Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 416

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 416
---
266 |
| Software                       |     | 3 Years   |             |   |             50,374 |     |   |            50,374 |
| Furniture and fixtures         |     | 7 Years   |             |   |             82,336 |     |   |            82,336 |
|                                |     |           |             |   |          3,929,798 |     |   |         3,882,980 |
| Less: accumulated depreciation |     |           |             |   |         -3,802,671 |     |   |        -3,687,197 |
|                                |     |           |             | $ |            127,127 |     | $ |           195,783 |

Depreciation expense was $39,550 and $19,508 for the three months ended September 30, 2025 and 2024, respectively. Depreciation expense was $115,474 and $114,144 for the nine months ended September 30, 2025 and 2024, respectively.

#### 6.

#### Balance Sheet Details
Prepaid expenses and other current assets consisted of the following as of September 30, 2025 and December 31, 2024:

|                         |     |   | September 30, 2025 |     |   | December 31, 2024 |
|:------------------------|:----|:--|-------------------:|:----|:--|------------------:|
| Prepaid insurance       |     | $ |            173,617 |     | $ |           179,143 |
| Other receivable        |     |   |             23,345 |     |   |           131,865 |
| Deferred issuance costs |     |   |            251,963 |     |   |                 — |
| Other                   |     |   |            617,876 |     |   |           205,544 |
| Total                   |     | $ |          1,066,801 |     | $ |           516,552 |

<div align='center'>F-67</div>

#### QT IMAGING HOLDINGS, INC.

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

Accrued expenses and other current liabilities consisted of the following as of September 30, 2025 and December 31, 2024:

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