Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 281

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 281
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 issued and outstanding immediately after giving effect to such exercise (which percentage may be decreased upon notice by Lynrock Lake Master Fund LP or increased to 9.99% upon 61 days’ notice by Lynrock Lake Master Fund LP). The address of the foregoing entities is c/o Lynrock Lake LP, 2 International Drive, Suite 130, Rye Brook, New York 10573.

(14) Includes 155,556 shares of Common Stock underlying Subscription Warrants held by the Selling Securityholder, and an additional 379,359 shares of Common Stock jointly owned by Michael & Mildred Brown. Michael Brown and Mildred Brown each serve as the Trustee of the Selling Securityholder, and each in this capacity can make voting and investment decisions on behalf of the Selling Securityholder. The business address of the above persons is 11508 Canterbury Circle, Leawood, KS 66211.

(15) Emil D. Kakkis is the Selling Securityholder and this includes 166,667 shares of Common Stock underlying Subscription Warrants. In addition, pursuant to a Schedule 13G filed with the SEC on March 26, 2025, 466,677 of the shares of Common Stock reported above are jointly owned by Emil D. Kakkis and Jenny Soriano and are held in the name of the Emil Kakkis and Jenny Soriano Living Trust. The address for these persons is 60 Leveroni Court, Novato, CA 94949.

(16) Includes 22,222 shares of Common Stock underlying Subscription Warrants. The business address of this person is 833 W 51st St, Kansas City, MO 64112.

(17) Includes 16,667 shares of Common Stock underlying Subscription Warrants. The business address of this person is 5740 Oakwood Rd, Mission Hills, KS 66208.

(18) Based on the total of 11,902,198 shares of Common Stock outstanding as of December 26, 2025.

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### DESCRIPTION OF SECURITIES
The following summary of certain material provisions of the Company’s securities does not purport to be complete and is subject to the provisions of the Charter, the Bylaws and applicable law. The applicable provisions of the Charter and the Bylaws that are filed with the registration statement of which this prospectus forms a part should be read carefully and in their entirety.

#### Authorized and Outstanding Stock
The Charter authorizes the issuance of 510,000