Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Restricted Stock Units Activity

The Company’s RSU activity for the year ended December 31, 2021 and 2020 was as follows:

				Weighted
				Average
				Grant Date
	Number			Fair Value
	of Shares			per Share
Nonvested at January 1, 2020		—		$	—
Replacement restricted units granted		2,518,932			5.25
Restricted units granted		331,121			14.90
Vested		—			—
Nonvested at December 31, 2020		2,850,053			6.37
Restricted units granted		—			—
Vested		(712,510	)		6.37
Cancelled or forfeited		(250,778	)		5.25
Nonvested at December 31, 2021		1,886,765		$	6.52

Schedule of Restricted Stock Awards Activity

The Company’s RSA activity for the year ended December 31, 2021 and 2020 was as follows:

				Weighted
				Average
				Grant Date
	Number			Fair Value
	of Shares			per Share
Nonvested at December 31, 2019		—		$	—
Restricted stock granted		769,058			5.28
Vested		—			—
Nonvested at December 31, 2020		769,058		$	5.28
Restricted stock granted		—			—
Vested		(427,083	)		5.28
Nonvested at December 31, 2021		341,975		$	5.28

Schedule of Total Remaining Stock-Based Compensation Expense for Stock Options, RSAs and RSUs (Detail)

The following table summarizes the total remaining stock-based compensation expense for the stock options, RSAs and RSUs recorded in the consolidated statements of operations for the years ended December 31, 2021 and 2020 (in thousands):

	For the Year Ended December 31,
	2021		2020
Research and development expense	$	8,286	$	1,167
General and administrative expense		9,898		2,187
Total	$	18,184	$	3,354

Cancelled Options

Schedule of Assumptions Used to Estimate Fair Value of Stock Options and Cancelled Options

The following assumptions were used to estimate the fair value of the Cancelled Options that were granted on July 1, 2020:

Risk-free interest rate	0.31	%
Expected dividend yield	—
Expected term in years	6.3
Expected volatility	80	%

Stock Options

Schedule of Assumptions Used to Estimate Fair Value of Stock Options and Cancelled Options

The following weighted-average assumptions were used to estimate the fair value of stock options, excluding the Cancelled Options, for the years ended December 31, 2021 and 2020:

	Year Ended December 31,
	2021			2020
Risk-free interest rate		0.84	%		0.54	%
Expected dividend yield		—			—
Expected term in years		6.0			6.2
Expected volatility		75	%		77	%

Schedule of Stock Option Activity

The following table summarizes stock option activity during the year ended December 31, 2021:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Stock			Exercise		Contractual		Value
	Options			Price		Life (in years)		(in thousands)
Outstanding at December 31, 2019		—		$	—		—	$	—
Options granted		674,842			20.68
Outstanding at December 31, 2020		674,842		$	20.68		9.8	$	3,953
Options granted		3,192,600			24.99
Options cancelled or forfeited		(217,480	)		26.07
Outstanding at December 31, 2021		3,649,962		$	24.13		9.2	$	—
Options exercisable at December 31, 2021		243,722		$	21.30		8.7	$	—