KIRSKE DAVID

PrivateCIK: 1276750
Location

BOSTON, MA

KIRSKE DAVID (Chief Financial Officer) sold 8.8% of their position (16.96K shares) of X4 PHARMACEUTICALS, INC on the open market

Open‑market sale worth $72.8K — 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
-16.96K
Net shares
Net seller
$72.8K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
16.96K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

16.96K

Price / share

$4.29

Trade value

$72.82K

% of position

8.8%
5/12/2026
193.25K176.29K
Total

Net shares

16.96K

Net value

-$72.82K

Derivative Transactions0
No derivative transactions reported
KIRSKE DAVID — Insider Transaction (Form 4) Filed May 13, 2026 | Finecho