Company: QTIWW
Filing Date: 2025-11-03
Form Type: S-1
Source: 0001628280-25-048373
Chunk: 364

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-11-03
Form: S-1
Chunk 364
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 The Company and Summary of Significant Accounting Policies). Specifically, the number of common shares outstanding during periods before the Reverse Stock Split are divided by the exchange ratio of 3:1, such that each three shares of common stock were combined and reconstituted into one share of common stock effective October 23, 2025.

During the year ended December 31, 2024, a total of 766,333options were granted to employees and nonemployees with a weighted-average grant date fair value of $ 1.38per share. There were nooptions granted during year ended December 31, 2023.

The determination of the fair value of options granted during the year ended December 31, 2024 is computed using the Black-Scholes option pricing model with the following weighted-average assumptions:

| Stock price per share          |     | $ | 2.16 |     |
| Expected option term (years)   |     |   |      | 5.7 |
| Expected volatility            |     |   | 67.9 |   % |
| Risk-free rate of return       |     |   |  4.3 |   % |
| Expected annual dividend yield |     |   |    — |   % |

Option pricing models require the input of various subjective assumptions, including the option’s expected life and the price volatility of the underlying stock. The expected stock price volatility is based on the analysis of volatilities of the Company’s selected public peer group over a period commensurate with the expected term of the options. The expected term of employee options represents the weighted-average period the options are expected to remain outstanding and was derived using the simplified method for awards that qualify for its “plain-vanilla” options. All awards that are outstanding are qualified for “plain-vanilla” options. The risk-free interest rate is based on the U.S. Treasury interest rates whose term in consistent with the expected life of the stock options. No dividend yield is included as the Company has not issued any dividends and do not anticipate issuing any dividends in the future.

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#### QT IMAGING HOLDINGS, INC.

### Notes to Consolidated Financial Statements
The following table shows stock-based compensation expense by functional area in the consolidated statements of operations and comprehensive loss for the years ended December 31, 2024 and 2023:

|                                     |     | Year Ended December 31, |    2024 |     |   |