrected from 121,207,488 to 122,207,488. In addition, on page 6 of the Proxy Statement, the number of shares that must be present in person or represented by proxy at the Annual Meeting in order to have a quorum is corrected from 60,603,745 to 61,103,745.
We are filing these additional materials (the “Additional Materials”) to correct these errors. The Additional Materials should be read together with the Proxy Statement. Except as described herein, the Additional Materials do not amend, replace, supplement or otherwise affect the Proxy Statement or the information contained therein.
Information on how to vote your shares, or change or revoke your prior vote or voting instruction, is available in the Proxy Statement.