STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of stock option activity

The following table summarizes the stock option activity for the periods indicated as follows:

	Number of Options		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (years)
Outstanding as of December 31, 2022	280,810		$	17.00	3.9
Granted	—		—		—
Exercised	—		—		—
Forfeited	(326)		—		—
Expired	(36)		—		—
Outstanding as of March 31, 2023	280,448	(1)	17.11		4.4
Exercisable as of March 31, 2023	98,406		32.22		—

(1) - Includes options related to 99,000 shares that are inducement awards and not granted under the 2018 Plan.

Schedule of restricted stock unit activity

The following table summarizes restricted stock unit activity for the three months ended March 31, 2023:

	Number of Units	Weighted Average Grant-Date Fair Value Per Unit
Outstanding as of December 31, 2022	18,799	$	2.71
Granted	—	—
Vested	(18,799)	2.71
Forfeited	—	—
Outstanding as of March 31, 2023	—	—

Schedule of stock-based compensation expense

The stock-based compensation expense was recorded as follows (in thousands):

	Three Months Ended March 31,
	2023		2022
Research and development	$	4	$	1
Selling, general and administrative	162		223
Total stock-based compensation expense	$	166	$	224