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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Loss [Member]
Accumulated Deficit [Member]
Beginning Balance, Values at Dec. 31, 2021 $ 231,909 $ 39 $ 528,365 $ (180) $ (296,315)
Beginning Balance, Shares at Dec. 31, 2021   38,560,854      
Stock-based compensation 4,252   4,252    
Exercise of stock options 19   19    
Exercise of stock options, Shares   2,711      
Foreign currency translation adjustment 3     3  
Unrealized gain (loss) on available-for-sale securities (196)     (196)  
Net loss (35,373)       (35,373)
Ending Balance, Values at Mar. 31, 2022 200,614 $ 39 532,636 (373) (331,688)
Ending Balance, Shares at Mar. 31, 2022   38,563,565      
Beginning Balance, Values at Dec. 31, 2022 231,194 $ 48 669,780 (372) (438,262)
Beginning Balance, Shares at Dec. 31, 2022   47,722,995      
Stock-based compensation 4,607   4,607    
Exercise of stock options $ 111   111    
Exercise of stock options, Shares 55,605 55,605      
Exercise of pre-funded warrants, Value   $ 3 (3)    
Exercise Of Pre-funded Warrants Shares   2,582,557      
Issuance of common stock to a related party, net of issuance costs, Value $ 17,470 $ 2 17,468    
Issuance of common stock to a related party, net of issuance costs, Shares   2,646,458      
Restricted stock vested in the period   73,058      
Foreign currency translation adjustment (5)     (5)  
Unrealized gain (loss) on available-for-sale securities 160     160  
Net loss (38,676)       (38,676)
Ending Balance, Values at Mar. 31, 2023 $ 214,861 $ 53 $ 691,963 $ (217) $ (476,938)
Ending Balance, Shares at Mar. 31, 2023   53,080,673