Balance Sheet Components

6 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

5. Balance Sheet Components

Inventories

Inventories consist of the following (in thousands):


	June 30, 2022		December 31, 2021
Raw materials	$	5,425	$	10,616
Work-in-process	$	57,753		45,662
Finished goods	$	2,638		1,924
Total inventories	$	65,816	$	58,202

We have capitalized $400,000 and $408,000 of stock-based compensation expense to our inventories for the three months ended June 30, 2022, and 2021, respectively; and $733,000 and $838,000 for the six months ended June 30, 2022 and 2021, respectively. The depreciation expense capitalized into inventories are not material for the three- and six-months ended June 30, 2022 and 2021. See Note 9—Stock-based Compensation for details on stock-based compensation expenses recognized during the three- and six-months ended June 30, 2022, and 2021.

Property and Equipment

Property and equipment consists of the following (in thousands):


	June 30, 2022			December 31, 2021
Laboratory equipment	$	15,041		$	14,373
Computer equipment		2,850			2,841
Leasehold improvements		32,281			32,281
Construction-in-progress		257			934
Total property and equipment		50,429			50,429
Less: accumulated depreciation and amortization		(18,004	)		(15,511	)
Property and equipment, net	$	32,425		$	34,918

Accrued liabilities

Accrued liabilities consist of the following (in thousands):


	June 30, 2022		December 31, 2021
Accrued research and development costs	$	11,184	$	8,525
Accrued manufacturing costs		13,599		11,327
Accrued professional and consulting services		12,134		7,863
Accrued sales deductions		14,956		10,205
Other		1,393		1,377
Total accrued liabilities	$	53,266	$	39,297

Other liabilities, current

Other liabilities consist of the following (in thousands):


	June 30, 2022		December 31, 2021
Operating lease liabilities, current	$	6,119	$	5,670
Other current liabilities	$	260		222
Total other liabilities, current	$	6,379	$	5,892