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BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 15,896 $ 30,605
Marketable securities 214,610 171,123
Prepaid expenses and other current assets 4,410 2,652
Total current assets 234,916 204,380
Restricted cash 4,044 4,044
Property and equipment, net 6,618 4,908
Right-of-use asset 464 1,792
Prepaid expenses and other non-current assets 12,469 5,376
Total assets 258,511 220,500
Current liabilities:    
Accounts payable 5,170 6,777
Accrued expenses and other current liabilities 11,248 13,093
Operating lease liability 475 1,832
Total current liabilities 16,893 21,702
Other liabilities 3,361 3,361
Total liabilities 20,254 25,063
Commitments (Note 8)
Stockholders’ equity:    
Additional paid-in capital 662,172 531,682
Accumulated other comprehensive (loss) (605) (1,692)
Accumulated deficit (423,315) (334,558)
Total stockholders’ equity 238,257 195,437
Total liabilities and stockholders’ equity 258,511 220,500
Voting Common Stock    
Stockholders’ equity:    
Common stock 4 4
Non-voting Common Stock    
Stockholders’ equity:    
Common stock $ 1 $ 1