Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 362

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 362
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 are convertible, at the holder’s option, into shares of common stock of the Company at the lower of $5.00 per share or the offering price in a financing of at

<div align='center'>F-24</div>

#### QT IMAGING, INC.

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

least $5,000,000 in equity from unaffiliated parties. As of December 31, 2023, an aggregate of 704,299 shares of common stock would be issued if the entire principal and interest under the 2020 Notes was converted. Management assessed whether the embedded features in the 2020 Notes should have been bifurcated from the debt host and concluded that none of the features were required to be accounted for separately from the debt instruments.

In November 2023, $200,000 of the 2020 Notes plus accrued interest of $33,644 was converted through a negotiated induced conversion to 100,000 shares of common stock, which resulted in an induced conversion expense of $168,356 to other expenses in the consolidated statements of operations and comprehensive loss. The induced conversion expense represented the fair value of the common stock issued upon conversion in excess of the common stock issuable under the original terms of the 2020 Notes. As of December 31, 2023 and 2022, the outstanding amount of the 2020 Notes was $3,143,725 and $3,343,725 and accrued interest of $377,772 and $230,627, respectively. Interest expense for the years ended December 31, 2023 and 2022 was $180,789 and $137,709, respectively.

#### Working Capital Loans
On May 3, 2023, the Company issued a promissory note (the “Working Capital Note”) to a shareholder for a principal amount of $250,000. The Working Capital Note was subsequently amended and restated six times on June 12, 2023 to add an additional principal amount of $100,000, August 15, 2023 to add an additional principal amount of $75,000, August 29, 2023 to add an additional principal amount of $100,000, September 12, 2023 to add an additional principal amount of $75,000, September 15, 2023 to add an additional principal