Stock/Equity-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Restricted Stock Unit Activity and Related Information

The following table summarizes the Company’s RSU activity for the six months ended June 30, 2022:

	RSUs			Weighted Average Grant Date Fair Value
Unvested balance at December 31, 2021		86,225		$	17.89
Issued	-			$	—
Vested		(17,624	)	$	17.89
Forfeited		(20,429	)	$	17.89
Unvested balance at June 30, 2022		48,172		$	17.89

Summary of Restricted Stock Awards Activity

The following table summarizes the Company's RSA activity for the three and six months ended June 30, 2022:

	RSAs			Weighted Average Grant Date Fair Value
Unvested balance at December 31, 2021		305,663		$	3.83
Issued	-			$	—
Vested		(189,778	)	$	3.83
Forfeited		(35,725	)	$	3.83
Unvested balance at June 30, 2022		80,160		$	3.83

Summary of Stock Option Activity

The following table summarizes the Company’s option activity during six months ended June 30, 2022:

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
						(in years)		(in thousands)
Outstanding as of December 31, 2021		1,779,174		$	18.99		7.67		—
Granted		17,000		$	2.89				—
Exercised		—			—				—
Forfeited		(573,490	)	$	31.47				—
Outstanding as of June 30, 2022		1,222,684		$	11.99		7.82		—
Vested and expected to vest as of June 30, 2022		1,222,684		$	11.99		7.82		—

Summary of Stock-based Compensation Expense, Including Shares Issued to Consultants for Services

The Company recorded stock/equity-based compensation expense related to common stock options and restricted stock units and restricted stock awards in the following expense categories in its condensed consolidated statements of operations (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Research and development expenses	$	89	$	355	$	190	$	746
General and administrative expenses		983		904		2,086		1,920
	$	1,072	$	1,259	$	2,276	$	2,666