Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity

v3.20.4
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Total
Common stock
Preferred Stock
Additional paid-in capital
Accumulated deficit
Balance at the beginning (in shares) at Dec. 31, 2018   40,804,189 2,857,143    
Balance at the beginning at Dec. 31, 2018 $ 20,907,748 $ 40,804 $ 2,857 $ 119,082,157 $ (98,218,070)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of shares pursuant to common stock private placement, net of offering costs (in shares)   1,200,000      
Issuance of shares pursuant to common stock private placement, net of offering costs 3,708,602 $ 1,200   3,707,402  
Issuance of shares of common stock in underwritten public offering, net of offering costs (in shares)   1,818,182      
Issuance of shares of common stock in underwritten public offering, net of offering costs 8,975,960 $ 1,818   8,974,142  
Exercise of stock options and warrants (in shares)   323,177      
Exercise of stock options and warrants 836,188 $ 323   835,865  
Restricted Stock Units vested during the period (in shares)   172,500      
Restricted stock units vested during period 0 $ 173   (173)  
Restricted Stock Units withheld for taxes (in shares)   (6,969)      
Restricted stock units withheld for taxes (33,959) $ (7)   (33,952)  
Shares purchased through employee stock purchase plan (in shares)   73,143      
Shares purchased through employee stock purchase plan 210,777 $ 73   210,704  
Stock-based compensation 2,462,796     2,462,796  
Net loss (16,072,547)       (16,072,547)
Balance at the end (in shares) at Dec. 31, 2019   44,384,222 2,857,143    
Balance at the end at Dec. 31, 2019 20,995,565 $ 44,384 $ 2,857 135,238,941 (114,290,617)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Conversion of preferred stock to common stock (in shares)   8,000,000 (1,600,000)    
Conversion of preferred stock to common stock 0 $ 8,000 $ (1,600) (6,400)  
Issuance of shares related to Aevi Merger (in shares)   3,893,361      
Issuance of shares related to Aevi Merger 15,495,578 $ 3,894   15,491,684  
Issuance of shares pursuant to registered direct offering, net of offering costs (in shares)   1,306,282      
Issuance of shares pursuant to registered direct offering, net of offering costs 5,136,184 $ 1,306   5,134,878  
Issuance of shares pursuant to common stock private placement, net of offering costs (in shares)   1,951,219      
Issuance of shares pursuant to common stock private placement, net of offering costs 3,887,991 $ 1,951   3,886,040  
Issuance of shares of common stock in underwritten public offering, net of offering costs (in shares)   15,180,000      
Issuance of shares of common stock in underwritten public offering, net of offering costs 35,427,963 $ 15,180   35,412,783  
Exercise of stock options and warrants (in shares)   75,239      
Exercise of stock options and warrants 114,092 $ 75   114,017  
Restricted Stock Units vested during the period (in shares)   111,667      
Restricted stock units vested during period 0 $ 111   (111)  
Restricted Stock Units withheld for taxes (in shares)   (35,279)      
Restricted stock units withheld for taxes (93,869) $ (35)   (93,834)  
Shares purchased through employee stock purchase plan (in shares)   137,416      
Shares purchased through employee stock purchase plan 312,175 $ 137   312,038  
Stock-based compensation 6,785,686     6,785,686  
Net loss (63,499,772)       (63,499,772)
Balance at the end (in shares) at Dec. 31, 2020   75,004,127 1,257,143    
Balance at the end at Dec. 31, 2020 $ 24,561,593 $ 75,003 $ 1,257 $ 202,275,722 $ (177,790,389)