HeartSciences Inc. filed Definitive Additional Materials (DEFA14A) on October 29, 2026, transmitting a press release from merger partner Fortitude Mining Holdings, Inc. announcing that Fortitude's 15-megawatt Aurora, Nebraska facility is now participating in Southwest Power Pool wholesale electricity markets through Dispatchable Demand Response.

Key Highlights

  • Merger context: HeartSciences (NASDAQ:HSCS), described in the filing as "an AI-powered medical technology company," and Fortitude Mining Holdings, Inc., described as "a vertically-integrated digital asset mining platform anchored in Zcash," have entered into a definitive all-stock merger agreement.
  • Aurora facility capacity: Fortitude's Aurora, Nebraska facility operates at 15 megawatts (MW) and is now participating in Southwest Power Pool (SPP) wholesale electricity markets via Dispatchable Demand Response (DDR).
  • Power supply structure: The Aurora Facility is served by Southern Public Power District (SPPD) through a wholesale supply agreement with Nebraska Public Power District (NPPD).
  • Definitive proxy date: HeartSciences filed its definitive proxy statement on Schedule 14A with the SEC on October 19, 2026, in connection with the proposed transaction.
  • Digital asset monetization: According to the filing, Fortitude "currently sells or otherwise monetizes all the digital assets that it mines, including ZEC" in the ordinary course of business.
  • DCG involvement: Digital Currency Group, Inc. (DCG) and certain of its executive officers are identified in the filing as potential participants in the proxy solicitation related to the proposed transaction.

HeartSciences and Fortitude: Merger Background and Aurora Facility Details

According to the filing, HeartSciences Inc. and Fortitude Mining Holdings, Inc. have executed a definitive merger agreement to combine in an all-stock transaction. HeartSciences is described as an AI-powered medical technology company, while Fortitude is characterized as a vertically integrated digital asset mining platform anchored in Zcash. The filing notes that the special meeting of HeartSciences shareholders will require "the requisite approval of the HeartSciences shareholders" as a condition to closing the proposed transaction.

The DEFA14A also transmits a press release from Fortitude announcing a specific operational development at its Aurora, Nebraska facility. The 15 MW facility is now participating in SPP wholesale electricity markets through Dispatchable Demand Response, which the filing describes as allowing the facility "to adjust its electricity usage in response to grid conditions and market signals." Jaime Leverton, CEO of Fortitude, is quoted in the filing stating that "a flexible power portfolio is central to our strategy for building and operating scalable, vertically integrated digital asset mining infrastructure."

Thomas Kent, CEO of Nebraska Public Power District, is also quoted in the filing, noting that the Aurora Facility's "ability to operate at a consistent load while rapidly reducing consumption when grid conditions require it provides valuable flexibility without placing the same demands on the system as traditional, non-interruptible industrial loads." The filing identifies risks associated with the proposed transaction, including "the highly volatile nature of the price of Zcash and other cryptocurrencies" and "significant legal, commercial, regulatory and technical uncertainty regarding digital assets generally." These characterizations are the company's own and are subject to its cautionary language regarding forward-looking statements.

What Was Disclosed

HeartSciences filed Definitive Additional Materials on October 29, 2026, transmitting a Fortitude press release on the Aurora facility's entry into SPP electricity markets and a social media post from a DCG executive officer, both in connection with the pending all-stock merger between the two companies.