X0508 4 2025-08-01-05:00 false 0001921865 ASP Isotopes Inc. ASPI 0002079961 Ainscow Donald George C/O ASP ISOTOPES INC. 601 PENNSYLVANIA AVENUE NW, STE 900 WASHINGTON, DC DC 20004 false true false false EVP, Gen Counsel, Secretary false Common Stock 2025-08-01-05:00 4 A false 400000 A 500000 D This award of common stock was made in connection with the appointment of Mr. Ainscow as Executive Vice President, General Counsel and Secretary effective August 1, 2025, and shall vest (subject to compliance with applicable vesting conditions) in eight equal semi-annual installments over a four-year period beginning on the six-month anniversary of the grant date. /s/ Donald Ainscow 2025-11-28-05:00