Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expense

Stock-based compensation expense for stock options, RSUs and PSUs is reflected in the condensed consolidated statements of operations and comprehensive loss as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2024		2023		2024		2023
General and administrative	$	1,333	$	1,987	$	2,649	$	3,939
Research and development	565		645		1,010		1,382
Total	$	1,898	$	2,632	$	3,659	$	5,321

Schedule of Stock Option Activity

The following table summarizes the Company's stock option activity:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (In Thousands)
Options outstanding at December 31, 2023	13,161,228	$	2.38	7.86	$	337
Granted	3,661,636	0.93			49
Exercised	(168,083)	0.65			91
Forfeited	(657,130)	3.79			80
Options outstanding at June 30, 2024	15,997,651	$	2.01	7.87	$	5,536
Options exercisable at June 30, 2024	9,576,154	$	2.39	7.08	$	2,483

Schedule of RSU Activity

The following table summarizes the Company's RSU activity:

	Number of Shares	Weighted Average Grant Date Fair Value
RSUs outstanding at December 31, 2023	2,982,661	$	1.63
Granted	39,738	$	0.51
Vested	(983,511)	$	1.92
Forfeited	(54,320)	$	1.64
RSUs outstanding at June 30, 2024	1,984,568	$	1.47

Schedule of PSU Activity

The following table summarizes the PSU activity:

	Number of Shares	Weighted Average Grant-Date Fair Value
PSUs outstanding at December 31, 2023	—	$	—
Granted	872,352	$	1.71
Vested	—	$	—
Forfeited	—	$	—
PSUs outstanding at June 30, 2024	872,352	$	1.71