January 27, 2026

GigCapital9 Corp. Announces Pricing of $220,000,000 Initial Public Offering

PALO ALTO, Calif.–(BUSINESS WIRE)–GigCapital9 Corp. (NASDAQ: GIXXU) (the “Company”), a Cayman Islands exempted company, the ninth special purpose acquisition (“PPE”) company launched by GigCapital Global, announced today that it priced its initial public offering of 22,000,000 units at $10.00 per unit. The units are expected to be listed on the Nasdaq Global Market (“NASDAQ”) and trade under the ticker symbol “GIXXU” beginning on January 27, 2026. Each unit consists of one (1) Class A ordinary share and one (1) right to receive one-fifth (1/5) of one Class A ordinary share. Once the securities comprising the units begin separate trading, the Class A ordinary shares and rights are expected to be listed on NASDAQ under the symbols “GIX” and “GIXXR”, respectively.

D. Boral Capital LLC is acting as sole book-running manager in the offering. The underwriters have been granted a 45-day option to purchase up to an additional 3,300,000 units offered by the Company to cover over-allotments, if any. The offering is expected to close on January 28, 2026, subject to customary closing conditions.

A registration statement relating to these securities was declared effective by the Securities and Exchange Commission on January 23, 2026. The offering is being made only by means of a prospectus. Copies of the prospectus may be obtained, when available, from D. Boral Capital LLC, Attn: Syndicate Department, 590 Madison Ave., 39th Floor, New York, New York 10022, by telephone at (212) 970-5150 or by email at dbccapitalmarkets@dboralcapital.com. Copies of the registration statement can be accessed through the SEC’s website at www.sec.gov.

This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.