| | Risk free rate of return (1) | 1.69% - 4.02% | Expected share price volatility (2) | 39.73% - 42.56% | Expected life in years (3) | 5.89 years | Dividend yield (4) | 0% |
(1) Determined based on the U.S. Treasury yield in effect at the time of the grant for zero-coupon U.S. Treasury notes with remaining terms similar to the expected term of the options. (2) Determined based on a blend of the Company’s historic stock price volatility and the historic volatility of a peer group of publicly traded companies. (3) Determined using the “simplified method” for estimating the expected option life, which is the average of the weighted-average vesting period and contractual term of the option as the Company does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate expected term due to the limited period of time its common stock has been publicly traded. (4) Determined to be zero as the Company has not historically issued dividends.
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