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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 6,781 $ 9,195
Restricted cash 0 1,501
Marketable securities 141,825 141,161
Prepaid expenses and other current assets 6,320 8,902
Total current assets 154,926 160,759
Property, plant and equipment, net 133,130 138,684
Operating lease right-of-use assets 1,707 2,387
Long-term investments 3,972 23,161
Other long-term assets 581 639
Total assets 294,316 325,630
Current liabilities:    
Accounts payable 1,217 1,212
Accrued expenses and other current liabilities 9,072 9,347
Total current liabilities 10,289 10,559
Contingent consideration, net of current portion 5,054 4,858
Operating lease liabilities, non-current 2,020 2,877
Loan payable 81,926 81,427
Other long-term liabilities 8 80
Total liabilities 99,297 99,801
Commitments and contingencies (Note 6)
Stockholders’ equity:    
Preferred stock, par value $0.000001 per share; 10,000,000 shares authorized; zero shares issued and outstanding as of June 30, 2024, and December 31, 2023 0 0
Common stock, par value $0.000001 per share; 300,000,000 shares authorized; 6,503,913 shares issued and outstanding as of June 30, 2024, and December 31, 2023 0 0
Additional paid-in capital 815,846 807,158
Accumulated other comprehensive loss (627) (348)
Accumulated deficit (620,200) (580,981)
Total stockholders’ equity 195,019 225,829
Total liabilities and stockholders’ equity $ 294,316 $ 325,630