Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 523,506	$ 123,406
Marketable securities	669,116	625,282
Accounts receivable ($0.3 million and $0.1 million from related party)	3,768	2,031
Prepaid expenses and other current assets	20,407	18,584
Total current assets	1,216,797	769,303
Marketable securities - noncurrent	69,338	337,361
Property and equipment, net	27,921	20,968
Operating lease right-of-use assets	133,076	79,143
Equity method investment	32,455	58,131
Investments and other assets	40,527	29,558
Total Assets	1,520,114	1,294,464
Current Liabilities:
Accounts payable	5,154	9,653
Accrued expenses ($1.6 million and $0 million due to related party)	60,876	43,309
Current portion of operating lease liability	16,685	9,112
Current portion of deferred revenue ($19.9 million and $34.2 million from related party)	43,839	63,759
Total current liabilities	126,554	125,833
Deferred revenue, net of current portion ($0 million and $19.9 million from related party)	19,932	63,476
Long-term operating lease liability	114,018	64,911
Contingent consideration liability	24,026	0
Commitments and contingencies (Note 8)
Stockholders’ Equity:
Common stock, $0.0001 par value; 120,000,000 shares authorized; 87,103,007 and 74,485,883 shares issued and outstanding at December 31, 2022 and 2021, respectively	9	7
Additional paid-in capital	2,420,223	1,745,870
Accumulated other comprehensive income	(7,461)	(2,632)
Accumulated deficit	(1,177,187)	(703,001)
Total stockholders’ equity	1,235,584	1,040,244
Total Liabilities and Stockholders’ Equity	$ 1,520,114	$ 1,294,464