The business address for the Reporting Person is: 3600 Green Court, Suite 350, Ann Arbor, Michigan 48105.

The Reporting Person joined the Issuer's Board of Directors in 2013. He is the co-founder of MDB Capital Group LLC, where he focuses on corporate finance and capital formation for growth-oriented companies. He also serves on the board of directors of ClearSign Technologies Corporation (Nasdaq: CLIR) and Illumination Acquisition Corp. I (Nasdaq: ILLU).

During the last five years, the Reporting Person has not been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors).

During the last five years, the Reporting Person was not a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

United States

The Reporting Person purchased an aggregate of 70,824 shares of Common Stock from the market or in public or private offerings from 2020 to October 2025 using his personal funds. All other shares of Common Stock and derivative securities described in Item 5 below have been issued to the Reporting Person in connection with his services to the Issuer as a director.

On June 25, 2026, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement"), by and among ASP Isotopes Inc., a Delaware corporation, Noble Africa LLC, a Delaware limited liability company and a direct, wholly-owned subsidiary of ASP ("Noble"), Renergen Limited, a company incorporated under the laws of the Republic of South Africa and a direct, wholly-owned subsidiary of ASP , the Issuer, and Kruger Merger Sub LLC, a Delaware limited liability company and a direct, wholly-owned subsidiary of the Issuer ("Merger Sub"), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Noble (the "Merger"), with Noble surviving the Merger as a direct wholly-owned subsidiary of the Issuer. Also on June 25, 2026, in connection with the Merger Agreement, the Issuer, Noble and the Reporting Person entered into a voting agreement (the "Voting Agreement"). Pursuant to the Voting Agreement, the Reporting Person has agreed, among other things, subject to the terms and conditions thereof, to: (i) vote their beneficially owned securities of the Issuer in favor of the approval of (A) the issuance of the shares of Class A Common Stock (as defined below) and Class B Common Stock (as defined below) of the Issuer as consideration in the Merger, (B) the implementation of a reverse stock split for the purpose of maintaining compliance with Nasdaq listing standards, if necessary, (C) the adoption of a new equity incentive plan, and (D) an amended and restated certificate of incorporation (the "A&R Certificate of Incorporation"), which will provide for, among other things, the Issuer being renamed "Noble Africa Inc." and the establishment of two classes of common stock, consisting of Class A common stock, par value $0.0001 per share ("Class A Common Stock"), and Class B common stock, par value $0.0001 per share ("Class B Common Stock") (collectively, the "Stockholder Matters"), at a special meeting called for the purpose of approving the Stockholder Matters (the "Special Meeting"); (ii) vote against any agreement, transaction or other matter that is intended to, or would reasonably be expected to impede, interfere with, delay, postpone or materially and adversely affect the Stockholder Matters; (iii) appear in person or by proxy at the Special Meeting for quorum purposes; and (iv) grant the Issuer an irrevocable proxy to vote the Reporting Person's shares of Common Stock covered by the Voting Agreement at the Special Meeting as required, if the Reporting Person fails to do so. The foregoing description of the Voting Agreement does not purport to be complete and is qualified in its entirety by reference to the form of the Voting Agreement, which is filed as an exhibit to this Amendment No. 1, and is incorporated by reference herein. This Amendment No. 1 amends the Schedule 13D to report the Reporting Person's beneficial ownership of the shares of Common Stock as of the date hereof. The Reporting Person is filing this Amendment No. 1, pursuant to Rule 13d-1(e) under the Act, solely as a result of the entry into the Voting Agreement. As such, the Reporting Person currently is subject to a "cooling-off" period pursuant to Rule 13d-1(e)(2) under the Act, which ends at the expiration of the tenth day from the date of the filing of this Schedule 13D.

The Reporting Person beneficially owns an aggregate of 196,692 shares of the Issuer's Common Stock. Such amount represents 9.99% of the outstanding shares of Common Stock based on the 1,848,473 shares of Common Stock outstanding as of May 28, 2026 (according to the SEC Reports). The number of shares deemed outstanding in accordance with Rule 13d-3(d)(i) under the Exchange Act (taking into account the Option Shares and the Warrant Shares that are reported herein, as required by that Rule) is 1,968,891.

196,692

On June 11, 2026, 5,384 shares of common stock underlying restricted stock units ("RSUs") granted to the Reporting Person vested in full.

N/A

N/A

The response to Item 4 of this Amendment No. 1 is incorporated herein by reference. On January 21, 2026, the Issuer granted 60,324 RSUs, which convert to shares of Common Stock on a one-for-one basis, to the Reporting Person, which vest in full on January 21, 2027, subject to the Reporting Person's continued service through that date, or earlier upon a Change of Control of the Issuer (as defined in the RSU award agreement).

Exhibit 1 Form of Voting Agreement