Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 145,647	$ 123,554
Marketable securities	400,576	516,598
Prepaid expenses and other current assets	8,463	11,143
Total current assets	554,686	651,295
Restricted cash	284	280
Marketable securities, non-current	16,506	70,117
Other investments	32,001	44,924
Property and equipment, net	102,654	123,023
Operating lease right-of-use assets	39,663	43,242
Other non-current assets	4,235	4,680
Total assets	750,029	937,561
Current liabilities:
Accounts payable	4,817	3,917
Accrued liabilities and other current liabilities	28,126	28,755
Success payment liabilities	1,576	4,356
Total current liabilities	34,519	37,028
Operating lease liabilities, non-current	56,894	63,168
Other non-current liabilities	3,664	4,113
Total liabilities	95,077	104,309
Commitments and contingencies (Note 16)
Stockholders’ equity:
Preferred stock, $0.0001 par value; 10,000 shares authorized at December 31, 2023 and 2022, respectively; no shares issued and outstanding at December 31, 2023 and 2022	0	0
Common stock, $0.0001 par value; 500,000 shares authorized at December 31, 2023 and 2022, respectively; 253,958 and 249,567 shares issued and outstanding at December 31, 2023 and 2022, respectively	25	25
Additional paid-in capital	1,657,133	1,608,306
Accumulated other comprehensive loss	(94)	(7,599)
Accumulated deficit	(1,002,112)	(767,480)
Total stockholders’ equity	654,952	833,252
Total liabilities and stockholders’ equity	$ 750,029	$ 937,561
Common stock authorized (in shares)	500,000,000	500,000,000
Preferred stock authorized (in shares)	10,000,000	10,000,000