Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2022

Summary of Significant Accounting Policies

Schedule of company’s revenue disaggregated by category and source

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
	(in thousands)				(in thousands)
Commercial	$	488	$	190	$	2,970	$	395
Government contracts		7		65		24		321
Equipment sales		8		21		129		27
Total revenue	$	503	$	276	$	3,123	$	743

Schedule of stock-based compensation included in cost of goods sold, research and development, and selling, general and administrative expenses

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
	(in thousands)				(in thousands)
Cost of goods sold	$	531	$	81	$	1,714	$	134
Research and development		1,415		136		4,715		409
Selling, general and administrative		4,689		128		14,164		490
Total stock-based compensation expense	$	6,635	$	345	$	20,593	$	1,033

Schedule of diluted weighted average shares

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
	(in thousands, except per share amounts)
Numerator
Net loss	$	18,730		$	32,421		$	27,614		$	98,465
Less: cumulative change in redemption value of preferred units		—			—			—			13,831
Net loss attributable to common stockholders	$	18,730		$	32,421		$	27,614		$	112,296
Denominator
Weighted average shares – basic and diluted		101,397			7,352			98,513			7,348
Basic and diluted loss per share	$	(0.18	)	$	(4.41	)	$	(0.28	)	$	(15.28	)

Schedule of anti-dilutive unvested restricted stock units

	Three Months Ended September 30,			Nine Months Ended September 30,
Antidilutive Shares Excluded		2022	2021	2022		2021
	(in thousands)			(in thousands)
Warrants		18,750	17,667		18,750		17,667
Stock Options		2,374	2,049		2,374		2,049
Unvested Restricted Stock Units		3,294	94		3,294		94
Unvested Restricted Stock Awards		1,262	—		1,262		—
Preferred units		—	47,652		—		47,652