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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 21,666 $ 44,347
Short-term investments   2,504
Accounts and other receivables 5,000 1,818
Prepaid and other current assets 1,540 2,807
Total current assets 28,206 51,476
Other assets, noncurrent 168 472
Right-of-use assets 66 2,744
Property and equipment, net 4 970
Total assets 28,444 55,662
Current liabilities:    
Accounts payable 194 6,419
Accrued compensation 2,582 1,467
Deferred revenue   230
Other accrued liabilities 1,452 4,072
Dividends payable 7,558  
CVR derivative liability 5,000  
Operating lease liability 38 1,977
Total current liabilities 16,824 14,165
Operating lease liability, noncurrent   408
Total liabilities 16,824 14,573
Commitments and Contingencies (Note 8)
Stockholders’ equity (deficit):    
Common stock, $0.001 par value, 100,000,000 shares authorized; 37,756,574 and 31,409,707 shares issued and outstanding at December 31, 2022 and 2021, respectively 37 31
Additional paid-in capital 389,210 443,752
Accumulated deficit (410,936) (402,694)
Total stockholders’ equity (deficit) (21,689) 41,089
Total liabilities, redeemable convertible preferred stock and stockholders’ equity (deficit) 28,444 $ 55,662
Redeemable Convertible Preferred Stock    
Current liabilities:    
Redeemable convertible preferred stock, $0.001 par value, 123,418 shares authorized; 12,340 shares issued and outstanding as of December 31, 2022 and no shares issued and outstanding as of December 31, 2021 $ 33,309