Stock-Based Compensation

3 Months Ended

Mar. 31, 2023

Stock-Based Compensation [Abstract]

Stock-Based Compensation

8. Stock-Based Compensation

A summary of stock option activity for the three months ended March 31, 2023 under all the Company’s options plans is as follows:

	Options			Weighted Average Exercise Price
Outstanding at January 1, 2023		7,472,056		$	4.23
Granted		-		$	-
Exercised		-		$	-
Cancelled (expired)		(294,451	)	$	6.43
Outstanding at March 31, 2023		7,177,605		$	4.14

 The Company recorded stock-based compensation expense in the Condensed Consolidated Statements of Operations as follows (in thousands): 

	Three Months Ended March 31,
	2023		2022
General and administrative	$	1,105	$	1,294
Research and development		117		249
Total stock-based compensation	$	1,222	$	1,543

At March 31, 2023, the Company had $4.7 million of total unrecognized stock-based compensation expense, net of estimated forfeitures, related to outstanding stock options that will be recognized over a weighted-average period of 1.3 years. As of March 31, 2023, there were 2,061,764 shares available for grant under the Company’s 2020 Equity Incentive Plan.