Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2025

Summary of Significant Accounting Policies

Schedule of company’s revenue disaggregated by category and source

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
	(in thousands)				(in thousands)
Commercial	$	1,016	$	1,100	$	1,948	$	2,141
Government contracts		186		5		793		10
Total revenue	$	1,202	$	1,105	$	2,741	$	2,151

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
		(in thousands)				(in thousands)
Cost of goods sold	$	156	$	109	$	393	$	183
Research and development		1,160		1,132		2,203		2,640
Selling, general and administrative		2,334		2,410		5,378		5,073
Total stock-based compensation expense	$	3,650	$	3,651	$	7,974	$	7,896

Schedule of diluted weighted average shares

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
	(in thousands, except per share amounts)				(in thousands, except per share amounts)
Numerator
Net loss attributable to common stockholders	$	(63,195)	$	(24,390)	$	(121,774)	$	(56,000)
Denominator
Weighted average shares – basic and diluted		132,318		115,210		131,509		119,359
Basic and diluted loss per share	$	(0.48)	$	(0.21)	$	(0.93)	$	(0.47)

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

	Three Months Ended June 30,				Six Months Ended June 30,
Antidilutive Shares Excluded	2025		2024		2025		2024
	(in thousands)				(in thousands)
Warrants		37,267		34,529		37,267		34,529
Stock Options		4,244		4,484		4,244		4,484
Unvested Restricted Stock Units		4,082		5,539		4,082		5,539
Unvested Restricted Stock Awards		220		231		220		231
2028 Notes Convertible Stock		15,127		—		15,127		—

Schedule of goodwill activities

	Six Months Ended June 30,
	2025		2024
	(in thousands)
Beginning Balance	$	16,966	$	17,977
Changes in foreign exchange rates		2,128		(527)
Ending Balance	$	19,094	$	17,450