Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 463

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 463
---
.7 |     |     |              |           0.9 |
| Volatility                |             |     |          65 | %             |     |     |         65.0 |   % |     |     |         65.0 |             % |
| Risk free rate            |             |     |             | 4.5% - 5.5%   |     |     |          5.1 |   % |     |     |          4.7 |             % |
| Discount rate             |             |     |             | 9.7% - 25.8%  |     |     |         11.3 |   % |     |     |              | 24.4% - 29.4% |
| Probability of conversion |             |     |             | 25.0% - 55.0% |     |     |         25.0 |   % |     |     |         65.0 |             % |

<div align='center'>F-85</div>

#### GIGCAPITAL5, INC.

### Notes to Financial Statements
The following table presents information about the change in fair value of the Company’s Level 3 Working Capital Note during the years ended December 31, 2023 and 2022:

|                                  |     |   |   Year Ended 
 December 31, 
         2023 |     |   |   Year Ended 
 December 31, 
         2022 |
|:---------------------------------|:----|:--|-------------:|:----|:--|-------------:|
| Fair value - beginning of period |     | $ |      257,492 |     | $ |            — |
| Additions                        |     |   |    1,240,000 |     |   |      260,000 |
| Change in fair value             |     |   |        8,897 |     |   |       -2,508 |
| Fair value - end of period       |     | $ |    1,506,389 |     | $ |      257,492 |

<div align='center'>F-86</div>

#### GIGCAPITAL5, INC.

### Notes to Financial Statements

#### 9.

#### INCOME TAX
The sources of loss before provision for income taxes are as follows for the year ended December 31, 2023 and 2022:

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