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

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 424
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 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 $1,500,000 at 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 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 into 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.

On January 9, 2025, the Company and Cable Car entered into an Omnibus Amendment (the “Cable Car Amendment”) to amend certain terms of the Cable Car Note, including a reduction of the conversion price for the Cable Car Note to $1.752 per share. Further, the Cable Car Amendment provides that the maturity date for the Cable Car Note shall be extended to March 31, 2026, in consideration for which, the Company shall pay an extension fee (the “Extension Fee”) of $90,000 to Cable Car, with such fee being added to the amount due and payable on such maturity date, unless the Cable Car Note is earlier converted pursuant to its terms, in which event the