SHARE-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Inputs used in valuation of awards

The following principal inputs were used in the valuation of awards issued for the nine months ended September 30, 2022 and 2021:

	Nine Months Ended September 30,
	2022	2021
Expected volatility	85.8%	82.5%
Expected term (years)	6.0	6.0
Risk-free interest rate	3.3%	1.3%
Expected dividend yield	0%	0%
Value of underlying share	$0.43	$2.18

Detail of the number of stock options outstanding

Detail of the number of stock options outstanding for the three months ended September 30, 2022 under the Company's 2015 legacy option plan and the Company's amended 2018 long term incentive plan (collectively, the "Plans") is as follows:

	Number of Options	Weighted- Avg. Exercise Price per Option		Weighted- Avg. Remaining Contract Term (in years)	Aggregate Intrinsic Value
Outstanding as of December 31, 2021	3,343,883	$	3.16	7.54	$	1,039,229
Granted	3,813,579	1.11
Exercised	—	—
Forfeited (and expired)	(2,532,201)	3.32
Outstanding as of September 30, 2022	4,625,261	$	1.41	8.78	$	170,184
Exercisable/vested as of September 30, 2022	1,579,296	$	1.59	6.16	$	14,184

Details of the number of restricted share awards outstanding

Details of the number of restricted share units outstanding under the 2018 Plan is as follows:

	Number of Shares	Weighted- Average Grant Date Fair Value
Outstanding as of December 31, 2021	1,816,851	$	2.28
Granted	3,380,777	$	0.91
Forfeited	(1,748,387)	$	1.85
Vested	(440,863)	$	2.00
Shares withheld upon vesting	(164,908)	$	1.58
Outstanding as of September 30, 2022	2,843,470	$	0.99