Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 430

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 430
---
,022,966 |
| Long-term debt                             |     | $ |    272,879 |

#### 8.

#### Leases
The Company leases its operating facilities in Novato, California, under a non-cancelable operating lease through May 31, 2027. There are no options or rights to extend the term of this lease.

<div align='center'>F-73</div>

#### QT IMAGING HOLDINGS, INC.

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

The following table reflects the Company’s right-of-use (“ROU”) assets and lease liabilities as of September 30, 2025 and December 31, 2024:

|                                      |     |   | September 30, 2025 |     |   | December 31, 2024 |
|:-------------------------------------|:----|:--|-------------------:|:----|:--|------------------:|
| Assets:                              |     |   |                    |     |   |                   |
| Operating lease ROU assets, net      |     | $ |            666,529 |     | $ |           935,246 |
| Liabilities:                         |     |   |                    |     |   |                   |
| Operating lease liabilities, current |     | $ |            441,634 |     | $ |           405,678 |
| Operating lease liabilities          |     |   |            321,270 |     |   |           656,955 |
|                                      |     | $ |            762,904 |     | $ |         1,062,633 |

The following table presents supplemental cash flow information related to the Company’s operating leases:

|                                            |     | 2025 | Three Months Ended 
      September 30, |     | 2024 |         |     | 2024 | Nine Months Ended 
     September 30, |     | 2023 |         |
|:-------------------------------------------|:----|:-----|-------------------:|:----|:-----|--------:|:----|:-----|------------------:|:----|:-----|--------:|
| Operating cash flows from operating leases |     | $    |            120,503 |     | $    | 116,994 |     | $    |           355,661 |     | $    | 345,302 |

As of September 30, 202