Hyperscale Data, Inc.

ITEM 1.01 ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT. As previously reported, on June 18, 2026, Hyperscale Data, Inc. (the “Company”) entered into an At-the-Market Issuance Sales Agreement (the “Sales Agreement”) with Spartan Capital Securities, LLC, as sales agent (the “Agent”) to sell shares of its Class A common stock, par value $0.001 (the “Common Stock”), from time to time, through an “at the market offering” (the “ATM Offering”) as defined in Rule 415 under the Securities Act of 1933, as amended (the “Securities Act”). The Company filed with the SEC, in accordance with the provisions of the Securities Act, and the rules and regulations thereunder, a registration statement (the “Registration Statement”) on Form S-3 (File No. 333-291595), including a base prospectus, relating to certain securities, including the Placement Shares, to be issued from time to time by the Company, and which incorporates by reference documents that the Company has filed or will file in accordance with the provisions of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules and regulations thereunder. The Registration Statement was filed on November 17, 2025 and was declared effective by the SEC on December 11, 2025. On June 18, 2026, the Company filed a prospectus supplement with the Securities and Exchange Commission (“SEC”) relating to the offer and sale of up to $300,000,000 of common stock in the ATM Offering (collectively, the “Prospectus Supplement”). The Company will file a supplement to the Prospectus Supplement (the “Supplement”) with the SEC to decrease the amount of Common Stock that may be offered and sold in the ATM Offering under the Sales Agreement to $100,000,000 in the aggregate. As of the date of this Current Report on Form 8-K, the Company has sold an aggregate of 121,827,841 Placement Shares for aggregate gross proceeds (prior to paying expenses associated with the Agreement and commissions to the Agent) of Forty-Nine Million Seven Hundred Eighty-One Thousand Eight Hundred Eighty-Five Dollars ($49,781,885). This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of any offer to buy any shares under the Sales Agreement, nor shall there be any offer, solicitation or sale of such shares in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state. The foregoing description of the terms of the Sales Agreement, as amended by the Amendment to the At-The-Market Issuance Sales Agreement, dated October 9, 2026 (the “Amendment”), does not purport to be complete and is subject to, and qualified in its entirety by reference to, the Amendment, which is filed herewith as

ITEM 7.01 REGULATION FD DISCLOSURE. On October 12, 2026, Hyperscale Data, Inc. (the “Company”) issued a press release announcing the entry into the Amendment (the “Press Release”). A copy of the Press Release is furnished herewith as