144 0002012446 XXXXXXXX LIVE 0001921865 ASP Isotopes Inc. 001-41555 2200 ROSS AVENUE, SUITE 4575E DALLAS TX 75201 2144328219 Gorley Michael DIRECTOR Common Stock Independent Trading Group (ITG) Inc.

33 Yonge Street Suite 420 Toronto A6 M5E 1G4

30000 186600 125903447 06/29/2026 NASDAQ Common Stock 08/13/2024 Acquired as compensation -- Restricted Stock Award Issuer N 8380 08/13/2024 NA Common Stock 11/20/2024 Acquired as compensation -- Restricted Stock Award Issuer N 42522 11/20/2024 NA Y The Aggregate Market Value of the shares to be sold is based on the closing market price of $6.22 on June 29, 2026. 06/29/2026 /s/ Donald Ainscow, as attorney-in-fact for Michael Gorley