Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Stock-Based Compensation [Abstract]

Schedule of Restricted Stock Unit Activity

The following table summarizes restricted stock unit, or RSU, activities for the three months ended March 31, 2024:

	Restricted Stock Units			Weighted Average Grant Date Fair Value
Non-vested as of December 31, 2023		236,679		$	7.07
Granted		210,700			1.91
Forfeited		-			-
Vested		(104,484	)		10.57
Non-vested as of March 31, 2024		342,895		$	2.84

Schedule of Stock Option Activities

The following table summarizes stock option activities for the three months ended March 31, 2024:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value (1)
Outstanding as of December 31, 2023		2,900,205		$	9.50		8.03	$	20
Granted		1,102,300			1.91		-		-
Exercised		-			-		-		-
Forfeited		-			-		-		-
Expired		(627	)		3.20		-		-
Outstanding as of March 31, 2024		4,001,878		$	7.41		7.45	$	3,675
Vested and expected to vest at March 31, 2024		4,001,878		$	7.41		7.45	$	3,675
Exercisable as of March 31, 2024		1,648,715			12.90		6.71		429

(1) Aggregate intrinsic value represents the difference between the exercise price of the option and the closing market price of our common stock on December 31, 2023 and March 31, 2024, respectively. The intrinsic value of options exercised during the period ended March 31, 2024 was $0 and no options were exercised.

Schedule of Total Stock-Based Compensation Costs

The following tables summarize total stock-based compensation costs recognized:

	For the Three Months Ended March 31,
	2024		2023
Restricted stock units	$	151	$	314
Stock options		1,075		1,261
Total	$	1,226	$	1,575

Schedule of Stock-Based Compensation Expense

Stock-based compensation expense was reflected within the condensed consolidated statements of operations and comprehensive loss as:

	For the Three Months Ended March 31,
	2024		2023
Research and development	$	374	$	400
General and administrative		852		1,175
Total	$	1,226	$	1,575