Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 358

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 358
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F-21</div>

#### QT IMAGING, INC.

### NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<div align='center'>For the years ended December 31, 2023 and 2022</div>

The options outstanding and exercisable as of December 31, 2023 were as follows:

| Exercise Prices |       |     | Number Outstanding |     |           |     | Weighted-Average Remaining Contractual Life (years) |     |     |     | Weighted- Average Exercise Price |       |     | Number Exercisable |     |           |     | Weighted- Average Exercise Price |       |
|:----------------|------:|:----|:-------------------|:----|----------:|:----|:----------------------------------------------------|:----|----:|:----|:---------------------------------|------:|:----|:-------------------|:----|----------:|:----|:---------------------------------|------:|
| $               |  6.50 |     |                    |     |   453,323 |     |                                                     |     | 8.4 |     | $                                |  6.50 |     |                    |     |   341,559 |     | $                                |  6.50 |
|                 |  8.50 |     |                    |     | 2,585,671 |     |                                                     |     | 6.6 |     |                                  |  8.50 |     |                    |     | 2,421,609 |     |                                  |  8.50 |
|                 | 10.00 |     |                    |     |   607,927 |     |                                                     |     | 7.0 |     |                                  | 10.00 |     |                    |     |   607,928 |     |                                  | 10.00 |
|                 |       |     |                    |     | 3,646,921 |     |                                                     |     | 6.9 |     | $                                |  8.50 |     |                    |     | 3,371,096 |     | $                                |  8.57 |

The determination of the fair value of options granted during the year ended December 31, 2022 is computed using the Black-Scholes option pricing model with the following weighted-average assumptions:

|                                |     | 2022 |      |     |
| Expected option term