Equity Incentive Plan | Note 10. Equity Incentive Plan. Stock Options As of June 30, 2018, there was approximately $10,931,210 of total unrecognized compensation expense related to non-vested stock options. The cost is expected to be recognized over the remaining weighted average service period of 1.37 Stock based compensation expense recognized was as follows (in thousands): Three Months Ended June 30, 2018 2017 General and administrative $ 1,661,000 $ 807,000 Research and development 677,000 489,000 $ 2,338,000 $ 1,296,000 The Company uses the Black-Scholes option pricing model to determine the fair value of stock options granted. In accordance with ASC 718 for employees and non-employees, the compensation expense is amortized on a straight-line basis over the requisite service period, which approximates the vesting period. The Company accounts for forfeitures as they occur, rather than estimating forfeitures as of an award’s grant date. The expected volatility of options granted has been determined using the method described under ASC 718 using the expected volatility of similar companies. The expected term of options granted to employees in the current fiscal period has been based on the term by using the simplified “plain-vanilla” method as allowed under SAB No. 110. The expected term of options granted to non-employees and consultants is based on the grant’s full contractual life. Prior to the three months ended December 31, 2017, the Company used the full contractual term as the expected term in its Black Scholes model to estimate stock option value. The Company used the full contractual term because there was no history of exercise activity and the stock was thinly-traded on the OTC Market. Beginning in the three months ended December 31, 2017, the Company determined the use of the simplified method was more appropriate than the full contractual term due to the increased trading volume and activity during the quarter and the increased market and demand for shares. Based on these factors, the Company deemed it no longer appropriate to use the full contractual term for expected life, because these changes in the business indicate the likelihood that there will be exercise activity before completion of the full contractual term. The Company considered other methods to estimate expected term other than the simplified method. However, as noted above, there is no historical exercise data to provide a reasonable basis upon which to estimate expected term due to the limited period of time its equity shares have been publicly traded and no other refined estimate of expected life that is appropriate. The weighted average assumptions used to determine such values are presented in the following table: June 30, 2018 June 30, 2017 Risk free interest rate 2.87 % 2.17 % Expected volatility 75.09 % 90.02 % Expected term (in years) 5.91 10 Dividend yield 0 % 0 % The following is a summary of the status of the Company’s stock options as of June 30, 2018: Number of Options Weighted Average Exercise Price Outstanding at March 31, 2018 5,438,072 $ 5.11 Granted 1,867,400 2.90 Exercised — — Forfeited/Cancelled Outstanding at June 30, 2018 7,305,472 4.55 Options exercisable at June 30, 2018 3,544,980 5.23 Stock Options Outstanding Stock Options Vested Range of Exercise Price Number Outstanding at June 30, 2018 Weighted Average Exercise Price Weighted Average Remaining Life (Years) Aggregate Intrinsic Value Number Vested at June 30, 2018 Weighted Average Exercise Price Aggregate Intrinsic Value $2.30-$8.75 7,305,472 4.55 8.45 1,227,002 3,544,980 5.23 324,170 The intrinsic value, which is calculated as the excess of the market value of June 30, 2018 over the exercise price of the options, is approximately $1,227,002 and $324,170 for outstanding stock options and vested stock options, respectively. The market value as of June 30, 2018 was $3.16 as reported by the NASDAQ Capital Market. |