Supplemental Balance Sheet Information

9 Months Ended

Sep. 30, 2023

Supplemental Balance Sheet Information [Abstract]

10.

Supplemental Balance Sheet Information

Inventories

Inventories consisted of the following as of each period end:


	September 30,		December 31,
	2023		2022
	(in thousands)
Raw Materials	$	2,422	$	1,214
Work-in-process		4,169		372
Total inventories	$	6,591	$	1,586

Property and equipment, net

Property and equipment consisted of the following as of each period end:


	September 30,			December 31,
	2023			2022
	(in thousands)
Leasehold improvements	$	904		$	875
Lab equipment		15,361			14,797
Machinery and equipment		572			572
Computer equipment and software		1,279			1,149
Furniture and fixtures		1,258			1,297
Construction in progress		239			32
Property and equipment, gross		19,613			18,722
Less: accumulated depreciation		(14,985	)		(12,422	)
Property and equipment, net	$	4,628		$	6,300

Depreciation expense was $0.9 million and $1.1 million for the three months ended September 30, 2023 and 2022, respectively, and $2.8 million and $3.8 million for the nine months ended September 30, 2023 and 2022, respectively.

Other current liabilities

Other current liabilities consisted of the following as of each period end:


	September 30,		December 31,
	2023		2022
	(in thousands)
Accrued operating expenses	$	8,299	$	7,435
Current portion of operating lease liabilities		12,409		12,806
Current portion of finance lease liabilities		887		834
Interest payable		763		—
Other accrued liabilities		211		319
Total other current liabilities	$	22,569	$	21,394