Stockholders Deficit (Tables)

6 Months Ended

Jun. 30, 2018

A summary of the Company’s stock option activity for the six months ended June 30, 2018 is as follows:

	Number of Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Balance at December 31, 2017		1,517,771		$	2.97		7.5	$	67,242
Granted		272,500			3.38
Exercised		(33,651	)		2.07			$	51,816
Forfeited		(23,190	)		3.60
Expired/Cancelled		(39,855	)		6.83
Balance at June 30, 2018		1,693,575		$	2.95		7.4	$	1,262,339
Exercisable at June 30, 2018		1,163,017		$	2.89		6.6	$	1,061,522

Summary of Restricted Stock Unit (“RSU”) Plans Activity

A summary of restricted stock unit (“RSU”) activity for the six months ended June 30, 2018 is as follows:

	Number of Shares			Weighted- Average Grant Date Fair Value Per Share
Balance at December 31, 2017		26,666		$	2.78
Granted		269,551			3.82
Vested		(269,551	)		3.76
Balance at June 30, 2018		26,666		$	3.34

Summary of Stock-Based Compensation

Stock-based compensation expense recorded in the accompanying interim unaudited condensed statements of operations for the three and six months ended June 30, 2018 and 2017 was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Selling, general and administrative	$	173,666	$	294,591	$	1,275,658	$	574,174
Research and development		49,189		93,103		80,098		181,464
Cost of revenue		19,065		30,243		29,622		58,945
	$	241,920	$	417,937	$	1,385,378	$	814,583