Stock Based Compensation
|6 Months Ended|
Jun. 30, 2018
|Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]|
|Stock Based Compensation||
NOTE 11 — STOCK-BASED COMPENSATION
The Company recognizes stock-based compensation in accordance with ASC 718, “Compensation—Stock Compensation.” Stock-based compensation expense, which consists of the compensation cost for employee stock options granted under the 2009 Stock Plan, as amended (the “2009 Stock Plan”), the Company’s 2014 Equity Incentive Plan, as amended (the “2014 Equity Incentive Plan”), the Company’s 2018 Equity Incentive Plan (the “2018 Equity Incentive Plan”) and the value of options issued to non-employees for services rendered, was allocated to research and development and general and administrative expenses in the unaudited consolidated statements of operations. Stock-based compensation for the three and six months ended June 30, 2018 and 2017 were (in thousands):
The Company estimated the fair value of stock options granted using the Black-Scholes option-pricing formula and a single option award approach. This fair value is being amortized ratably over the requisite service periods of the awards, which is generally the vesting period. The fair value of employee stock options was estimated using the following weighted-average assumptions for the three and six months ended June 30, 2018 and 2017:
To determine the expected term of the Company’s employee stock options granted, the Company utilized the simplified approach as defined by SEC Staff Accounting Bulletin No. 107, “Share-Based Payment” (“SAB 107”). To determine the risk-free interest rate, the Company utilized an average interest rate based on U.S. Treasury instruments with a term consistent with the expected term of the Company’s stock-based awards. To determine the expected stock price volatility for the Company’s stock-based awards, the Company utilized the historical volatility of the Company’s common stock. The fair value of all the Company’s stock-based awards assumes no dividends as the Company does not anticipate paying cash dividends on its common stock.
Employee Stock-based Compensation Expense
As required by ASC 718, the Company recognized $922,000 and $1.6 million of stock-based compensation expense related to stock options under the Company’s equity incentive plans for the three and six months ended June 30, 2018, respectively, and $25,000 and $52,000 for the three and six months ended June 30, 2017, respectively.
As of June 30, 2018, the total unrecognized compensation cost related to unvested stock-based awards granted to employees under the Company’s equity incentive plans was approximately $16.0 million. This cost will be recorded as compensation expense on a ratable basis over the remaining weighted average requisite service period of approximately 3.4 years.
Equity Incentive Plans
The Company’s equity incentive plans include the 2009 Stock Plan, the 2014 Equity Incentive Plan and the 2018 Equity Incentive Plan. No additional shares will be issued under the 2009 Stock Plan and the 2014 Equity Incentive Plan.
The following table summarizes stock option activity under the Company’s equity incentive plans:
The total intrinsic value of stock options exercised during the three and six months ended June 30, 2018, was $30,000 and $1.6 million, respectively, as determined at the date of the option exercise. Cash received from stock option exercises was $8,000 and $156,000 for the three and six months ended June 30, 2018, respectively. No stock options were exercised during the three and six months ended June 30, 2017. The Company issues new shares of common stock upon exercise of options. In connection with these exercises, there was no tax benefit realized by the Company due to the Company’s current loss position.
The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.
Reference 1: http://www.xbrl.org/2003/role/presentationRef