Filed by ASP Isotopes Inc.

Pursuant to Rule 425 under the Securities Act of 1933, as amended

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934, as amended

Subject Company: ENDRA Life Sciences Inc.

(Commission File No. 001-37969)

The following is a transcript from a presentation at ASP Isotopes Inc.’s (the “Company”) inaugural Capital Markets Day in London on September 8, 2026, which relates to the proposed merger and related transactions (the “Proposed Transactions”) involving Renergen Limited, a wholly owned subsidiary of the Company (“Renergen”), Noble Africa LLC, a wholly owned subsidiary of the Company and holding company for Renergen (“Noble Africa”), and ENDRA Life Sciences Inc. (“ENDRA”)

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Paul Mann:

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And then finally, Renergen and Noble Africa, we acquired that asset in January of this year. We’ve added a lot of headcount to that business, we’ve invested in it, we’ve made some management changes, we’ve brought in a lot of engineers and a lot of drillers, and that plant started production during, started cooling down and commissioning during August. We just actually hit the target temperature of four Kelvin, and now we will start producing, we should start producing commercial product by the end of September.

[…]

So you’ll see on the left here, you’ll see Noble Africa, our Renergen site in South Africa, in Velcom, South Africa. This is one of the most unique assets in the world, and we’ll talk about it more later on today. But there really aren’t many, no gas fields we’ve seen like this in the world. It’s an incredible location, incredible product that comes out of it. And I say, the world is desperate for a new supplier of helium.

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And then in terms of corporate transactions, we said we’re going to list Noble Africa listing via reverse merger with Endra, ticker code NDRA.

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Q&A Participant:

Question: Maybe to start first with the guidance for, I think, 2031 of $300 million, $30 million to $700 million. What’s your margin assumption there in terms of just how to picture the revenue base being, what sort of EBITDA margin does that get you to?

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Paul Mann:

Yes, so just to repeat the question, so the question is about what’s the margin assumptions in our 2031 target? So, it varies by business. So, for example, at that kind of scale, Renergen should be kind of an 80% plus gross margin business. We really have a lot of operational scale there. There aren’t actually many input costs because the main input cost is energy and we’re sitting on an energy field. So that’s kind of Noble Africa or Renergen.

[…]

Q&A Participant:

So Paul, if you think about the evolution of ASPI from sort of acquisition of Hendrik’s technology to where you are now, spinning off QLE, spinning off Noble, and we hear today Natalie talk and Martin talk about Pet Labs. How do you see the evolution of ASPI in the next four to five years? Do you see yourself as a top coast spinning off lots of assets or do you see more sort of acquisitions yourself or steady as she goes? What do you see the evolution of ASPI?

Paul Mann:

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I think by listing Renergen as Noble Africa via reverse merger, we're going to own 89% of that and there'll be 10% to 11% free float and whether we raise any additional capital to increase the free float or not, we’ll have to wait and see. We’ve got a lot of customers wanting to have ownership stakes in that business as well, or to put some prepayments in to help fund, accelerate certain projects. But having a listed helium business is, I think, really unique. I spent the last 20 years looking for a listed helium business that is revenue generating and commercially viable, just because I’ve always found helium as the most interesting commodity chemical on planet Earth and by creating that, we’re giving investors the opportunity to invest in a pure play helium business, which I think is really unique.

[…]

The portions of the presentation below were used by the Company in connection with the Capital Markets Day presentation, which relate to the Proposed Transactions.

Cautionary Statement Regarding Forward-Looking Statements

This communication contains “forward-looking statements” within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on the current beliefs, expectations, and assumptions of the parties regarding the future of the parties’ businesses, future plans and strategies, projections, anticipated events and trends, the economy, and other future conditions. Forward-looking statements can be identified by words such as “anticipates,” “believes,” “could,” “estimates,” “expects,” “intends,” “may,” “might,” “plans,” “projects,” “will,” and words of a similar nature. Examples of forward-looking statements include, but are not limited to, statements relating to the Proposed Transactions; the expected structure, timing and the completion of the Proposed Transactions and the expected effects, perceived benefits or opportunities of the Proposed Transactions; the combined company’s listing on Nasdaq after the closing of the Proposed Transactions; the expected executive officers and directors of the combined company; each company’s and the combined company’s expected cash position at the closing of the Proposed Transactions and cash runway of the combined company following the Proposed Transactions; the future operations and pipeline, estimates of financial position, competitive landscape, addressable market and strategic and financial initiatives of the combined company; the nature, strategy and focus of the combined company; statements regarding the continuation of Renergen’s Virginia Gas Project and its funding timeline and other statements that are not historical fact. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks, and changes in circumstances that are difficult to predict, many of which are outside our control. Actual results, financial condition, and events may differ materially from those indicated in the forward-looking statements based upon a number of factors. Forward-looking statements are not a guarantee of future performance or developments. You are strongly cautioned that reliance on any forward-looking statements involves known and unknown risks and uncertainties. Therefore, you should not rely on any of these forward-looking statements.

There are many important factors that could cause actual results and financial condition to differ materially from those indicated in the forward-looking statements, including, but not limited to: the outcomes of various strategies and projects undertaken by Renergen; the potential impact of laws or government regulations or policies in South Africa or elsewhere; Renergen’s future capital requirements and sources and uses of cash; Renergen’s ability to obtain funding for its operations and future growth, including debt funding for Phase 2 of the Virginia Gas Project; Renergen’s reliance on the efforts of third parties; Renergen’s ability to complete Phase 1 and 2 of the Virginia Gas Project; the financial terms of any current and future commercial arrangements; Renergen’s ability to complete certain transactions and realize anticipated benefits from acquisitions and contracts; Renergen’s ability to comply with the terms of the loan and credit facilities of Renergen’s subsidiary Tetra4; the ability of Renergen and its subsidiaries to retain and hire key personnel; the volatility of LNG and liquid helium prices; Renergen’s success in discovering, estimating and developing natural gas and helium reserves; actions of competitors or regulators; limitations in the availability of, and costs of, supplies, materials, contractors and services that may delay the drilling or completion of wells or make such wells more expensive; the amount and timing of future development costs; uncertainties inherent in estimating quantities of natural gas and helium reserves and projecting future rates of production and timing of development activities; risks relating to the lack of capital available on acceptable terms to finance the Renergen’s continued growth; the competitive nature of Renergen’s industry; the risk that the conditions to the closing or consummation of the Proposed Transactions are not satisfied, including the failure to timely obtain approval of the Proposed Transactions from ENDRA stockholders, if at all; the risk that the proposed financings are not completed in a timely manner, if at all; uncertainties as to the timing of the consummation of the Proposed Transactions and the ability of each of ENDRA and Noble Africa to consummate the Proposed Transactions; risks related to ENDRA’s continued listing on Nasdaq until closing of the Proposed Transactions and the combined company’s ability to remain listed following the closing of the Proposed Transactions; the ability to obtain debt financing on terms that are favorable, or at all; the risk that Renergen does not receive funding from the U.S. DFC or Standard Bank SA or that such funding is delayed; risks related to ENDRA’s ability to correctly estimate its respective operating expenses and its respective expenses associated with the Proposed Transactions, as applicable, pending the closing of the Proposed Transactions, as well as uncertainties regarding the impact any delay in the closing would have on the anticipated cash resources of ENDRA, and other events and unanticipated spending and costs that could reduce ENDRA’s cash resources; risks related to the failure or delay in obtaining required approvals from any governmental or quasi-governmental entity necessary to consummate the Proposed Transactions; the occurrence of any event, change or other circumstance or condition that could give rise to the termination of the merger agreement; the effect of the announcement or pendency of the Proposed Transactions on ENDRA’s or Renergen’s business relationships, operating results and business generally; costs related to the Proposed Transactions; risks related to the market price of ENDRA’s common stock relative to the value suggested by the Proposed Transactions; the outcome of any legal proceedings that may be instituted against ENDRA, Noble Africa or any of their respective directors, managers, or officers related to the Proposed Transactions; costs of the Proposed Transactions and unexpected costs, charges or expenses resulting from the Proposed Transactions; changes in regulatory requirements and government incentives; risks associated with the possible failure to realize, or that it may take longer to realize than expected, certain anticipated benefits of the Proposed Transactions, including with respect to future financial and operating results, legislative, regulatory, political and economic developments, and those uncertainties and factors; and the risk of involvement in litigation, including securities class action litigation, that could divert the attention of the management of ENDRA or the combined company, harm the combined company’s business and may not be sufficient for insurance coverage to cover all costs and damages, and the other risks and uncertainties described in ENDRA’s filings with the U.S. Securities and Exchange Commission (the “SEC”), and under the heading “Risk Factors” in its most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q, the factors disclosed in Part I, Item 1A. “Risk Factors” of ASP Isotopes’ Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (as amended) and in ASP Isotopes’ subsequent reports filed with the SEC, each of which are available at www.sec.gov, and in other filings that ENDRA and ASP Isotopes have made and will make with the SEC in connection with the Proposed Transactions, including the Form S-4 and Proxy Statement described below under “Additional Information and Where to Find It”.

Any forward-looking statement made by the parties in this communication is based only on information currently available to the parties and speaks only as of the date on which it is made. The parties undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise. No information in this communication should be interpreted as an indication of future success, revenues, results of operations, or stock price. All forward-looking statements herein are qualified by reference to the cautionary statements set forth herein and should not be relied upon.

Important Additional Information and Where to Find It

This communication relates to the Proposed Transactions involving ENDRA, ASP Isotopes, Renergen and Noble Africa and may be deemed to be solicitation material in respect of the Proposed Transactions. In connection with the Proposed Transactions, ENDRA intends to file relevant materials with the SEC, including a registration statement on Form S-4 (the “Form S-4”) that will contain a proxy statement (the “Proxy Statement”) and prospectus. This communication is not a substitute for the Form S-4, the Proxy Statement or for any other document that ENDRA may file with the SEC and/or send to its stockholders in connection with the Proposed Transactions.

INVESTORS AND STOCKHOLDERS OF ENDRA ARE URGED TO READ THE FORM S-4, THE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS THAT MAY BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ENDRA, ASP ISOTOPES, RENERGEN, NOBLE AFRICA, THE PROPOSED TRANSACTIONS AND RELATED MATTERS.

Investors and stockholders will be able to obtain free copies of the Form S-4, the Proxy Statement and other documents filed by ENDRA and ASP Isotopes with the SEC (when they become available) through the website maintained by the SEC at www.sec.gov. ENDRA’s Internet website address is www.endrainc.com.

ENDRA’s Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, including exhibits, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act are available free of charge through the investor relations page of its Internet website as soon as reasonably practicable after it electronically files such material with, or furnishes such material to, the SEC.

Participants in the Solicitation

ENDRA, ASP Isotopes, Renergen, Noble Africa, and their respective directors and managers and certain of their executive officers and other members of management may be deemed to be participants in the solicitation of proxies from ENDRA’s stockholders in connection with the Proposed Transactions under the rules of the SEC.

Information about ENDRA’s directors and executive officers, including a description of their interests in ENDRA, is included in ENDRA’s most recent Annual Report on Form 10-K for the year ended December 31, 2025. Information about ASP Isotopes’ directors and executive officers, including a description of their interests in ASP Isotopes, is included in ASP Isotopes’ most recent Annual Report on Form 10-K for the year ended December 31, 2025. Additional information regarding the persons who may be deemed participants in the proxy solicitations, including the directors and executive officers of Renergen, and a description of their direct and indirect interests, by security holdings or otherwise, will also be included in the Form S-4, the Proxy Statement and other relevant materials to be filed with the SEC when they become available. These documents can be obtained free of charge from the sources indicated above.

No Offer or Solicitation

This communication is not intended to and does not constitute a solicitation of a proxy, consent or approval with respect to any securities or in respect of the Proposed Transactions or an offer to sell or the solicitation of an offer to subscribe for or buy or an invitation to purchase or subscribe for any securities pursuant to the Proposed Transactions or otherwise, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in contravention of applicable law.

No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law, or an exemption therefrom. Subject to certain exceptions to be approved by the relevant regulators or certain facts to be ascertained, the public offer will not be made directly or indirectly, in or into any jurisdiction where to do so would constitute a violation of the laws of such jurisdiction, or by use of the mails or by any means or instrumentality (including without limitation, facsimile transmission, telephone and the internet) of interstate or foreign commerce, or any facility of a national securities exchange, of any such jurisdiction.