KIRSKE DAVID bought XFOR
August 12, 2025 · Form 4 insider transaction
KIRSKE DAVID bought 1,073,249 shares of X4 Pharmaceuticals, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Acquired (buy-side)
Shares
1,073,249
Price
$0.00
Total value
N/A
InsiderKIRSKE DAVID
Role—
SecurityStock Option (right to buy)
Transaction codeA: Grant or award
Transaction dateAugust 12, 2025
Filing dateAugust 14, 2025
Shares owned after1,073,249
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
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.