Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 465

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 465
---
:----|:--|-------------:|:----|:--|-------------:|
| Statutory income tax benefit          |     | $ |     -757,149 |     | $ |     -480,415 |
| State income taxes, net of federal    |     |   |     -236,036 |     |   |     -184,760 |
| Warrant and note payable revaluation  |     |   |       47,377 |     |   |      -75,812 |
| Valuation allowance on start-up costs |     |   |    1,364,927 |     |   |    1,227,602 |
| Provision for income taxes            |     | $ |      419,119 |     | $ |      486,615 |

For the year ended December 31, 2023 and 2022, the effective tax rate differs from the U.S. statutory rate primarily due to the valuation allowance on the start-up costs.

<div align='center'>F-87</div>

#### GIGCAPITAL5, INC.

### Notes to Financial Statements
The tax effects of temporary differences that gave rise to significant portions of the deferred tax assets and liabilities as of December 31, 2023 and 2022 were as follows:

|                                       |     |   | December 31, 
         2023 |     |   | December 31, 
         2022 |
|:--------------------------------------|:----|:--|-------------:|:----|:--|-------------:|
| Deferred tax assets:                  |     |   |              |     |   |              |
| Start-up costs                        |     | $ |    2,895,226 |     | $ |    1,530,299 |
| Valuation allowance                   |     |   |   -2,895,226 |     |   |   -1,530,299 |
| Net deferred tax assets (liabilities) |     | $ |            — |     | $ |            — |

As of December 31, 2023 and 2022, the Company has recorded a valuation allowance of $2,895,226 and $1,530,299, respectively, to offset deferred tax assets related to its start-up costs. The valuation allowance increased by $1,364,927 and $1,227,602 for the years ended December 31, 2023 and 2022, respectively. As