Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 47,285	$ 40,753
Short-term investments	138,612	195,657
Other receivables	1,370	1,853
Inventory	7,795	7,436
Prepaid expenses and other current assets	1,890	3,248
Total current assets	201,534	253,323
Long-term investments	54,686	63,103
Operating lease right-of-use assets	20,488	22,791
Property and equipment, net	14,754	18,575
Restricted cash	524	524
Other assets	4,097	8,281
Total assets	296,083	366,597
Current liabilities:
Accounts payable	5,611	4,621
Accrued expenses	7,135	7,937
Deferred revenue	341	408
Operating lease liabilities, current	2,575	2,312
Other current liabilities	29	50
Total current liabilities	15,691	15,328
Operating lease liabilities, net of current portion	21,077	23,652
Other noncurrent liabilities	8	48
Total liabilities	36,776	39,028
Commitments and contingencies (Note 10)
Stockholders’ equity:
Preferred stock, $0.00001 par value; 5,000,000 shares authorized as of December 31, 2025 and 2024; zero shares issued and outstanding as of December 31, 2025 and 2024	0	0
Additional paid-in capital	724,819	719,804
Accumulated other comprehensive gain	459	136
Accumulated deficit	(465,972)	(392,372)
Total stockholders’ equity	259,307	327,569
Total liabilities and stockholders’ equity	296,083	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	4,282	3,997
Related Party
Current assets:
Accounts receivable, net	$ 300	$ 379