Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Summary of Significant Accounting Policies

Schedule of company’s revenue disaggregated by category and source

	Three Months Ended March 31,
	2024		2023
	(in thousands)
Commercial	$	1,041	$	825
Government contracts		5		5
Total revenue	$	1,046	$	830

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

	Three Months Ended March 31,
	2024		2023
	(in thousands)
Cost of goods sold	$	73	$	538
Research and development		1,508		1,600
Selling, general and administrative		2,663		1,728
Total stock-based compensation expense	$	4,244	$	3,866

Schedule of diluted weighted average shares

	Three Months Ended March 31,
	2024			2023
	(in thousands, except per share amounts)
Numerator
Net loss attributable to common stockholders	$	(31,610	)	$	(16,349	)
Denominator
Weighted average shares – basic and diluted		111,061			106,405
Basic and diluted loss per share	$	(0.28	)	$	(0.15	)

Schedule of anti-dilutive unvested restricted stock units and unvested restricted stock awards

	Three Months Ended March 31,
Antidilutive Shares Excluded	2024		2023
	(in thousands)
Warrants		44,268		18,750
Stock Options		4,702		3,740
Unvested Restricted Stock Units		5,844		3,949
Unvested Restricted Stock Awards		345		208

Schedule of goodwill activities

	Three Months Ended March 31,
	2024			2023
	(in thousands)
Beginning Balance	$	17,977		$	17,493
Changes in foreign exchange rates		(396	)		328
Ending Balance	$	17,581		$	17,821