Company: QTIWW
Filing Date: 2025-01-16
Form Type: S-1
Source: 0001628280-25-001723
Chunk: 1

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-01-16
Form: S-1
Chunk 1
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 or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 under the Securities Exchange Act of 1934:

| Large accelerated filer |     | o |     | Accelerated filer         |     | o |
| Non-accelerated filer   |     | x |     | Smaller reporting company |     | x |
|                         |     |   |     | Emerging growth company   |     | x |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. o

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with section 8(a) of the Securities Act of 1933 or until the registration statement shall become effective on such date as the Commission acting pursuant to said section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. Neither we nor the Selling Securityholders may sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. PRELIMINARY PROSPECTUS SUBJECT TO COMPLETION-DATED JANUARY 16, 2025 QT IMAGING HOLDINGS, INC. 8,807,116 Shares of Common Stock

This prospectus relates solely to the offer and sale from time to time of up to an aggregate 8,807,116 shares of the common stock, par value $0.0001 per share (the “ Common Stock ”), of QT Imaging Holdings, Inc. (the “ Company ,” “ we ,” “ our ” or “ us ”) by the selling securityholders identified in this prospectus (the “ Selling Securityholders ”). Such shares consist of (i) 4,383,558 shares of Common Stock (the “ PIPE Shares ”) that have been issued to certain of the Selling Securityholders who are “ Purchasers ” under a Securities Purchase Agreement, dated November