CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 60,827	$ 119,801
Marketable securities	75,240	87,668
Prepaid expenses	4,891	4,836
Other current assets	1,771	2,094
Total current assets	142,729	214,399
Restricted cash equivalents	2,413	2,413
Property and equipment, net	12,963	6,853
Operating lease right-of-use assets	45,390	15,670
Other assets	2,878	3,255
Total assets	206,373	242,590
Current liabilities:
Accounts payable	824	1,545
Accrued liabilities	6,288	6,335
Operating lease liabilities	3,757	1,839
Other current liabilities	233	434
Total current liabilities	11,102	10,153
Long-term liabilities:
Operating lease liabilities—non-current	36,537	16,174
Total liabilities	47,639	26,327
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized as of September 30, 2022 and December 31, 2021; 0 shares issued and outstanding as of September 30, 2022 and December 31, 2021
Common stock, $0.0001 par value; 400,000,000 shares authorized as of September 30, 2022 and December 31, 2021; 38,503,966 and 37,375,428 shares issued and 38,393,211 and 37,174,741 outstanding as of September 30, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	358,215	346,382
Accumulated other comprehensive loss	(1,178)
Accumulated deficit	(198,307)	(130,123)
Total stockholders' equity	158,734	216,263
Total liabilities and stockholders' equity	$ 206,373	$ 242,590