SHARE-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Valuation Assumptions

The following principal inputs were used in the valuation of awards issued for the six months ended June 30, 2023 and 2022:

	Six Months Ended June 30,
	2023	2022
Expected volatility	88.8%	83.4%
Expected term (years)	5.5-6.5	5.5-6.5
Risk-free interest rate	3.4%	3.3%
Expected dividend yield	0%	0%
Value of underlying share	$0.36	$0.31

Schedule of Stock Option Activity

Detail of the number of stock options outstanding for the six months ended June 30, 2023 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- Average Exercise Price per Option		Weighted- Average Remaining Contract Term (in years)	Aggregate Intrinsic Value
Outstanding as of December 31, 2022	3,957,027	$	1.52	8.37	$	46,800
Granted	3,748,671	0.38
Exercised	—	—
Forfeited (and expired)	(692,991)	2.28
Outstanding as of June 30, 2023	7,012,707	$	0.83	8.99	$	—
Exercisable/vested as of June 30, 2023	2,554,000	$	1.21	7.53	$	—

Schedule of Restricted Stock

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, 2022	2,569,574	$	0.98
Granted	1,249,548	$	0.38
Forfeited	(299,370)	$	1.42
Vested	(690,092)	$	1.26
Shares withheld upon vesting	(152,198)	$	0.85
Outstanding as of June 30, 2023	2,677,462	$	0.67