Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 431

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 431
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5, the maturity of operating lease liabilities was as follows:

| Year ending December 31:     
 2025 (remaining)             |     |   | 120,503 |
|:-----------------------------|:----|:--|--------:|
| 2026                         |     |   | 490,449 |
| 2027                         |     |   | 206,864 |
| Total payments               |     |   | 817,816 |
| Less: Interest               |     |   | -54,912 |
| Present value of obligations |     | $ | 762,904 |

The operating lease expense for the three months ended September 30, 2025 and 2024 was $113,971 and $113,748, respectively, of which $5,754 and $5,532, respectively, were related to leases with a term of less than 12 months. The operating lease expense for the nine months ended September 30, 2025 and 2024 was $341,689 and $341,031, respectively, of which $17,040 and $16,383, respectively, were related to leases with a term of less than 12 months.

As of September 30, 2025, the weighted-average remaining lease term was 1.7 years. The weighted-average discount rate was 8% for the three and nine months ended September 30, 2025 and 2024. As of September 30, 2024, the weighted-average remaining lease term was 2.7 years and the weighted-average discount rate was 8%.

#### 9.

#### Contingencies

#### Litigation
The Company is subject to occasional lawsuits, investigations, and claims arising out of the normal conduct of business. As of the date the condensed consolidated financial statements were available to be issued, management is not aware of any pending claims that will have a material impact on the Company’s condensed consolidated financial statements.

<div align='center'>F-74</div>

#### QT IMAGING HOLDINGS, INC.

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

#### 10.

#### Stockholders’ Deficit

#### Common Stock
The Company's common stock trades on the OTCQB Venture Market tier under the symbol “QTIH.” Pursuant to the terms of the Amended and Restated Certificate of Incorporation, the Company is authorized and has available for issuance 500,000,