Stock Incentive Plans

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Stock Incentive Plans

Note 7 - Stock Incentive Plans

Stock Options

The following table summarizes stock option activity for the six months ended June 30, 2019:

	Options Outstanding
	Shares			Weighted Average Exercise Price
Outstanding, December 31, 2018		5,613,057		$	0.83
Options granted		1,635,000			0.37
Options expired / forfeited		(2,255,250	)		1.03
Outstanding, June 30, 2019		4,992,807			0.77
Exercisable, June 30, 2019		2,186,414		$	0.81

The following table summarizes additional information on stock options outstanding at June 30, 2019.

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted- Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$0.28 - $1.00		4,352,000		8.85	$	0.57		2,024,500	$	0.66
$1.50 - $1.80		493,207		8.18	$	1.79		134,314	$	1.78
$2.60 - $10.70		147,600		2.79	$	3.43		27,600	$	7.27
Totals		4,992,807		8.60	$	0.77		2,186,414	$	0.81

Weighted-Average Exercisable Remaining Contractual Life (Years) 8.06

During the six months ended June 30, 2019, the Company granted an aggregate of 1,635,000 stock options to employees.

Total expense related to stock options was approximately $241,000 and $374,000 for the three months ended June 30, 2019 and 2018, respectively and approximately $636,000 and $493,000 for the six months ended June 30, 2019 and 2018, respectively.

As of June 30, 2019, the Company had approximately $474,000 of total unrecognized compensation expense related to unvested stock options.

As of June 30, 2019, the intrinsic value of options outstanding was zero.