Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 176,765	$ 253,029
Marketable securities	247,198	297,967
Restricted cash	6,100
Prepaid expenses and other current assets	14,374	7,105
Total current assets	444,437	558,101
Long-term marketable securities	10,051	195,881
Property and equipment, net	66,917	65,464
Operating lease right-of-use assets	92,486	96,320
Long-term restricted cash	4,408	8,819
Intangible asset	59,195	59,195
Goodwill	140,627	140,627
Other non-current assets	4,599	5,000
TOTAL ASSETS	822,720	1,129,407
Current liabilities:
Accounts payable	2,857	2,219
Accrued compensation	26,362	21,131
Accrued expenses and other current liabilities	14,547	10,344
Operating lease liabilities	12,393	9,159
Contingent consideration	55,345	51,382
Success payment liabilities		5,000
Total current liabilities	111,504	99,235
Operating lease liabilities, net of current portion	95,860	101,784
Contingent consideration, net of current portion	95,034	102,361
Success payment liabilities, net of current portion	21,007	97,525
Total liabilities	323,405	400,905
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock, $0.0001 par value; 50,000 shares authorized; zero shares issued and outstanding as of December 31, 2022 and 2021, respectively
Common stock, $0.0001 par value; 750,000 shares authorized; 191,022 and 184,929 shares issued and outstanding as of December 31, 2022 and 2021, respectively	19	18
Additional paid-in capital	1,558,459	1,515,210
Accumulated other comprehensive loss	(4,327)	(1,366)
Accumulated deficit	(1,054,836)	(785,360)
Total stockholders' equity	499,315	728,502
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 822,720	$ 1,129,407