Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 350

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 350
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 278,869 |     |   |         1,627,802 |
| Finished Goods  |     |   |           309,903 |     |   |           261,031 |
| Total           |     | $ |         3,140,719 |     | $ |         4,418,197 |

<div align='center'>F-26</div>

#### QT IMAGING HOLDINGS, INC.

### Notes to Consolidated Financial Statements

#### 5. Property and Equipment, Net
Property and equipment, net consisted of the following as of December 31, 2024 and 2023:

|                                |     |           | Useful Life |   | December 31, 2024 |     |   | December 31, 2023 |
|:-------------------------------|:----|:----------|:------------|:--|------------------:|:----|:--|------------------:|
| Scanners                       |     | 5 Years   |             | $ |         1,904,491 |     | $ |         3,309,957 |
| Computer and lab equipment     |     | 3-5 Years |             |   |         1,424,513 |     |   |         1,359,491 |
| Leasehold improvements         |     | Various   |             |   |           421,266 |     |   |           421,266 |
| Software                       |     | 3 Years   |             |   |            50,374 |     |   |            40,599 |
| Furniture and fixtures         |     | 7 Years   |             |   |            82,336 |     |   |            82,336 |
|                                |     |           |             |   |         3,882,980 |     |   |         5,213,649 |
| Less: accumulated depreciation |     |           |             |   |        -3,687,197 |     |   |        -4,722,729 |
|                                |     |           |             | $ |           195,783 |     | $ |           490,920 |

Depreciation expense was $140,665 and $294,813 for the years ended December 31, 2024 and 2023, respectively.

#### 6. Intangible Assets, Net
Intangible assets, net consisted of the following as of December 31