Company: GIGGU
Filing Date: 2025-09-29
Form Type: 425
Source: 0001193125-25-221783
Chunk: 185

Company: GigCapital7 Corp.
Filing Date: 2025-09-29
Form: 425
Chunk 185
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 each share of Class B Stock then issued and outstanding shall be automatically cancelled and extinguished and converted into one share of Common Stock;

WHEREAS, pursuant to the Business Combination Agreement, the Company is issuing shares of the Common Stock to the Holders designated on
hereto; and

WHEREAS, the Company desires to set forth certain matters regarding the ownership of the Registrable
Securities (as defined below) by the Holders.

NOW, THEREFORE, in consideration of the mutual covenants and agreements set forth herein,
and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I

DEFINITIONS

Section1.1 Definitions. For purposes of this Agreement, the following terms and variations thereof
have the meanings set forth below:

“Action” has the meaning set forth in .

“Adverse Disclosure” means any public disclosure of material non-public
information, which disclosure, in the good faith judgment of the Chief Executive Officer or Chief Financial Officer of the Company or the Board, in each case, after consultation with outside legal counsel to the Company, (i) would be required
to be made in any Registration Statement or Prospectus in order for the applicable Registration Statement or Prospectus not to contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or
necessary to make the statements contained therein (in the case of any prospectus and any preliminary prospectus, in the light of the circumstances under which they were made) not misleading, (ii) would not be required to be made at such time
if the Registration Statement were not being filed, declared effective or used, as the case may be, and (iii) the Company has a bona fide business purpose for not making such information public.

2

“Agreement” shall have the meaning given in the Preamble.

“Board” shall mean the Board of Directors of the Company.

“Business Combination” has the meaning given in the Recitals.

“Business Combination Agreement” has the meaning given in the Recitals.

“Business Day” means a day other than Saturday, Sunday or other day on which commercial banks in New York, New York are
authorized or required by law to close.

“Cayman Purchaser Warrant” has the meaning given in the Recitals.

“ClassA Shares” has the meaning given in the Recitals.

“ClassB Shares” has the meaning given in the Recitals.

“Class