May 8, 2026

GigCapital7 Corp. Announces Domestication in Furtherance of Business Combination with Hadron Energy

GigCapital7 Corp. (NASDAQ: GIG) (“GigCapital7”) today announced that following the shareholder approval of the domestication from the Cayman Islands to Delaware at its Extraordinary General Meeting of Shareholders (the “Extraordinary Meeting”) held on May 7, 2026, as provided for in the business combination agreement between GigCapital7, Hadron Energy, Inc. (“Hadron”) and MMR Merger Sub, Inc. (“Merger Sub”), GigCapital7 intends to file the certificate of corporate domestication and the interim certificate of incorporation today with the Secretary of State of the State of Delaware. As a result, GigCapital7’s securities will commence trading as shares of common stock under the ticker symbol “GIG”, warrants under the ticker symbol “GIGGW”, and units under the ticker symbol “GIGGU” in domesticated GigCapital7 under the CUSIP numbers 37518P101, 37518P119, and 37518P200, respectively, with market effectiveness on Monday, May 10, 2026, and with no changes to the number of outstanding securities. The business combination closing will follow subsequent to the domestication and immediately upon receipt of Nasdaq regulatory clearance, and GigCapital7 at that time will provide a further announcement when the shares will commence trading under the “HDRN” ticker symbol.

About Hadron Energy, Inc.

Hadron is a pioneer in MMR technology. Designed to deliver 10 MWe of continuous power, the Halo MMR is smaller, more cost-effective, and faster to deploy than other proposed nuclear power solutions. The reactor’s vessel, core, and containment shell are fully truck-transportable, enabling deployment across AI data centers, industrial hubs, remote communities, and infrastructure facilities where traditional power solutions cannot deliver. Hadron is advancing the Halo MMR through an integrated program of technical development, NRC licensing engagement, and a growing portfolio of strategic supply chain and deployment partnerships. For more information, please visit www.hadronenergy.com.