Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 360

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 360
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 was awarded a grant of up to $1,078,347 as a subaward through the Board of Trustees of the University of Illinois for the purpose of developing a quantitative ultrasound breast scanner for identifying early response of breast cancer to chemotherapy. The grant is a cost reimbursement subaward that is allocated annually over five years, subject to the availability of funds and satisfactory progress of the project. The award expires July 31, 2027 and may be terminated by either party with 30 days written notice. Any grant proceeds

<div align='center'>F-22</div>

#### QT IMAGING, INC.

### NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<div align='center'>For the years ended December 31, 2023 and 2022</div>

received do not require repayment. Through the year ended December 31, 2023, the Company incurred total costs of $349,054 against year one allocation of $351,994 and year two allocation of $194,566. During the year ended December 31, 2023, the Company incurred costs of $318,276, of which $277,037 of grant income was recognized as an offset to research and development expense and $41,239 was recognized as an offset to selling, general and administrative expense in the consolidated statements of operations and comprehensive loss. During the year ended December 31, 2022, the Company incurred costs of $30,778, of which $22,503 of grant income was recognized as an offset to research and development expense and $8,275 was recognized as an offset to selling, general and administrative expense in the consolidated statements of operations and comprehensive loss. As of December 31, 2023 and 2022, the grant receivable was $161,638 and $30,778, respectively, and is included in prepaid expenses and other current assets on the consolidated balance sheets.

#### 12.

#### Income Taxes
Loss before income tax expense consisted of the following for the years ended December 31:

|                                      |     |   |       2023 |     |   |       2022 |
|:-------------------------------------|:----|:--|-----------:|:----|:--|-----------:|
| United States                        |     | $ | -6,097,351 |     | $ | -6,254,468 |
| International                        |     |   |          — |     |   |          — |
| Total loss before income tax expense |     | $