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Statements of Stockholders' Equity - USD ($)
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
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      
Exercise of options $ 116 129,856   129,972
Exercise of options, shares 116,046      
Stock-based compensation   1,822,148   1,822,148
Net loss     (7,662,604) (7,662,604)
Balance at Mar. 31, 2020 $ 43,581 414,551,776 (266,105,254) 148,490,103
Balance, shares at Mar. 31, 2020 43,582,979      
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 $ 2,517 9,557,182   9,559,699
Issuance of common stock, net of issuance costs, shares 2,517,603      
Exercise of options $ 4 4,235   4,239
Exercise of options, shares 3,785      
Stock-based compensation   1,614,185   1,614,185
Net loss     (14,274,059) (14,274,059)
Balance at Mar. 31, 2021 $ 51,539 $ 448,815,593 $ (323,743,612) $ 125,123,520
Balance, shares at Mar. 31, 2021 51,539,010