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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2021

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

SCHEDULE OF STOCK BASED COMPENSATION

Stock Options: The following table summarizes stock option-based compensation for the three and six months ended June 30, 2021 and 2020:

 SCHEDULE OF STOCK BASED COMPENSATION

		For the three months ended June 30,								For the six months ended June 30,
		2021				2020				2021				2020
Research and development		$	608,000			$	871,000			$	1,217,000			$	1,615,000
General and administrative			719,000				707,000				1,193,000				1,219,000
Stock option-based compensation expense included in operating expense		$	1,327,000			$	1,578,000			$	2,410,000			$	2,834,000

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

We used the following weighted-average assumptions to estimate the fair value of the options granted for the periods indicated:

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

		For the three months ended June 30,								For the six months ended June 30,
		2021				2020				2021				2020
Expected volatility			97	%			111	%			98	%			111	%
Expected term			5.67 years				6.25 years				5.93 years				6.25 years
Risk-free interest rate			0.96	%			0.23	%			0.99	%			0.30	%
Expected dividend yield			0	%			0	%			0	%			0	%

SCHEDULE OF OPTIONS ACTIVITY

The following table summarizes the options granted for the periods indicated:

 SCHEDULE OF OPTIONS ACTIVITY

		For the three months ended June 30,								For the six months ended June 30,
		2021				2020				2021				2020
Options granted			1,205,808				1,897,119				3,355,308				3,073,046
Weighted-average:
Exercise price		$	1.60			$	2.83			$	2.05			$	2.30
Grant date fair value		$	1.22			$	2.36			$	1.59			$	1.92

SUMMARY OF RESTRICTED COMMON STOCK

The following table summarizes the restricted common stock granted for the periods indicated:

 SUMMARY OF RESTRICTED COMMON STOCK

		For the three months ended June 30,								For the six months ended June 30,
		2021				2020				2021				2020
Restricted common stock granted			926,484				1,083,313				1,975,734				1,083,313
Restricted common stock forfeited			(220,136	)			-				(428,659	)			-
Weighted-average:
Grant date fair value-granted awards		$	1.60			$	3.19			$	1.97			$	3.19
Grant date fair value-forfeited awards		$	2.05			$	-			$	1.89			$	-

Restricted Stock [Member]

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

SCHEDULE OF STOCK BASED COMPENSATION

Restricted Common Stock: The following table summarizes restricted common stock compensation expense for the three and six months ended June 30, 2021 and 2020:

 SCHEDULE OF STOCK BASED COMPENSATION

		For the three months ended June 30,								For the six months ended June 30,
		2021				2020				2021				2020
Research and development		$	484,000			$	147,000			$	1,030,000			$	472,000
General and administrative			617,000				40,000				938,000				179,000
Restricted stock-based compensation expense included in operating expense		$	1,101,000			$	187,000			$	1,968,000			$	651,000

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