Christine M. Marshall - 03 Oct 2025 Form 3 Insider Report for GigCapital8 Corp. (GIW)

Role: Chief Financial Officer
Signature: /s/ Christine M. Marshall
Issuer symbol: GIW
Transactions as of: 03 Oct 2025
Net transactions value: $0
Form type: 3
Filing time: 07 Oct 2025, 21:11:49 UTC
Previous filing: 26 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Marshall Christine M	Chief Financial Officer	C/O GIGCAPITAL8 CORP., 1731 EMBARCADERO RD STE 200, PALO ALTO	/s/ Christine M. Marshall	07 Oct 2025	0002035575

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	GIW	Class B Ordinary Shares							03 Oct 2025	Class A Ordinary Shares	5,000		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	As described in the Issuer's registration statement on Form S-1, as amended (File No. 333-289479) under the heading "Description of Securities-Ordinary Shares", the Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination or earlier at the option of the holder on a one-for-one basis, subject to certain adjustments described therein and have no expiration date.

Content

As described in the Issuer's registration statement on Form S-1, as amended (File No. 333-289479) under the heading "Description of Securities-Ordinary Shares", the Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination or earlier at the option of the holder on a one-for-one basis, subject to certain adjustments described therein and have no expiration date.