Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Total
BALANCE at Dec. 31, 2018 $ 2,526,049 $ 47 $ 108,323,208 $ (97,588,343) $ 13,260,961
BALANCE (in shares) at Dec. 31, 2018 473 4,732,387      
Stock-based compensation     866,791   866,791
Vested restricted stock (in shares)   9,334      
Issuance of common stock, warrants and preferred stock, net of issuance costs   $ 40 9,024,529   9,024,569
Issuance of common stock, warrants and preferred stock, net of issuance costs (in shares)   4,000,000      
Retired shares (in shares)   (32)      
Conversion of preferred stock to common stock $ (1,377,845) $ 7 1,377,838   1,377,845
Conversion of preferred shares into common shares (in shares) (258) 645,000      
Net loss       (14,092,912) (14,092,912)
BALANCE at Dec. 31, 2019 $ 1,148,204 $ 94 119,592,366 (111,681,255) 9,059,409
BALANCE (in shares) at Dec. 31, 2019 215 9,386,689      
Stock-based compensation     467,541   467,541
Vested restricted stock (in shares)   9,334      
Issuance of common stock, warrants and preferred stock, net of issuance costs $ 18,887,645 $ 327 40,831,284   59,719,256
Issuance of common stock, warrants and preferred stock, net of issuance costs (in shares) 1,519 32,749,764      
Retired shares (in shares)   (133)      
Conversion of warrants into common shares   $ 33 642,462   642,495
Conversion of warrants into common shares (in shares)   3,297,075      
Net loss       (15,094,172) (15,094,172)
BALANCE at Dec. 31, 2020 $ 20,035,849 $ 454 $ 161,533,653 $ (126,775,427) $ 54,794,529
BALANCE (in shares) at Dec. 31, 2020 1,734 45,442,729