Stock-based compensation |
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Dec. 31, 2015 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stock-based compensation |
Stock-based compensation:
In October 2013, the board of directors approved the 2013 Employee, Director and Consultant Equity Incentive Plan (the “2013 Plan”) pursuant to which the Company may issue options, warrants, restricted stock or other stock-based awards to directors, officers, key employees and other key individuals performing services for the Company. The 2013 Plan has reserved 4,773,992 shares of common stock for issuance. All awards will be approved by the board of directors or a committee of the board of directors to be established for such purpose.
The Company’s outstanding stock options have maximum contractual terms of up to ten years, principally vest on a quarterly basis ratably over five years and were granted at exercise prices equal to the market price of the Company’s common stock on the date of grant. The Company’s outstanding stock options are exercisable into shares of the Company’s common stock. The Company measures the cost of employee services received in exchange for an award of equity instruments, including grants of employee stock options and restricted stock awards, based on the fair value of the award at the date of grant. The Company uses the Black-Scholes model for purposes of determining the fair value of stock options granted and recognizes compensation costs ratably over the requisite service period, net of estimated forfeitures. For restricted stock awards, the grant-date fair value is the quoted market price of the stock.
In October 2013, in connection with their employment agreements, Messrs. Segal and Goldfinger were granted options to purchase 1,022,104 and 511,052, shares, respectively, of common stock at an exercise price of $5.00 per share. Of these options, 50% vest over time and 50% will vest based on the achievement of targeted annual milestones which have been set by the board of directors.
On February 27, 2016 in connection with the expiration of the Company's warrants Messrs. Segal and Goldfinger forfeited 228,088 and 114,044, respectively, of their options granted to them.
There were no options granted during 2015. During 2014, the Company granted the following options:
For the years ended December 31, 2015 and 2014 the Company recognized $811,658 and $538,954 of non-cash stock-based compensation expense in general and administrative expense in the consolidated statements of operations and comprehensive income (loss). Included in stock based compensation for the year ended December 31, 2015 is $160,000 of unrestricted stock granted to directors which immediately vested in May 2015.
As of December 31, 2015 and 2014, there was approximately $1.9 million and $4.6 million of total unrecognized compensation cost related to unvested share-based compensation grants, which is expected to be amortized over a weighted-average period of 4.47 years.
The fair value of each option grant is estimated on the date of grant using the Black-Scholes model with the following weighted-average assumptions:
A summary of the status of stock option awards and changes during the year ended December 31, 2015 are presented below:
The weighted-average grant-date fair value of option awards outstanding at December 31, 2015 and 2014 was $1.86 and $1.88, respectively. The fair value of options vested at December 31, 2015 and 2014 was $918,424 and $266,769, respectively.
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