Company: QTIWW
Filing Date: 2025-11-03
Form Type: S-1
Source: 0001628280-25-048373
Chunk: 410

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-11-03
Form: S-1
Chunk 410
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 2025, respectively.

<div align='center'>F-66</div>

#### QT IMAGING HOLDINGS, INC.

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

#### 4. Inventory
Inventory consisted of the following as of June 30, 2025 and December 31, 2024:

|                 |     |   | June 30, 2025 |     |   | December 31, 2024 |
|:----------------|:----|:--|--------------:|:----|:--|------------------:|
| Raw materials   |     | $ |     2,396,311 |     | $ |         2,551,947 |
| Work in process |     |   |       826,728 |     |   |           278,869 |
| Finished goods  |     |   |         8,059 |     |   |           309,903 |
| Total           |     | $ |     3,231,098 |     | $ |         3,140,719 |

#### 5. Property and Equipment, Net
Property and equipment, net consisted of the following as of June 30, 2025 and December 31, 2024:

|                                |     |          | Useful Life |   | June 30, 2025 |     |   | December 31, 2024 |
|:-------------------------------|:----|:---------|:------------|:--|--------------:|:----|:--|------------------:|
| Scanners                       |     | 5 Years  |             | $ |     1,904,491 |     | $ |         1,904,491 |
| Computer and lab equipment     |     | 3-5Years |             |   |     1,471,330 |     |   |         1,424,513 |
| Leasehold improvements         |     | Various  |             |   |       421,266 |     |   |           421,266 |
| Software                       |     | 3 Years  |             |   |        50,374 |     |   |            50,374 |
| Furniture and fixtures         |     | 7 Years  |             |   |        82,336 |     |   |            82,336 |
|                                |     |          |             |