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Consolidated Statements of Stockholders' Equity - USD ($)
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning balance at Dec. 31, 2020 $ 113,792,909 $ 3,737 $ 392,585,265 $ (278,796,093)
Balance (in shares) at Dec. 31, 2020   37,374,088    
Stock-based compensation 3,731,097   3,731,097  
Issuance of common stock upon exercise of options 1,913,299 $ 10 1,913,289  
Issuance of common stock upon exercise of options (in shares)   94,000    
Issuance of common stock upon vesting of RSUs   $ 0    
Issuance of common stock upon vesting of RSUs (in shares)   1,917    
Issuance of common stock upon financing 6,115,864 $ 9 6,115,855  
Issuance of common stock upon financing (in shares)   93,877    
Net loss (29,259,970)     (29,259,970)
Ending balance at Mar. 31, 2021 96,293,199 $ 3,756 404,345,506 (308,056,063)
Balance (in shares) at Mar. 31, 2021   37,563,882    
Beginning balance at Dec. 31, 2021 $ 15,630,352 $ 3,782 424,825,655 (409,199,085)
Balance (in shares) at Dec. 31, 2021 37,816,794 37,816,794    
Stock-based compensation $ 7,598,329   7,598,329  
Issuance of common stock upon exercise of options $ 181,637 $ 2 181,635  
Issuance of common stock upon exercise of options (in shares) 18,015 18,015    
Issuance of common stock upon vesting of RSUs   $ 0    
Issuance of common stock upon vesting of RSUs (in shares)   4,555    
Issuance of common stock upon financing $ 31,008,601 $ 104 31,008,497  
Issuance of common stock upon financing (in shares)   1,044,081    
Shares tendered for withholding taxes (88,594) $ 0 (88,594)  
Net loss (39,632,311)     (39,632,311)
Ending balance at Mar. 31, 2022 $ 14,698,014 $ 3,888 $ 463,525,522 $ (448,831,396)
Balance (in shares) at Mar. 31, 2022 38,883,445 38,883,445