Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Equity [Abstract]

Summary of Share-Based Compensation Expense

the expense related to Earn-Out Service Providers, is classified in the consolidated statements of operations and comprehensive loss as follows:

	Year Ended December 31,
	2023		2022
Research and development	$	2,526	$	3,493
Selling, general and administrative		4,281		5,816
Total	$	6,807	$	9,309

Summary of Stock Option Activity and Related Information

	Number of Options			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Balance at December 31, 2022		12,190,970		$	3.98		7.36
Granted		5,199,280		$	0.86
Cancelled		(2,769,719	)	$	3.58
Exercised		(28,778	)	$	0.03
Balance at December 31, 2023		14,591,753		$	2.94		7.31	$	285
Exercisable December 31, 2023		7,593,913		$	3.71		5.53	$	99
Options vested and expected to vest, December 31, 2023		14,591,753		$	2.94		7.31	$	285

Summary of Stock Option Activity Weighted-Average Assumptions

The fair value of all option activity was estimated at the date of grant using a Black-Scholes model with the following weighted-average assumptions for the years ended December 31, 2023 and 2022:

	Year Ended December 31,
	2023			2022
Fair value of Common Stock	$	0.86		$	5.03
Expected volatility		104.32	%		99.19	%
Expected term (in years)		5.92			5.93
Risk-free interest rate		4.10	%		3.34	%
Expected dividend yield		0.00	%		0.00	%

Summary of RSUs Activity

The following table summarizes RSU activity for the year ended December 31, 2023:

	Number of RSUs	Weighted- Average Grant Date Fair Value
Balance at December 31, 2022	801,401	$2.30
Granted	3,121,125	$0.82
Vested	(321,739)	$2.08
Forfeited	(601,950)	$1.74
Balance at December 31, 2023	2,998,837	$0.89

Summary of PSUs activity

The following table summarizes PSU activity for the year ended December 31, 2023:

	Number of PSUs	Weighted- Average Grant Date Fair Value
Balance at December 31, 2022	4,554,408	$1.50
Granted	—	n/a
Vested	—	n/a
Forfeited	(2,526,274)	$1.50
Balance at December 31, 2023	2,028,134	$1.50