Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 44,973	$ 40,753
Short-term investments	154,262	195,657
Other receivables	1,355	1,853
Inventory	8,126	7,436
Prepaid expenses and other current assets	1,845	3,248
Total current assets	214,363	253,323
Long-term investments	51,950	63,103
Operating lease right-of-use assets	21,077	22,791
Property and equipment, net	15,474	18,575
Restricted cash	524	524
Other assets	5,220	8,281
Total assets	308,608	366,597
Current liabilities:
Accounts payable	4,261	4,621
Accrued expenses	7,770	7,937
Deferred revenue	486	408
Operating lease liabilities, current	2,507	2,312
Other current liabilities	18	50
Total current liabilities	15,042	15,328
Operating lease liabilities, net of current portion	21,742	23,652
Other noncurrent liabilities	10	48
Total liabilities	36,794	39,028
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.00001 par value; 5,000,000 shares authorized as of September 30, 2025 and December 31, 2024; zero shares issued and outstanding as of September 30, 2025 and December 31, 2024	0	0
Additional paid-in capital	721,360	719,804
Accumulated other comprehensive gain	431	136
Accumulated deficit	(449,978)	(392,372)
Total stockholders’ equity	271,814	327,569
Total liabilities and stockholders’ equity	308,608	366,597
Class A common stock
Stockholders’ equity:
Common stock	1	1
Class B common stock
Stockholders’ equity:
Common stock	0	0
Nonrelated Party
Current assets:
Accounts receivable, net	3,502	3,997
Related Party
Current assets:
Accounts receivable, net	$ 300	$ 379