Regulation FD Disclosure (Form 8-K)

Item 7.01 Regulation FD Disclosure.

On May 20, 2026, ASP Isotopes Inc. (the "Company") released its latest investor presentation (the "Presentation"). The Presentation is available on the Company's website, www.aspisotopes.com, on the Home page. All of the information in the Presentation is presented as of the date hereof, and the Company does not assume any obligation to update such information in the future.

The information in the Presentation shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended (the "Securities Act"), and shall not be incorporated by reference into any filing with the U.S. Securities and Exchange Commission (including under the Exchange Act or the Securities Act), whether made by the Company before or after the date hereof, regardless of any general incorporation language in such filing.

The Presentation includes "safe harbor" language pursuant to the Private Securities Litigation Reform Act of 1995, as amended, indicating that certain statements contained therein may be "forward-looking statements" rather than historical. Such forward-looking statements are based on management's current beliefs and are subject to a a variety of known and unknown risks, uncertainties, and other factors that are difficult to predict and many of which are beyond management's control. An extensive list of factors that can affect future results are discussed in the Company's most recent Annual Report on Form 10-K, as amended, and other documents filed by the Company from time to time with the U.S. Securities and Exchange Commission. The Company does not assume any obligation to update or revise any such forward-looking statement to reflect new information or events.

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