Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 382

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 382
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 those goods or services. Training and maintenance services are generally recognized upon invoicing in amounts that correspond directly with the value to the customer of the performance completed to date which primarily includes professional service arrangements entered on a time and materials basis.

All of the revenue recognized by the Company during the three and nine months ended September 30, 2024 and 2023 was recognized at a point in time.

<div align='center'>F-38</div>

#### QT IMAGING HOLDINGS, INC.

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

Revenue recognized during the three and nine months ended September 30, 2024 and 2023 is disaggregated as follows:

|         |     | 2024 | Three Months Ended 
      September 30, |     | 2023 |        |     | 2024 | Nine Months Ended 
     September 30, |     | 2023 |        |
|:--------|:----|:-----|-------------------:|:----|:-----|-------:|:----|:-----|------------------:|:----|:-----|-------:|
| Product |     | $    |            917,238 |     | $    |  6,634 |     | $    |         3,882,039 |     | $    | 12,881 |
| Service |     |      |             38,732 |     |      | 18,023 |     |      |           150,129 |     |      | 22,523 |
|         |     | $    |            955,970 |     | $    | 24,657 |     | $    |         4,032,168 |     | $    | 35,404 |

Revenue recognized by geography during the three and nine months ended September 30, 2024 and 2023 is as follows:

|               |     | 2024 | Three Months Ended 
      September 30, |     | 2023 |        |     | 2024 | Nine Months Ended 
     September 30, |     | 2023 |        |
|:--------------|:----|:-----|-------------------:|:----|:-----|-------:|:----|:-----|------------------:|:----|:-----|-------:|
| United States |     | $    |            942,265 |