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Balance Sheets (unaudited) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 4,043 $ 3,880
Marketable securities 42,193 45,199
Accounts receivable 34 160
Other receivables 19 11,310
Prepaid expenses and other current assets 1,311 795
Total current assets 47,600 61,344
Property and equipment, net 1,239 1,999
Long-term marketable securities 21,973 30,841
Intangible assets, net 1,026 0
Other assets 737 1,257
Total assets 72,575 95,441
Current liabilities:    
Accounts payable 1,969 1,046
Accrued and other current liabilities 2,384 2,722
Finance lease obligation, current portion 194 440
Deferred revenue 20,223 20,235
Total current liabilities 24,770 24,443
Finance lease obligation, net of current portion 2 196
Operating lease obligation, net of current portion 0 644
Total liabilities 24,772 25,283
Commitments and Contingencies
Stockholders' equity:    
Common stock, $0.0001 par value; 150,000,000 Class A shares authorized; 33,206,909 and 30,736,513 Class A shares issued and outstanding as of December 31, 2024 and 2023, respectively; 1,500,000 Class B shares authorized; 967,759 and 1,405,259 Class B shares issued as of December 31, 2024 and 2023, respectively; 967,759 Class B shares outstanding as of December 31, 2024 and 2023. 3 3
Additional paid-in capital 327,534 317,066
Accumulated other comprehensive loss 60 (15)
Accumulated deficit (279,794) (246,896)
Total stockholders' equity 47,803 70,158
Total liabilities and stockholders' equity $ 72,575 $ 95,441