Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2024		2023
General and administrative	$	1,316	$	1,952
Research and development	445		737
Total	$	1,761	$	2,689

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	2,632,054	0.70			5
Exercised	(101,426)	0.42			44
Forfeited	(590,947)	3.63			79
Options outstanding at March 31, 2024	15,100,909	$	2.05	8.00	$	6,191
Options exercisable at March 31, 2024	8,711,464	$	2.56	7.15	$	1,771

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	(940,972)	$	1.92
Forfeited	(54,320)	$	1.64
RSUs outstanding at March 31, 2024	2,027,107	$	1.48

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	615,467	1.27
Vested	—	—
Forfeited	—	—
PSUs outstanding at March 31, 2024	615,467	$	1.27