KIESSLING HEATHER

PrivateCIK: 2026548
Location

WASHINGTON, DC, DC

KIESSLING HEATHER (Chief Financial Officer) sold 3.2% of their position (23.12K shares) of ASP ISOTOPES INC. on the open market

Open‑market sale worth $126.7K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderKIESSLING HEATHERCIK 2026548
IssuerASP ISOTOPES INC.CIK 1921865
Officer· Chief Financial Officer
-23.12K
Net shares
Net seller
$126.7K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
23.12K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

23.12K

Price / share

$5.48

Trade value

$126.67K

% of position

3.2%
732.50K709.38K
Total

Net shares

23.12K

Net value

-$126.67K

Derivative Transactions0
No derivative transactions reported
KIESSLING HEATHER — Insider Transaction (Form 4) Filed Apr 18, 2026 | Finecho