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Statements of Stockholders' Equity - USD ($)
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2018 $ 43,159 $ 405,972,075 $ (200,550,739) $ 205,464,495
Balance, shares at Dec. 31, 2018 43,160,751      
Exercise of options and vesting of restricted stock units $ 306 412,607   412,913
Exercise of options and vesting of restricted stock units, shares 306,182      
Stock-based compensation   6,215,090   6,215,090
Net loss     (57,891,911) (57,891,911)
Balance at Dec. 31, 2019 $ 43,465 412,599,772 (258,442,650) 154,200,587
Balance, shares at Dec. 31, 2019 43,466,933      
Issuance of common stock, net of issuance costs $ 5,163 17,819,554   17,824,717
Issuance of common stock, net of issuance costs, shares 5,161,502      
Exercise of options and vesting of restricted stock units $ 390 318,907   319,297
Exercise of options and vesting of restricted stock units, shares 389,187      
Stock-based compensation   6,901,758   6,901,758
Net loss     (51,026,903) (51,026,903)
Balance at Dec. 31, 2020 $ 49,018 437,639,991 (309,469,553) 128,219,456
Balance, shares at Dec. 31, 2020 49,017,622      
Issuance of common stock, net of issuance costs $ 3,092 10,696,225   10,699,317
Issuance of common stock, net of issuance costs, shares 3,092,603      
Exercise of options and vesting of restricted stock units $ 204 24,825   25,029
Exercise of options and vesting of restricted stock units, shares 203,669      
Stock-based compensation   6,087,286   6,087,286
Net loss     (63,427,437) (63,427,437)
Balance at Dec. 31, 2021 $ 52,314 $ 454,448,327 $ (372,896,990) $ 81,603,651
Balance, shares at Dec. 31, 2021 52,313,894