ASP ISOTOPES INC - Form 12b-25 Notification of late filing

Form 12b-25 – Notification of late filing

ASP ISOTOPES INC.
(Incorporated in the State of Delaware,
United States of America)
(Delaware file number 6228898)
Ticker Symbol: NASDAQ: ASPI
ISIN: US00218A1051
LEI: 6488WHV94BZ496OZ3219
JSE Share Code: ISO
("ASPI" or "the Company")


FORM 12B-25 – NOTIFICATION OF LATE FILING


ASPI stockholders are advised that on 31 March 2026, a Form 12b-25 (Notification of Late Filing) with
respect to the filing of the Company's Annual Report on Form 10-K for the year ended December 31, 2025
has been filed with the U.S. Securities and Exchange Commission.

A copy of the Form 12b-25 can be found at: aspi_nt10k.htm

The Company has a primary listing on the Nasdaq and a secondary listing on the Main Board of the JSE.


1 April 2026

Sponsor
Valeo Capital Proprietary Limited

Date: 01-04-2026 08:00:00
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