X0508 4 2025-04-14-05:00 false 0001921865 ASP Isotopes Inc. ASPI 0001744816 Mann Paul Elliot C/O ASP ISOTOPES INC. 601 PENNSYLVANIA AVENUE NW, SUITE 900 WASHINGTON DC 20004 true true true false Chief Executive Officer false Common Stock 2025-04-14-05:00 4 A false 1441361 A 8265454 D This award of common stock was issued to the reporting person pursuant to his Employment Agreement dated October 4, 2021, as amended on December 20, 2022, and shall vest (subject to compliance with applicable vesting conditions) in four equal installments over a one-year period beginning on March 1, 2025. /s/ Donald Ainscow, as attorney-in-fact 2025-04-15-05:00