Company: SRFM
Filing Date: 2025-03-21
Form Type: 10-K
Source: 0000950170-25-043326
Chunk: 133

Company: SURF AIR MOBILITY INC.
Filing Date: 2025-03-21
Form: 10-K
Item: Item 1B
Chunk 133
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 notes with the same maturity as the expected term of the underlying options was used as the average risk-free interest rate.

•Expected Term—The expected term of options granted to employees was determined based on management’s expectations of the options granted, which are expected to remain outstanding. Where appropriate, we calculated the expected term using the simplified method for “plain vanilla” stock option awards.

•Expected Volatility—Given our limited trading history subsequent to the direct listing, there is limited substantive share price history to calculate volatility and, as such, we have elected to use an approximation based on the volatility of other comparable public companies, which compete directly with us, over the expected term of the options.

•Dividend Yield—We have not issued regular dividends on common shares in the past nor do we expect to issue dividends in the future. As such, the dividend yield has been estimated to be zero.

We will continue to use judgment in evaluating the expected volatility and expected terms utilized in our stock-based compensation expense calculations on a prospective basis. As we continue to accumulate additional data related to our common stock, we may refine our estimates, which could materially impact our future stock-based compensation expense. Additionally, had we arrived at different assumptions of stock price volatility or expected lives of our stock options, our stock-based compensation expense and results of operations may be materially different.

Restricted Stock Units

The fair value of RSUs is estimated based on the fair value of our common stock on the grant date. Estimating the grant date fair value of the common stock underlying RSU grants prior to our direct listing was highly judgmental due to the lack of an observable market for our common stock. Prior to our direct listing, the fair value of the Company’s common stock was determined by considering a number of objective and subjective factors including: contemporaneous third-party valuations of our common stock, sales of our redeemable convertible preferred stock to outside investors in arms-length transactions, the Company’s operating and financial performance, the lack of marketability, and the general and industry-specific economic outlook, amongst other factors. Estimating the grant date fair value of the RSUs, including the PSUs discussed below, was highly sensitive due to the volume of RSUs granted and increasing fair value of our common stock as we approached our direct listing. For RSUs granted prior to the Company’s direct listing, all awards were deemed to have vested upon the satisfaction of both a service-based vesting condition and a liquidity event-related performance vesting condition tied to the direct listing. 

Subsequent to our direct listing,