Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 366

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 366
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1, The Company and Summary of Significant Accounting Policies). Specifically, the number of common shares outstanding during periods before the Reverse Stock Split are divided by

<div align='center'>F-34</div>

#### QT IMAGING HOLDINGS, INC.

### Notes to Consolidated Financial Statements
the exchange ratio of 3:1, such that each three shares of common stock were combined and reconstituted into one share of common stock effective October 23, 2025.

The fair value of the QT Imaging warrants issued as part of the 2022 Offering and included in stockholders’ deficit in the consolidated balance sheets was $462,413 for the year ended December 31, 2023. The fair value of the remaining warrant granted during the year ended December 31, 2023 was $15,317 and was recorded as issuance costs against the proceeds received from the 2022 Offering. There were no QT Imaging warrants issued during the year ended December 31, 2024.

On March 4, 2024 and in accordance with the terms of the Business Combination Agreement, the Company cancelled and terminated all outstanding warrants that were deemed out of the money with an exercise price of or above $35.01 per warrant, including all warrants sold as part of the Units in the 2022 Offering and warrants that were issued to consultants and placement agents in association with debt issuances and past private offerings.

Warrants (Public Warrants, Private Placement Warrants, Working Capital Note Warrants, and PIPE Warrants)

Warrants will be exercisable a t $34.50 p er share, and pursuant to the terms of the warrant agreement governing such warrants (the “Warrant Agreement”), the exercise price and number of warrant shares issuable on exercise of the warrants may be adjusted in certain circumstances including in the event of a stock dividend, extraordinary dividend or recapitalization, reorganization, merger or consolidation of the Company. In addition, if (x) the Company issues additional shares of common stock or equity-linked securities for capital raising purposes in connection with the closing of its initial Business Combination at an issue price or effective issue price of less than $27.60 p er share of common stock (with such issue price or effective issue price to be determined in good faith by the Company’s Board of Directors, and in the case of any such issuance to the Company’s Founder or its affiliates, without taking into account any Founder Shares held by it prior to such issuance), (y) the aggregate gross proceeds from such issu