Stock-Based Compensation and Warrants (Tables)

12 Months Ended

Dec. 31, 2020

Stock-Based Compensation and Warrants

Schedule of assumptions used for awards

	Year ended December 31,
	2020			2019
Exercise price	$	0.42		$	0.42
Expected dividends		0	%		0	%
Expected volatility		88	%		84	%
Risk free interest rate		0.31	%		1.61	%
Expected life of option (years)		4.3			4.5

Summary of stock option activity

A summary of stock option activity for the years ended December 31, 2020 and 2019 is as follows:

		Weighted		Weighted Average	Aggregate
		Average Exercise		Remaining	Intrinsic
	Options	Price		Contractual Life	Value
Balance - December 31, 2018	938,982	$	15.18	6.19 years	$	—
Granted	1,725,000		0.42
Exercised	—		—
Expired	(94,738)		58.25
Forfeited	(67,232)		5.95
Balance - December 31, 2019	2,502,012		3.62	6.51 years		153,353
Granted	1,540,000		0.42
Exercised	—		—
Expired	(14,944)		17.57
Forfeited	(29,650)		0.55
Balance -December 31, 2020 - outstanding	3,997,418	$	2.35	6.09 years	$	—
Balance -  December 31, 2020 - exercisable	1,319,412	$	6.25	4.35 years	$	—
Grant date fair value of options granted - December 31, 2020		$	412,000
Weighted average grant date fair value - December 31, 2020		$	0.27
Grant date fair value of options granted - December 31, 2019		$	470,000
Weighted average grant date fair value - December 31, 2019		$	0.27

Schedule of options outstanding and exercisable

The options outstanding and exercisable at December 31, 2020 are as follows:

Options Outstanding						Options Exercisable
					Weighted				Weighted
			Weighted		Average		Weighted		Average
			Average		Remaining		Average		Remaining
Range of			Exercise		Contractual		Exercise		Contractual
Exercise Price		Options	Price		Life	Options	Price		Life
$	0.00 – $40.00	3,929,257	$	0.99	4.42 years	1,251,251	$	2.18	4.42 years
	41.00 – $70.00	8,364		50.29	2.53 years	8,364		50.29	2.53 years
$	71.00 – $102.00	59,797	$	85.19	3.13 years	59,797	$	85.19	3.13 years

Summary of all warrant activity

A summary of all warrant activity for the Company for the years ended December 31, 2020 and 2019 is as follows:

	Number of	Weighted Average
	Warrants	Exercise Price
Balance at December 31,2018	18,915,851	$	3.85
Granted	—		—
Exercised	—		—
Forfeited	(200,852)		61.25
Balance at December 31,2019	18,714,999		3.24
Granted	—		—
Exercised	—		—
Forfeited	(714,286)		50.05
Balance at December 31,2020	18,000,713	$	0.69

Summary of all outstanding and exercisable warrants

A summary of all outstanding and exercisable warrants as of December 31, 2020 is as follows:

				Weighted Average
		Warrants	Warrants	Remaining
Exercise Price		Outstanding	Exercisable	Contractual Life
$	0.69	17,999,999	17,999,999	2.78 years
	18.20	714	714	1.99 years
$	0.69	18,000,713	18,000,713	2.78 years