Dr. Avi S. Katz - 23 Jan 2026 Form 3 Insider Report for GigCapital9 Corp. (GIX)

Role
Chief Executive Officer, Director, 10%+ Owner
Signature
Avi. S. Katz, individually
Issuer symbol
GIX
Transactions as of
23 Jan 2026
Net transactions value
$0
Form type
3
Filing time
26 Jan 2026, 20:44:47 UTC
Previous filing
23 Jan 2026
SEC
View on sec.gov

Reporting Owners (3)

Name Relationship Address Signature Signature date CIK
Katz Avi S Chief Executive Officer, Director, 10%+ Owner C/O GIGCAPITAL9 CORP., 1731 EMBARCADERO ROAD, SUITE 200, PALO ALTO Avi. S. Katz, individually 26 Jan 2026 0001451693
GigAcquisitions9 Corp. 10%+ Owner C/O GIGCAPITAL9 CORP., 1731 EMBARCADERO ROAD, SUITE 200, PALO ALTO Avi. S. Katz, as Chief Executive Officer of GigAcquisitions9 Corp. 26 Jan 2026 0002098711
Dinu Raluca Director, 10%+ Owner C/O GIGCAPITAL9 CORP., 1731 EMBARCADERO ROAD, SUITE 200, PALO ALTO Dr. Raluca Dinu, individually 26 Jan 2026 0001430575

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding GIX Class A ordinary shares 10,000 23 Jan 2026 GigAcquisitions9 Corp. F1, F2

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 GIX Class B ordinary shares 23 Jan 2026 Class A ordinary shares 6,472,519 GigAcquisitions9 Corp. F2, F3, F4
holding GIX Right 23 Jan 2026 Class A ordinary shares 2,000 GigAcquisitions9 Corp. F2, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Includes 10,000 Class A ordinary shares underlying the private placement units to be purchased concurrently with the initial public offering.
F2 The Class B ordinary shares and Class A ordinary shares underlying the private placement units are held directly by GigAcquisitions9 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned equally (50% each) by Dr. Katz, the Issuer's Chief Executive Officer and Chairman of the Board of Directors, and Dr. Raluca Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.
F3 The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-291869) and have no expiration date.
F4 Includes 6,472,519 Class B ordinary shares of the Issuer acquired by the Sponsor prior to the Issuer's initial public offering convertible for the Issuer's Class A ordinary shares, of which 844,249 Class B ordinary shares remain subject to forfeiture depending on the extent to which the underwriters' over-allotment option is exercised.
F5 Includes 2,000 rights underlying the private placement units, which are sold in a private placement taking place simultaneously with the Issuer's initial public offering. Each right is exchangeable for one-fifth of one Class A ordinary share upon the completion of the Issuer's initial business combination.