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STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

SCHEDULE OF WEIGHTED-AVERAGE ASSUMPTIONS TO ESTIMATE THE FAIR VALUE OF THE OPTIONS GRANTED

We used the following weighted-average assumptions to estimate the grant date fair value of the stock options granted for the years indicated:

 SCHEDULE OF WEIGHTED-AVERAGE ASSUMPTIONS TO ESTIMATE THE FAIR VALUE OF THE OPTIONS GRANTED

		For the years ended December 31,
		2020				2019
Expected volatility			110	%			108	%
Expected term			6.2 years				5.1 years
Risk-free interest rate			0.30	%			2.21	%
Expected dividend yield			0.00	%			0.00	%

2015 Equity Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

SCHEDULE OF OPTIONS ACTIVITY

Summarized stock option information for the 2015 Equity Incentive Plan is as follows:

 SCHEDULE OF OPTIONS ACTIVITY

		Options				Weighted- average exercise  price
Outstanding options at January 1, 2019			5,525,405			$	8.08
Granted, fair value of $5.14 per share			1,490,490			$	6.53
Exercised			(303,129	)			3.20
Expired/forfeited			(917,371	)			7.95
Outstanding options at December 31, 2019			5,795,395			$	7.96
Outstanding options at January 01, 2020			5,795,395				7.96
Granted, fair value of $1.88 per share			2,645,146			$	2.26
Exercised			(77,560	)			2.28
Expired/forfeited			(2,802,242	)			6.52
Outstanding options at December 31, 2020			5,560,739			$	2.21
Non-vested options at December 31, 2019			2,342,706			$	8.78
Non-vested options at December 31, 2020			2,507,203			$	1.29

SCHEDULE OF OPTIONS OUTSTANDING AND EXERCISABLE

Further information regarding options outstanding under the 2015 Equity Incentive Plan as of December 31, 2020 is summarized below:

 SCHEDULE OF OPTIONS OUTSTANDING AND EXERCISABLE

												Weighted-average												Weighted-average
Range of exercise prices								Number of options outstanding				Remaining life in years				Exercise price				Number of options exercisable				Remaining life in years				Exercise price
$	1.02			$	1.28				4,562,630				7.8			$	1.20				2,077,915				6.3			$	1.23
	2.31				2.59				161,642				1.4				2.31				161,642				1.4				2.31
	4.38				4.78				357,925				3.2				4.43				357,925				3.2				4.43
	6.59				7.42				298,865				2.6				7.33				298,865				2.6				7.33
	8.54				13.65				66,567				6.5				13.26				47,817				6.3				13.10
	14.45				16.02				113,110				1.1				15.96				109,372				1.0				15.96
									5,560,739												3,053,536

SUMMARY OF RESTRICTED STOCK ACTIVITY

Restricted Common Stock: Summarized stock option information for the 2015 Equity Incentive Plan is as follows:

 SUMMARY OF RESTRICTED STOCK ACTIVITY

		Restricted common stock awards				Weighted- average grant date fair value
Outstanding awards at January 1, 2019			-			$	-
Granted			376,625			$	3.14
Vested			-				-
Forfeited			(22,000	)			3.14
Outstanding awards at December 31, 2019			354,625			$	3.14
Outstanding awards at January 01, 2020			354,625				3.14
Granted			5,290,312			$	1.75
Vested			(817,054	)			2.26
Forfeited			(1,875,384	)			1.75
Outstanding awards at December 31, 2020			2,952,499			$	1.78

2005 Equity Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

SCHEDULE OF OPTIONS ACTIVITY

Summarized information for the 2005 Equity Incentive Plan is as follows:

 SCHEDULE OF OPTIONS ACTIVITY

		Options				Weighted- average exercise price
Outstanding options at January 1, 2019			316,400			$	14.15
Expired/forfeited			(56,400	)			19.75
Outstanding options at December 31, 2019			260,000			$	12.94
Outstanding options at January 01, 2020			260,000				12.94
Expired/forfeited			(135,200	)			6.80
Outstanding options at December 31, 2020			124,800			$	8.55

SCHEDULE OF OPTIONS OUTSTANDING AND EXERCISABLE

Further information regarding options outstanding under the 2005 Equity Incentive Plan as of December 31, 2020 is summarized below:

 SCHEDULE OF OPTIONS OUTSTANDING AND EXERCISABLE

												Weighted-average												Weighted-average
Range of exercise prices								Number of options outstanding				Remaining life in years				Exercise price				Number of options exercisable				Remaining life in years				Exercise price
$	1.28			$	1.28				80,000				3.2			$	1.28				80,000				3.2			$	1.28
	11.50				18.50				42,000				2.4				18.17				42,000				2.4				18.17
	30.50				113.50				2,800				0.6				72.00				2,800				0.6				72.00
									124,800												124,800

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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