CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 62,952	$ 119,801
Marketable securities	88,136	87,668
Prepaid expenses	5,467	4,836
Other current assets	2,288	2,094
Total current assets	158,843	214,399
Restricted cash equivalents	2,413	2,413
Property and equipment, net	14,832	6,853
Operating lease right-of-use assets	46,142	15,670
Other assets	2,385	3,255
Total assets	224,615	242,590
Current liabilities:
Accounts payable	1,268	1,545
Accrued liabilities	6,286	6,335
Operating lease liabilities	4,429	1,839
Other current liabilities	279	434
Total current liabilities	12,262	10,153
Long-term liabilities:
Operating lease liabilities—non-current	37,379	16,174
Total liabilities	49,641	26,327
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized as of June 30, 2022 and December 31, 2021; 0 shares issued and outstanding as of June 30, 2022 and December 31, 2021
Common stock, $0.0001 par value; 400,000,000 shares authorized as of June 30, 2022 and December 31, 2021; 37,644,288 and 37,375,428 shares issued and 37,506,236 and 37,174,741 outstanding as of June 30, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	350,815	346,382
Accumulated other comprehensive loss	(1,326)
Accumulated deficit	(174,519)	(130,123)
Total stockholders' equity	174,974	216,263
Total liabilities and stockholders' equity	$ 224,615	$ 242,590