Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 442

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 442
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 |          4,192,101 |     | $    | 955,970 |     | $    |        10,649,930 |     | $    | 4,032,168 |

Revenue recognized by geography during the three and nine months ended September 30, 2025 and 2024 is as follows:

|               |     | 2025 | Three Months Ended 
      September 30, |     | 2024 |         |     | 2025 | Nine Months Ended 
     September 30, |     | 2024 |           |
|:--------------|:----|:-----|-------------------:|:----|:-----|--------:|:----|:-----|------------------:|:----|:-----|----------:|
| United States |     | $    |          4,181,744 |     | $    | 942,265 |     | $    |        10,617,827 |     | $    | 4,000,590 |
| International |     |      |             10,357 |     |      |  13,705 |     |      |            32,103 |     |      |    31,578 |
|               |     | $    |          4,192,101 |     | $    | 955,970 |     | $    |        10,649,930 |     | $    | 4,032,168 |

Substantially all of the revenue recognized by the Company during the three and nine months ended September 30, 2025 and 2024 was recognized at a point in time. The Company had no contract assets as of September 30, 2025 and December 31, 2024. The Company had contract liabilities of $23,929 as of September 30, 2025, all of which is expected to be recognized as revenue in the next 12 months. The Company had contract liabilities of $49,365 as of December 31, 2024 . Revenue recognized during the three and nine months ended September 30, 2025 that was previously included in contract liabilities as of December 31, 2024 were $10,357 and $32,103, respectively.

#### 13.

#### Income Taxes
For the interim periods, the Company estimates its annual effective income tax rate and applies the estimated rate to the year-to-date income or loss before taxes. The Company