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$XFOR All transactions

X4 Pharmaceuticals, Inc

A

$ Value

$0

Shares

193,254

Price

$0

Filed

Aug 14

Insider

Name

KIRSKE DAVID

Title

Chief Financial Officer

CIK

0001276750

Roles

Officer

Transaction Details

Transaction Date

2025-08-14

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

193,254

Footnotes

Represents restricted stock units (RSUs) granted to the Reporting Person. One third of the RSUs shall vest on February 12, 2026, with the remainder vesting in equal installments in each successive quarter thereafter for a period of 12 months, subject to the Reporting Person continuing to provide services through each such date and contingent upon approval of the grant at the Issuer's 2026 Annual Meeting of Stockholders. | One half of the shares subject to the option shall vest on February 12, 2026, with the remainder vesting in equal installments in each successive month thereafter for a period of 12 months, subject to the Reporting Person continuing to provide services through each such date; provided that one half of the shares subject to the option shall vest immediately upon achievement of certain performance-based milestones prior to February 12, 2026.

Filing Info

Accession No.

0001628280-25-040440

Form Type

4

Issuer CIK

0001501697

KIRSKE DAVID's History

Date Ticker Type Value
2025-10-29 XFOR A $0
2025-08-14 XFOR A $0
2025-08-14 XFOR A $0
2025-08-12 XFOR A $0

Other Insiders at XFOR (90d)

No other insider activity at this issuer in the last 90 days.