GigCapital5(GIA) - Prospectus

As filed with the U.S. Securities and Exchange Commission on November 3, 2025. Registration No. 333- FORM S-1 REGISTRATION STATEMENT UNDER UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 THE SECURITIES ACT OF 1933 QT Imaging Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code No.) Delaware 6770 85-1728920 (I.R.S. Employer Identification No.) Dr. Raluca Din ...