Company: GIGGU
Filing Date: 2025-09-29
Form Type: 425
Source: 0001193125-25-221783
Chunk: 183

Company: GigCapital7 Corp.
Filing Date: 2025-09-29
Form: 425
Chunk 183
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 Hadron (as defined below) listed under “Holder” on the signature page hereto (each such party to this Agreement, a “Holder” and
collectively the “Holders”). Any capitalized term used but not defined herein will have the meaning ascribed to such term in the Business Combination Agreement (as defined below).

RECITALS

WHEREAS, the
Company, Sponsor and other parties to the Original RRA entered into the Original RRA on August 28, 2024;

WHEREAS, the Original RRA
provides that it may be amended upon the written consent of the Company and the holders of at least a majority in interest of the Registrable Securities as such term is defined in the Original RRA at the time in question (which majority interest
must include Spartan if such amendment or modification affects in any way the rights of Spartan hereunder); provided, however, that notwithstanding the foregoing, any amendment thereto that adversely affects one holder, solely in his, her or its
capacity as a holder of the shares of the Company, in a manner that is materially different from the other holders (in such capacity) shall require the consent of the holder so affected;

WHEREAS, the Sponsor is the holder of the majority in interest of the Registrable Securities as such term is defined in the Original RRA, and
it and the Company desires to amend and restate in its entirety the Original RRA and to do so in a manner that does not amend or modify in any way the rights of Spartan under the Original RRA or otherwise adversely affect any one holder in a manner
that is materially different from the other holders;

WHEREAS, on August 28, 2024, the Company and the Sponsor entered into a warrant
purchase agreement (the “Warrant Purchase Agreement”), pursuant to which the Sponsor purchased an aggregate of 3,719,000 warrants in a private placement that closed simultaneously with the Company’s underwritten public
offering (“Private Placement Warrant”), with each such Private Placement Warrant entitling the holder thereof to purchase one Class A ordinary share of the Company, par value $0.0001 per share (the
“ClassA Shares”) for an exercise price of $11.50 per share, subject to adjustment as provided therein;

WHEREAS, the Sponsor and certain institutional investors that are parties to the Original RRA acquired from the Company prior to entry into
the Original RRA, Class B ordinary shares of the Company, par value $0.0001 per