Company: QTIWW
Filing Date: 2025-11-03
Form Type: S-1
Source: 0001628280-25-048373
Chunk: 404

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-11-03
Form: S-1
Chunk 404
---
 modification on June 11, 2025 were as follows:

|                                |     |   | February 26, 2025 |   |     |   | June 11, 2025 |   |
|:-------------------------------|:----|:--|------------------:|:--|:----|:--|--------------:|:--|
| Fair value of common stock     |     | $ |              1.20 |   |     | $ |          1.50 |   |
| Exercise price                 |     | $ |              1.20 |   |     | $ |          1.20 |   |
| Expected warrant term (years)  |     |   |               5.0 |   |     |   |           4.7 |   |
| Expected volatility            |     |   |              51.6 | % |     |   |          39.2 | % |
| Risk-free rate of return       |     |   |               4.1 | % |     |   |           4.0 | % |
| Expected annual dividend yield |     |   |                 — | % |     |   |             — | % |

<div align='center'>F-63</div>

#### QT IMAGING HOLDINGS, INC.

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

The activity for the fair value of the Yorkville Warrant during the three and six months ended June 30, 2025 were as follows:

| Beginning balance, January 1, 2025                              |     | Yorkville Warrant |          — |           |
|:----------------------------------------------------------------|:----|:------------------|-----------:|----------:|
| Fair value at issuance                                          |     |                   |            | 2,992,522 |
| Change in fair value                                            |     |                   |    111,795 |           |
| Ending balance, March 31, 2025                                  |     |                   |  3,104,317 |           |
| Change in fair value                                            |     |                   |    484,872 |           |
| Reclassification of warrant liability upon warrant modification |     |                   | -3,589,189 |           |
| Ending balance, June 30, 2025                                   |     | $                 |          — |           |

Earnout Liability

The fair value of the Merger Consideration