Disclaimers

Account Disclaimer

Social media communications made by or on behalf of Fortitude Mining Holdings, Inc. and its subsidiaries (collectively, the “Fortitude Group”), including posts, tweets, re-tweets, comments, or any other communications on forums such as X.com or LinkedIn, among others (each a “Social Media Communication”) are for informational and educational purposes only and are expressions of opinion. Opinions expressed within Social Media Communications are current as of the date posted and subject to change.

In the ordinary course of business, the Fortitude Group currently sells or otherwise monetizes all the digital assets that it mines, including ZEC. In addition, the Fortitude Group and its affiliates, including Digital Currency Group, Inc. (“DCG”), from time to time sell, pledge or otherwise monetize their digital asset holdings, including ZEC. The funds received from such sales, pledges, or other monetization activities are used to fund operating expenses and capital investments, as well as for other purposes, including to hedge exposures and realize investment gains.
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The Fortitude Group and its affiliates may have financial interests in the products, assets, technologies, or securities discussed as part of Social Media Communications. However, Social Media Communications do not constitute legal, tax, investment, financial, or other advice, including any recommendation to invest in any particular security, token, strategy, or product. Please do your own research and consult with a qualified financial professional before making any such decisions.
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Further, no Social Media Communication constitutes a solicitation to purchase, or an offer to sell, any assets, securities, or financial instruments by the Fortitude Group. Any such solicitation or offer will be made only in compliance with the laws of the United States or
other applicable jurisdiction, and in accordance with duly authorized agreements. Note: X.com auto-links cashtags (e.g., $TICKER) to third-party pages that the Fortitude Group does not control or endorse. Information on those pages is not provided or verified by the Fortitude Group.
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Transaction Disclaimer

Fortitude Mining Holdings, Inc. (“Fortitude”), a vertically-integrated digital asset mining platform anchored in Zcash, and HeartSciences Inc. (Nasdaq: HSCS)(“HeartSciences”), an AI-powered medical technology company, have entered into a definitive merger agreement to combine in an all-stock transaction (the “Proposed Transaction”). The following is important information that should be read together with communications linking to this page.

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Additional Information About the Proposed Transaction and Where to Find It

Communications related to each of Fortitude and Heartsciences, their respective businesses and the Proposed Transaction may be deemed solicitation material in respect of the Proposed Transaction. In connection with the Proposed Transaction, HeartSciences has filed a preliminary proxy statement on Schedule 14A on July 27, 2026, as amended on October 6, 2026 (the “preliminary proxy statement”), and may file additional relevant materials with the Securities and Exchange Commission (“SEC”). Following the filing of a definitive proxy statement with the SEC, Heartsciences will mail the definitive proxy statement and a proxy card to each shareholder entitled to vote at the special meeting relating to the Proposed Transaction. INVESTORS AND SHAREHOLDERS OF HEARTSCIENCES ARE URGED TO READ THESE MATERIALS (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND ANY OTHER RELEVANT DOCUMENTS IN CONNECTION WITH THE PROPOSED TRANSACTION THAT HEARTSCIENCES HAS FILED OR MAY FILE WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT HEARTSCIENCES AND THE PROPOSED TRANSACTION. COMMUNICATIONS THAT DO NOT CONTAIN ALL THE INFORMATION THAT SHOULD BE CONSIDERED CONCERNING THE PROPOSED TRANSACTION AND RELATED MATTERS ARE NOT INTENDED TO PROVIDE THE BASIS FOR ANY INVESTMENT DECISION OR ANY OTHER DECISION IN RESPECT OF SUCH MATTERS. The preliminary proxy statement, the definitive proxy statement and other relevant materials in connection with the Proposed Transaction (when they become available), and any other documents filed by HeartSciences with the SEC, may be obtained free of charge at the SEC’s website at www.sec.gov. In addition, investors and shareholders may obtain free copies of the documents filed with the SEC or by sending a request to the HeartSciences Investor Relations Department at [email protected].‍

Cautionary Note Regarding Forward-Looking Information

Communications may contain forward-looking statements concerning HeartSciences, Fortitude and the Proposed Transaction and other matters. These forward-looking statements generally can be identified by the use of words such as “aim,” “anticipate,” “expect,” “plan,” “could,” “may,” “will,” “believe,” “estimate,” “forecast,” “goal,” “project,” “potential,” “target,” “objective,” “intend,” and other words of similar meaning, but the absence of these words does not mean that a statement is not forward-looking. All statements HeartSciences and/or Fortitude make in communications that do not relate to matters of historical fact should be considered forward-looking statements.
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These forward-looking statements are based on management’s current expectations and assumptions as of the date of such communication and are subject to a number of known and unknown risks, uncertainties, and other factors that could cause actual results to differ materially from those expressed or implied by such statements, which may include, without limitation, the following: the risk that the Proposed Transaction may not be completed on the anticipated timeline or at all; the failure to satisfy the conditions to the closing of the Proposed Transaction, including obtaining the requisite approval of the HeartSciences’ shareholders; market, macroeconomic, or other conditions that could adversely affect either HeartSciences or Fortitude, or the combined company; risks related to the integration of the two companies and the management of a newly public company; risks relating to Fortitude’s operations and business, including the highly volatile nature of the price of Zcash and other cryptocurrencies; and risks relating to significant legal, commercial, regulatory and technical uncertainty regarding digital assets generally. Additional factors that may cause actual results to differ materially from those expressed or implied by the forward-looking statements in such communications are discussed in HeartSciences’ filings with the SEC, including HeartSciences’ 2026 Annual Report on Form 10-K, filed with the SEC on July 23, 2026, HeartSciences’ Quarterly Report on Form 10-Q for the fiscal quarter ended July 31, 2026, filed with the SEC on September 14, 2026, the preliminary proxy statement, and other HeartSciences’ reports filed with the SEC from time to time. Readers are cautioned not to place undue reliance on these forward-looking statements. Each of HeartSciences and Fortitude expressly disclaims any obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by applicable law. Any forward-looking statements made in such communications are made as of the date of the communication.‍

Participants in the Solicitation

HeartSciences and Fortitude, their respective directors and executive officers, and certain executive officers of DCG may be deemed to be participants in the solicitation of proxies from HeartSciences’ shareholders with respect to the Proposed Transaction. Information regarding the identity of the potential participants, and their direct or indirect interests in the Proposed Transaction, by security holdings or otherwise, is set forth in the preliminary proxy statement and other materials to be filed with the SEC in connection with the Proposed Transaction.
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No Offer or Solicitation

Any communication linking to this page and the information contained therein is not intended to and does not constitute, or form part of, an offer, invitation or the solicitation of an offer or invitation to purchase, otherwise acquire, subscribe for, sell or otherwise
dispose of any securities, or the solicitation of any vote or approval in any jurisdiction, pursuant to the Proposed Transaction or otherwise, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in contravention of applicable law.

The Proposed Transaction will be implemented solely pursuant to the terms and conditions of the merger agreement, which contain the full terms and conditions of the Proposed Transaction.