KIRSKE DAVID

PrivateCIK: 1276750
Location

BOSTON, MA

KIRSKE DAVID (Chief Financial Officer) sold 4.8% of their position (8.54K shares) of X4 PHARMACEUTICALS, INC on the open market

Open‑market sale worth $36.4K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderKIRSKE DAVIDCIK 1276750
IssuerX4 PHARMACEUTICALS, INCCIK 1501697
Officer· Chief Financial Officer
Since Aug 2025
-8.54K
Net shares
Net seller
$36.4K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
8.54K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

8.54K

Price / share

$4.26

Trade value

$36.43K

% of position

4.8%
6/30/2026
176.29K167.75K
Total

Net shares

8.54K

Net value

-$36.43K

Derivative Transactions0
No derivative transactions reported