Company: GIGGU
Filing Date: 2025-12-01
Form Type: 425
Source: 0001193125-25-303168
Chunk: 6

Company: GigCapital7 Corp.
Filing Date: 2025-12-01
Form: 425
Chunk 6
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CAPITAL7, HADRON AND THE PROPOSED BUSINESS COMBINATION. 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.

NEITHER THE SEC NOR ANY STATE SECURITIES REGULATORY AGENCY HAS APPROVED OR DISAPPROVED THE BUSINESS COMBINATION OR ANY INVESTMENT IN ANY
SECURITIES DESCRIBED HEREIN, PASSED UPON THE MERITS OR FAIRNESS OF THE BUSINESS COMBINATION OR ANY RELATED TRANSACTIONS OR PASSED UPON THE ADEQUACY OR ACCURACY OF THE DISCLOSURE IN THIS COMMUNICATION. ANY REPRESENTATION TO THE CONTRARY CONSTITUTES A
CRIMINAL OFFENSE.

Participants in the Solicitation

Hadron, 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 GIG’s shareholders in connection with the business combination. 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, 2024, filed with the SEC on March 6, 2025, as amended
by Amendment No. 1 on Form 10-K/A filed with the SEC on April 16, 2025. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies of GIG
shareholders in connection with the business combination will be set forth in the Registration Statement, along with information concerning the interests of Hadron’s and GigCapital7’s participants in the solicitation. Such interests may
in some cases be different from those of Hadron’s or GigCapital7’s equity holders generally.

No Offer or Solicitation

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or approval, nor
shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. This communication