Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 25

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 25
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’s initial public offering (September 28, 2025), (b) in which we have total annual gross revenue of at least $1.235 billion, or (c) in which we are deemed to be a “large accelerated filer” under the rules of the SEC with at least $700.0 million of outstanding securities held by non-affiliates; and (ii) the date on which we have issued more than $1.00 billion in non-convertible debt securities during the prior three-year period.

We are also a “smaller reporting company” as defined in the U.S. securities laws and regulations. We may continue to be a smaller reporting company even after we are no longer an emerging growth company. We may take advantage of certain of the scaled disclosures available to smaller reporting companies and will be able to take advantage of these scaled disclosures for so long as the market value of our voting and non-voting Common Stock held by non-affiliates is less than $250.0 million measured on the last business day of our second fiscal quarter, or our annual revenue is less than $100.0 million during the most recently completed fiscal year and the market value of our voting and non-voting Common Stock held by non-affiliates is less than $700.0 million measured on the last business day of our second fiscal quarter.

As a result, the information in this prospectus and that we provide to our investors in the future may be different than what you might receive from other public reporting companies.

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#### Table of Contents
THE OFFERING

| Issuer                                                    |     | QT Imaging Holdings, Inc. (f/k/a GigCapital5, Inc.).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Shares of Common Stock Offered by the Selling Stockholder |     | We are registering the resale by the Selling Securityholders of up to 8,807,116 shares of Common Stock, consisting of (i) 4,383,558 PIPE Shares, (ii) 4,383,558 PIPE Warrant Shares issuable on the exercise of the PIPE Warrants held by the Purchasers, and (iii) 40,000 ICR Shares.                                                                                                                                                                                                                                                                       |
| Terms of the Offering                                     |     | The Selling Securityholders will determine when and how they will dispose of the shares of Common Stock registered under this prospectus for resale.                                                                                                                                                                                                                                                                                                                                                                                                         |
| Shares Outstanding Prior to the Offering                  |     | As of January 15,