IMPORTANT NOTICES
About GigCapital7
GigCapital7 is a blank check company,
also commonly referred to as a special purpose acquisition company, or SPAC, formed for the purpose of entering into a merger, capital stock exchange, asset acquisition, stock purchase reorganization or similar business combination with one or more
businesses or entities. While GigCapital7’s efforts to identify a target business may span many industries, the focus of GigCapital7’s search is for prospects within the technology, media, and telecommunications, artificial intelligence
and machine learning, cybersecurity, medical technology and medical equipment, semiconductor and sustainable industries. GigCapital7 was sponsored by GigAcquisitions7, LLC, which was founded by GigFounders, LLC, each a member entity of GigCapital
Global, and formed for the purpose of entering into a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization, or similar business combination with one or more businesses.
On September 27, 2025, GigCapital7 entered into the Business Combination Agreement with Merger Sub and the Company, pursuant to the terms of which,
Merger Sub will merge with and into the Company, with the Company surviving as a wholly-owned subsidiary of GigCapital7, which will be renamed as Hadron Energy, Inc.
Additional Information and Where to Find It
In
connection with the proposed Business Combination between GigCapital7 and the Company, GigCapital7 has filed the Proxy Statement, which includes a prospectus, with the SEC, and has commenced distribution of the Proxy Statement to GigCapital7’s
shareholders in connection with GigCapital7’s solicitation of proxies for the shareholder vote in connection with the Business Combination and related transactions, and the other matters described in the Proxy Statement. GigCapital7 is mailing
the Proxy Statement and other relevant documents to its shareholders as of April 15, 2026, the record date established for voting on the proposed Business Combination.
BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, GIGCAPITAL7’S SHAREHOLDERS AND OTHER INTERESTED PARTIES ARE URGED TO READ, WHEN AVAILABLE, THE
DEFINITIVE PROXY STATEMENT/FINAL PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE SEC IN CONNECTION WITH GIGCAPITAL7’S SOLICITATION OF PROXIES FOR THE EXTRAORDINARY GENERAL MEETING OF ITS SHAREHOLDERS TO BE HELD
TO APPROVE THE BUSINESS COMBINATION AGREEMENT, THE BUSINESS COMBINATION AND OTHER MATTERS AS DESCRIBED IN THE DEFINITIVE PROXY STATEMENT/FINAL PROSPECTUS BECAUSE THESE DOCUMENTS WILL CONTAIN IMPORTANT INFORMATION ABOUT GIGCAPITAL7, THE COMPANY AND
THE PROPOSED TRANSACTIONS. Shareholders and other interested parties may obtain a copy of these documents, without charge, at the SEC’s website located at www.sec.gov or by directing a written request to GigCapital7 Corp., Attn:
Corporate Secretary, 1731 Embarcadero Rd., Suite 200, Palo Alto, CA 94303.
NEITHER THE SEC NOR ANY STATE SECURITIES REGULATORY AGENCY HAS APPROVED OR
DISAPPROVED THE TRANSACTIONS DESCRIBED HEREIN, PASSED UPON THE MERITS OR FAIRNESS OF THE TRANSACTIONS OR ANY RELATED TRANSACTIONS OR PASSED UPON THE ADEQUACY OR ACCURACY OF THE DISCLOSURE IN THIS CURRENT REPORT. ANY REPRESENTATION TO THE CONTRARY
CONSTITUTES A CRIMINAL OFFENSE.
Participants in the Solicitation
The Company, GigCapital7 and their respective directors, executive officers, management and employees, under SEC rules, may be deemed to be participants in a
solicitation of proxies of GigCapital7’s shareholders in connection with the Business Combination and related transactions. Investors and shareholders may obtain more detailed information regarding the names, affiliations, and interests of
GigCapital7’s directors and executive officers in its filings with the SEC, including GigCapital7’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC
on March 6, 2026. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies of GigCapital7’s shareholders in connection with the Business Combination is set forth in the Proxy
Statement, along with information concerning the interests of the Company’s and GigCapital7’s participants in the solicitation. Such interests may in some cases be different from those of the Company’s or GigCapital7’s equity
holders generally. Investors and security holders may obtain free copies of these documents as described above.