Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 590

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 590
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, or in addition to, that contained in this proxy statement/prospectus. Therefore, if anyone does give you information of this sort, you should not rely on it. The information contained in this proxy statement/prospectus speaks only as of the date hereof unless the information specifically indicates that another date applies.

If you would like additional copies of this proxy statement/prospectus, or if you have questions about the business combination, you should contact via phone or in writing:

<div align='center'>GigCapital7 Corp.

1731 Embarcadero Rd., Suite 200

Palo Alto, CA 94303

(650) 276-7040</div>

You may also obtain these documents, without charge, by requesting them in writing or by telephone from GigCapital7’s proxy solicitation agent at the following address and telephone number:

<div align='center'>Morrow Sodali LLC

333 Ludlow Street, 5th Floor, South Tower

Stamford, CT 06902

Telephone: (203) 658-9400 (Call Collect)

Or

Call Toll-Free: (800) 662-5200

Email: GIA.info@investor.morrowsodali.com</div>

If you are a shareholder of GigCapital7 and would like to request documents, please do so no later than[•], 2026 (five (5)Business Days before the extraordinary general meeting) in order to receive them before the extraordinary general meeting.If you request any documents from GigCapital7, GigCapital7 will mail them to you by first class mail, or another equally prompt means. Information and statements contained in this proxy statement/prospectus or any Annex to this proxy statement/prospectus are qualified in all respects by reference to the copy of the relevant contract or other Annex filed as an exhibit to the registration statement of which this proxy statement/prospectus forms a part, which includes exhibits incorporated by reference from other filings made with the SEC.

<div align='center'>348</div>

INDEX TO FINANCIAL STATEMENTS GIGCAPITAL7 CORP. FINANCIAL STATEMENTS Unaudited Financial Statements of GigCapital7, Corp. as of and for the six months ended June 30, 2025

|                                                                   |     | Page |     |
| Condensed Financial Statements (Unaudited)                        |     |      | F-2 |
| Condensed Balance Sheets                                          |     |      | F-2 |
| Condensed Statement of