Company: QTIWW
Filing Date: 2025-12-29
Form Type: S-1/A
Source: 0001628280-25-058960
Chunk: 422

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-29
Form: S-1/A
Chunk 422
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 until February 26, 2030. The Company and Yorkville also entered into that certain Termination Agreement, dated February 26, 2025, pursuant to which the parties acknowledged the termination of the SEPA effective February 26, 2025. The fair value of the Yorkville Warrant at issuance amounted to $ 2,992,522. As a result of the extinguishment of the Yorkville Note, the Company recorded an expense of $ 0and $ 1,940,216, respectively, in other income (expense), net within the condensed consolidated statements of operations and comprehensive loss for the three and nine months ended September 30, 2025.

<div align='center'>F-70</div>

#### QT IMAGING HOLDINGS, INC.

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

As of December 31, 2024 , the outstanding amount of the Yorkville Note was $ 3,532,591 , net of the unamortized debt discount of $ 4,807,820 and accrued interest of $ 155,203 . Interest expense, including amortization of debt issuance costs, for the three months ended September 30, 2025 and 2024 was $ 0 and $ 1,244,332 , respectively. Interest expense, including amortization of debt issuance costs, for the nine months ended September 30, 2025 and 2024 was $ 519,591 and $ 2,431,398 , respectively.

Cable Car Note

In February 2024, GigCapital5 and QT Imaging entered into the Cable Car Note with Cable Car, pursuant to which Cable Car agreed to advance $ 1,500,000at the closing of the Business Combination, as was evidenced by the Loan, dated March 4, 2024, by and between QT Imaging and Cable Car. The Cable Car Note does notbear interest, and is due and payable 13months 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 into 60,000shares of the Company's common stock. In accordance with ASC 470-20