Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 79,023	$ 232,813
Short-term investments	372,167	167,261
Accounts receivable, net	3,341	2,495
Related party receivables	843	1,283
Other receivables	998	366
Inventory	6,838	4,145
Prepaid expenses and other current assets	3,547	3,336
Total current assets	466,757	411,699
Long-term investments	4,915	93,186
Operating lease right-of-use assets	27,958	20,142
Property and equipment, net	15,350	13,087
Restricted cash	524	524
Other assets	796	501
Total assets	516,300	539,139
Current liabilities:
Accounts payable	4,141	3,789
Accrued expenses	9,142	8,394
Deferred revenue	429	376
Operating lease liabilities, current	1,115	864
Other current liabilities	197	0
Total current liabilities	15,024	13,423
Operating lease liabilities, net of current portion	28,910	22,459
Other noncurrent liabilities	323	341
Total liabilities	44,257	36,223
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock, $0.00001 par value; 5,000,000 shares authorized as of June 30, 2022 and December 31, 2021; zero shares issued and outstanding as of June 30, 2022 and December 31, 2021	0	0
Additional paid-in capital	648,146	629,981
Accumulated other comprehensive loss	(3,113)	(536)
Accumulated deficit	(172,991)	(126,530)
Total stockholders’ equity	472,043	502,916
Total liabilities and stockholders’ equity	516,300	539,139
Class A common stock
Stockholders’ equity:
Common stock	1	1
Class B common stock
Stockholders’ equity:
Common stock	$ 0	$ 0