Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 406

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 406
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INGS, INC.

### Notes to Condensed Consolidated Financial Statements
<div align='center'>(Unaudited)</div>

|                        | Description: |     | Level |   |     |   | September 30, 2025 |     |   | December 31, 2024 |
|:-----------------------|:-------------|:----|:------|--:|:----|:--|-------------------:|:----|:--|------------------:|
| Assets:                |              |     |       |   |     |   |                    |     |   |                   |
| Certificate of deposit |              |     |       | 2 |     | $ |             20,000 |     | $ |            20,000 |
| Liabilities:           |              |     |       |   |     |   |                    |     |   |                   |
| Warrant Liability      |              |     |       | 2 |     | $ |            105,834 |     | $ |            22,234 |
| Earnout liability      |              |     |       | 3 |     | $ |          2,510,000 |     | $ |           440,000 |
| Derivative liability   |              |     |       | 3 |     | $ |                  — |     | $ |           303,300 |

#### Warrant Liability
The Company has determined that the warrants that were a constituent part of (i) the private placement units that were issued in a private placement sale by GigCapital5 prior to the Merger and (ii) the private placement units that were issued upon conversion of working capital notes issued by GigCapital5 prior to the Merger, which conversion occurred concurrent with the Merger (“Private Warrants”) are subject to treatment as a liability, as the transfer of the warrants to anyone other than the purchasers or their permitted transferees would result in these warrants having substantially the same terms as the warrants included in the public units that were issued by GigCapital5 prior to the Merger (“Public Warrants”). The Company determined that the fair value of each Private Warrants approximates the fair value of a Public Warrant. Accordingly, the Private Warrants are valued upon observable data and have been classified as Level 2 financial instruments. As of September 30, 2025 and December 31, 2024 , a total of 889,364 Private Warrants to purchase 296,445 shares of