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Consolidated Statements of Stockholders' Equity - USD ($)
Total
Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Balance, shares at Jun. 30, 2020   4,030 229,258,400    
Balance, amount at Jun. 30, 2020 $ 80,172,849 $ 40 $ 2,292,584 $ 396,079,127 $ (318,198,902)
Stock-based compensation, shares     958,090    
Stock-based compensation, amount 2,459,162   $ 9,581 2,449,581  
Withholding taxes related to restricted stock units, shares     (166,799)    
Withholding taxes related to restricted stock units, amount (93,638)   $ (1,668) (91,970)  
Net loss (19,662,211) $ 0 $ 0 0 (19,662,211)
Balance, shares at Mar. 31, 2021   4,030 230,049,691    
Balance, amount at Mar. 31, 2021 62,876,162 $ 40 $ 2,300,497 398,436,738 (337,861,113)
Balance, shares at Dec. 31, 2020   4,030 230,034,307    
Balance, amount at Dec. 31, 2020 67,835,126 $ 40 $ 2,300,343 397,666,196 (332,131,453)
Stock-based compensation, shares     21,875    
Stock-based compensation, amount 775,305   $ 219 775,086  
Withholding taxes related to restricted stock units, shares     (6,491)    
Withholding taxes related to restricted stock units, amount (4,609)   $ (65) (4,544)  
Net loss (5,729,660)       (5,729,660)
Balance, shares at Mar. 31, 2021   4,030 230,049,691    
Balance, amount at Mar. 31, 2021 62,876,162 $ 40 $ 2,300,497 398,436,738 (337,861,113)
Balance, shares at Jun. 30, 2021   4,030 230,049,691    
Balance, amount at Jun. 30, 2021 49,651,372 $ 40 $ 2,300,497 399,146,232 (351,795,397)
Stock-based compensation, shares     1,735,158    
Stock-based compensation, amount 1,789,947 0 $ 17,352 1,772,595 0
Withholding taxes related to restricted stock units, shares     (404,779)    
Withholding taxes related to restricted stock units, amount (221,311) 0 $ (4,048) (217,263) 0
Net loss $ (23,430,681) 0 $ 0 0 (23,430,681)
Warrant exercises, shares 43,600   350,000    
Warrant exercises, amount $ 280,000 0 $ 3,500 276,500 0
Option exercises, shares     43,600    
Option exercises, amount 16,132 $ 0 $ 436 15,696 0
Balance, shares at Mar. 31, 2022   4,030 231,773,670    
Balance, amount at Mar. 31, 2022 28,085,459 $ 40 $ 2,317,737 400,993,760 (375,226,078)
Balance, shares at Dec. 31, 2021   4,030 231,695,273    
Balance, amount at Dec. 31, 2021 35,196,307 $ 40 $ 2,316,953 400,473,806 (367,594,492)
Stock-based compensation, shares     111,000    
Stock-based compensation, amount 533,779 0 $ 1,110 532,669 0
Withholding taxes related to restricted stock units, shares     (32,603)    
Withholding taxes related to restricted stock units, amount (13,041) 0 $ (326) (12,715) 0
Net loss (7,631,586) $ 0 $ 0 0 (7,631,586)
Balance, shares at Mar. 31, 2022   4,030 231,773,670    
Balance, amount at Mar. 31, 2022 $ 28,085,459 $ 40 $ 2,317,737 $ 400,993,760 $ (375,226,078)