KIRSKE DAVID bought XFOR
October 29, 2025 · Form 4 insider transaction
KIRSKE DAVID bought 1,552,769 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
1,552,769
Price
$0.00
Total value
N/A
InsiderKIRSKE DAVID
Role—
SecurityStock Option (right to buy)
Transaction codeA: Grant or award
Transaction dateOctober 29, 2025
Filing dateOctober 31, 2025
Shares owned after1,552,769
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
Represents stock options granted to the Reporting Person on August 12, 2025, which were subject to a performance-based vesting condition that was satisfied on October 29, 2025. One third of the shares subject to the option shall vest on August 12, 2026, with the remainder vesting in equal installments each successive month thereafter for a period of 24 months, subject to the Reporting Person continuing to provide services through each such date.