Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 115,412	$ 64,330
Marketable securities	439,396	296,112
Collaboration receivable	1,012	0
Prepaid expenses and other current assets	7,339	6,686
Total current assets	563,159	367,128
Property and equipment, net	18,778	7,224
Restricted cash	4,824	5,237
Operating lease right-of-use assets	91,877	1,839
Other long term assets	585	2,696
Total assets	679,223	384,124
Current liabilities:
Accounts payable	2,424	7,077
Accrued expenses	20,767	12,992
Operating lease obligations, current portion	11,904	1,955
Total current liabilities	35,095	22,024
Long-term lease liability	70,014	0
Deferred revenue, non-current	20,014
Success payment liability	2,885	4,371
Other long term liabilities	283	377
Total liabilities	128,291	26,772
Commitments and contingencies (See Note 7 and 8)
Convertible preferred stock (See Note 10)	0	0
Stockholders’ equtiy (deficit):
Preferred stock, $0.001 par value; 5,000,000 shares authorized, no shares issued and oustanding	0	0
Common stock, $0.001 par value; 200,000,000 and 255,000,000 shares authorized at December 31, 2022 and 2021, respectively, 61,730,816 and 48,511,735 shares issued at December 31, 2022 and 2021, respectively; 61,730,816 and 48,511,735 shares outstanding at December 31, 2022 and 2021, respectively	62	49
Additional paid-in capital	895,801	544,381
Accumulated other comprehensive (loss) income	(694)	(228)
Accumulated deficit	(344,237)	(186,850)
Total stockholders’ equity (deficit)	550,932	357,352
Total liabilities, and stockholders' equity	$ 679,223	$ 384,124