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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 112,777 $ 56,845
Restricted cash 365 364
Marketable securities 267,964 115,901
Interest and other receivables 1,596 3,144
Prepaid and other current assets 4,321 3,992
Total current assets 387,023 180,246
Noncurrent marketable securities 28,100  
Property and equipment, net 1,066 793
Operating leases, right-of-use assets 3,995 4,147
Deposits and other assets 4,693 5,389
Total assets 424,877 190,575
Current liabilities:    
Accounts payable 3,383 10,190
Accrued compensation and benefits 4,906 11,534
Operating lease liabilities 931 925
Debt   20,945
Accrued liabilities 34,691 33,100
Total current liabilities 43,911 76,694
Noncurrent operating lease liabilities 3,512 3,671
Noncurrent debt 51,399 30,212
Commitments and contingencies
Stockholders' equity:    
Common stock 509 390
Additional paid-in capital 1,777,470 1,493,469
Accumulated deficit (1,451,764) (1,413,642)
Accumulated other comprehensive loss (160) (219)
Total stockholders' equity 326,055 79,998
Total liabilities and stockholders' equity $ 424,877 $ 190,575