KIRSKE DAVID

PrivateCIK: 1276750
Location

BOSTON, MA

KIRSKE DAVID (Chief Financial Officer) sold 7.0% of their position (11.77K shares) of X4 PHARMACEUTICALS, INC on the open market

Open‑market sale worth $33.7K — a moderate reduction. 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
-11.77K
Net shares
Net seller
$33.7K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
11.77K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

−11.77K

Price / share

$2.86

Trade value

$33.66K

% of position

7.0%
10/1/2026
167.75K→155.98K
Total

Net shares

−11.77K

Net value

-$33.66K

Derivative Transactions0
No derivative transactions reported
KIRSKE DAVID — Insider Transaction (Form 4) Filed Oct 5, 2026 | Finecho