Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Summary of Restricted Stock Activity

A summary of the Company’s restricted stock activity and related information is as follows:

	Number of Shares of Restricted Stock Awards			Weighted Average Grant Date Fair Value
Unvested as of December 31, 2021		12,537		$	24.79
Vested		(4,573	)		22.89
Canceled/Forfeited		(18	)		15.37
Unvested as of March 31, 2022		7,946		$	25.91

Summary of Restricted Stock Unit Activity

A summary of the Company’s restricted stock unit activity and related information is as follows:

	Number of Shares of Restricted Stock Units			Weighted Average Grant Date Fair Value
Unvested as of December 31, 2021		—		$	—
Granted		313,185			3.50
Vested		—			—
Canceled/Forfeited		(375	)		3.50
Unvested as of March 31, 2022		312,810		$	3.50

Summary of Stock Option Activity

A summary of the Company’s stock option activity and related information is as follows:

	Number of Stock Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
						(In years)		(In thousands)
Outstanding as of December 31, 2021		3,037,463		$	5.34		8.9	$	629
Granted		790,100			3.53
Exercised		—			—
Cancelled/forfeited		(55,720	)		8.05
Outstanding as of March 31, 2022		3,771,843		$	4.92		8.8	$	—
Exercisable as of March 31, 2022		1,280,246		$	4.96		8.5	$	—
Vested and expected to vest as of March 31, 2022		3,771,843		$	4.92		8.8	$	—

Schedule of Components and Classification of Stock-Based Compensation Expense

The following table presents the components and classification of stock-based compensation expense (in thousands):

	Three Months Ended March 31,
	2022		2021
Research and development	$	384	$	271
General and administrative		458		375
Total stock-based compensation expense	$	842	$	646