Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Summary of Non-cash, Share-based Compensation Expense

For the three months ended March 31, 2024 and 2023, the Company recognized the following non-cash, share-based compensation expense in the statements of operations (in thousands):

	Three Months Ended March 31,
	2024		2023
General and administrative	$	114	$	163
Research and development		—		41
Total	$	114	$	204

Summary of Stock Option Activities

Stock option transactions for the three months ended March 31, 2024 under the Company’s stock incentive plans were as follows:

	Options Outstanding
	Number of Options			Weighted Average  Exercise Price		Weighted Average Remaining Contractual Term  (in years)
Options outstanding - December 31, 2023		616,707		$	4.76		7.35
Granted		42,000			1.64
Exercised		—			—
Forfeited and cancelled		(12,862	)		17.45
Options outstanding - March 31, 2024		645,845		$	4.30		6.82
Options exercisable - March 31, 2024		502,517		$	4.71		6.55
Options vested and expected to vest -        March 31, 2024		645,816		$	4.30		6.82