Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 141,194	$ 123,406
Marketable securities	687,000	625,282
Accounts receivable ($0 million and $0.1 million, respectively, from related party)	4,023	2,031
Prepaid expenses and other current assets	26,730	18,584
Total current assets	858,947	769,303
Marketable securities - noncurrent	20,533	337,361
Property and equipment, net	26,597	20,968
Operating lease right-of-use assets	101,290	79,143
Equity method investment	40,102	58,131
Investments and other assets	36,989	29,558
Total Assets	1,084,458	1,294,464
Current Liabilities:
Accounts payable	4,384	9,653
Accrued expenses ($1.0 million and $0 million, respectively, from related party)	58,379	43,309
Current portion of operating lease liability	13,551	9,112
Current portion of deferred revenue ($28.5 million and $34.2 million, respectively, from related party)	54,818	63,759
Total current liabilities	131,132	125,833
Deferred revenue, net of current portion ($0 million and $19.9 million, respectively, from related party)	25,678	63,476
Long-term operating lease liability	84,097	64,911
Contingent consideration liability	18,600	0
Commitments and contingencies (Note 6)
Stockholders’ Equity:
Common stock, $0.0001 par value; 120,000,000 shares authorized; 76,587,947 and 74,485,883 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	8	7
Additional paid-in capital	1,898,091	1,745,870
Accumulated other comprehensive loss	(9,368)	(2,632)
Accumulated deficit	(1,063,780)	(703,001)
Total stockholders’ equity	824,951	1,040,244
Total Liabilities and Stockholders’ Equity	$ 1,084,458	$ 1,294,464