Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 441

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 441
---
 |     | 2025 | Nine Months Ended 
     September 30, |     | 2024 |         |
|:------------------------------------|:----|:-----|-------------------:|:----|:-----|--------:|:----|:-----|------------------:|:----|:-----|--------:|
| Research and development            |     | $    |             25,616 |     | $    |  22,248 |     | $    |            53,912 |     | $    |  36,198 |
| Selling, general and administrative |     |      |            173,179 |     |      | 104,955 |     |      |           464,809 |     |      | 129,989 |
|                                     |     | $    |            198,795 |     | $    | 127,203 |     | $    |           518,721 |     | $    | 166,187 |

Stock-based compensation expense capitalized to inventory for three and nine months ended September 30, 2025 and 2024 was insignificant.

As of September 30, 2025, the total unrecognized compensation cost related to all nonvested stock options was $1.5 million and the weighted-average period over which it is expected to be recognized is 1.27 years.

#### 12.

#### Revenue Recognition
Revenue recognized during the three and nine months ended September 30, 2025 and 2024 is disaggregated as follows:

|         |     | 2025 | Three Months Ended 
      September 30, |     | 2024 |         |     | 2025 | Nine Months Ended 
     September 30, |     | 2024 |           |
|:--------|:----|:-----|-------------------:|:----|:-----|--------:|:----|:-----|------------------:|:----|:-----|----------:|
| Product |     | $    |          4,147,701 |     | $    | 917,238 |     | $    |        10,534,436 |     | $    | 3,882,039 |
| Service |     |      |             44,400 |     |      |  38,732 |     |      |           115,494 |     |      |   150,129 |
|         |     | $