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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 199,826 $ 294,233
Marketable securities 1,193,813 1,448,063
Prepaid expenses and other current assets 53,017 39,841
Collaboration receivable - related party 18,448 18,506
Total current assets 1,465,104 1,800,643
Property and equipment, net 2,821 3,016
Restricted cash 1,269 1,269
Right-of-use operating asset 11,970 16,109
Other long-term assets 4,909 4,251
Total assets 1,486,073 1,825,288
Current liabilities:    
Accounts payable 7,077 10,450
Accrued expenses 85,007 67,275
Operating lease liability, current portion 7,603 7,468
Total current liabilities 99,687 85,193
Operating lease liability, net of current portion 6,164 10,964
Other liabilities 100 100
Total liabilities 105,951 96,257
Commitments and contingencies (Note 5)
Stockholders’ equity:    
Preferred stock, $0.0001 par value per share; 5,000,000 shares authorized at September 30, 2022 and December 31, 2021; no shares issued or outstanding at September 30, 2022 and December 31, 2021
Common stock, $0.0001 par value per share; 120,000,000 shares authorized at September 30, 2022 and December 31, 2021; 59,496,737 and 58,940,083 shares issued at September 30, 2022 and December 31, 2021; 59,493,704 and 58,937,050 shares outstanding at September 30, 2022 and December 31, 2021 6 6
Treasury stock, at cost, 3,033 shares at September 30, 2022 and December 31, 2021 (400) (400)
Additional paid-in capital 3,276,423 3,227,471
Accumulated deficit (1,881,024) (1,495,386)
Accumulated other comprehensive loss (14,883) (2,660)
Total stockholders’ equity 1,380,122 1,729,031
Total liabilities and stockholders’ equity $ 1,486,073 $ 1,825,288