Form 4 – statement of changes in beneficial ownership

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 4 – STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP


ASPI stockholders are advised that on 3 December 2025, a Form 4 has been filed with the U.S. Securities
and Exchange Commission by a director and officer of the Company pursuant to Section 16(a) of the
Securities Exchange Act of 1934.

A copy of the Form 4 can be found at SEC FORM 4.

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


4 December 2025

Sponsor
Valeo Capital Proprietary Limited

Date: 04-12-2025 11:23:00
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