| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Craig Adam R | Executive Chairman, Director | C/O X4 PHARMACEUTICALS INC., 61 NORTH BEACON STREET, 4TH FLOOR, BOSTON | /s/ David Kirske, Attorney-In-Fact | 27 Oct 2025 | 0001339498 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | XFOR | Common Stock | Purchase | $249,997 | +86,206 | +30% | $2.90 | 376,087 | 23 Oct 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Consists of shares of the Issuer's common stock purchased in connection with the Issuer's public offering. |