CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 119,801	$ 48,539
Investments	87,668
Prepaid expenses	4,836	467
Other current assets	2,094	100
Total current assets	214,399	49,106
Restricted cash equivalents	2,413	1,559
Property and equipment, net	6,853	4,728
Operating lease right-of-use assets	15,670	17,117
Other assets	3,255	3,398
Total assets	242,590	75,908
Current liabilities:
Accounts payable	1,545	2,361
Accrued expenses	6,335	6,260
Operating lease liability	1,839	863
Other current liabilities	434	723
Total current liabilities	10,153	10,207
Long-term liabilities:
Operating lease liabilities—non-current	16,174	17,430
Total liabilities	26,327	27,637
Redeemable convertible preferred stock		107,336
Stockholders’ equity (deficit):
Preferred stock, $0.0001 par value; 10,000,000 and 0 shares authorized as of December 31, 2021 and December 31, 2020, respectively; 0 shares issued and outstanding as of December 31, 2021 and December 31, 2020
Common stock, $0.0001 par value; 400,000,000 and 420,000,000 shares authorized as of December 31, 2021 and December 31, 2020, respectively; 37,375,428 and 893,231 shares issued and 37,174,741 and 505,074 outstanding as of December 31, 2021 and December 31, 2020, respectively	4	1
Additional paid-in capital	346,382	2,158
Accumulated deficit	(130,123)	(61,224)
Total stockholders' equity (deficit)	216,263	(59,065)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$ 242,590	75,908
Series A-1 Redeemable Convertible Preferred Stock
Long-term liabilities:
Redeemable convertible preferred stock		2
Series A-2 Redeemable Convertible Preferred Stock
Long-term liabilities:
Redeemable convertible preferred stock		42,786
Series B Redeemable Convertible Preferred Stock
Long-term liabilities:
Redeemable convertible preferred stock		$ 64,548