Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 361

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 361
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Capital5 and QT Imaging entered into the Cable Car Loan with Cable Car, pursuant to which Cable Car agreed to advance $1,500,000 at the closing of the Business Combination, as was evidenced by the

<div align='center'>F-31</div>

#### QT IMAGING HOLDINGS, INC.

### Notes to Consolidated Financial Statements
Loan, dated March 4, 2024, by and between QT Imaging and Cable Car. The Loan does not bear interest, and is due and payable 13 months after issuance, unless the time for payment is accelerated as a result of an event of default. As full compensation to Cable Car for the Loan to QT Imaging in lieu of any simple or in-kind interest on the Loan, QT Imaging issued to Cable Car that number of shares of QT Imaging which at the completion of the Business Combination would be converted in accordance with the terms of the Business Combination Agreement i nto 60,000 shares of the Company's common stock. In accordance with ASC 470-20, the proceeds of $1,500,000 were recorded between the promissory note and common stock less debt origination costs of $40,740, consisting of legal fees, on a relative fair value basis.

As of December 31, 2024, the outstanding amount of the Cable Car Loan was $1,366,458, net of unamortized issuance costs of $133,542. Interest expense, including amortization of debt issuance costs, for the year ended December 31, 2024 was $353,530.

Future principal payments on the long-term debt as of December 31, 2024 are as follows:

| Year ending December 31:                   
 2025                                       |     |   |  9,924,195 |
|:-------------------------------------------|:----|:--|-----------:|
| 2026                                       |     |   |      9,197 |
| Total payments                             |     |   |  9,933,392 |
| Less: Unamortized debt issuance costs      |     |   | -4,938,362 |
| Less: Current maturities of long-term debt |     |   | -4,985,833 |
| Long-term debt                             |     | $ |      9,197 |

On February 26, 2025, the Yorkville Note and Cable Car Loan were repaid in full. As such, the outstanding balances as of December 31, 2024 were