Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Changes in Stockholder's Equity (Unaudited)

v3.20.2
Condensed Consolidated Statements of Changes in Stockholder's Equity (Unaudited) - 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 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)   74,413      
Exercise of stock options and warrants 256,816 $ 74   256,742  
Restricted Stock Units vested during period (in shares)   161,250      
Restricted Stock Units vested during period 0 $ 162   (162)  
Restricted Stock Units withheld for taxes (in shares)   (3,723)      
Restricted Stock Units withheld for taxes (18,057) $ (4)   (18,053)  
Shares purchased through employee stock purchase plan (in shares)   43,940      
Shares purchased through employee stock purchase plan 127,537 $ 44   127,493  
Stock-based compensation 1,123,402     1,123,402  
Net loss (13,677,147)       (13,677,147)
Balance at the end (in shares) at Jun. 30, 2019   42,898,251 2,857,143    
Balance at the end at Jun. 30, 2019 17,696,259 $ 42,898 $ 2,857 129,545,721 (111,895,217)
Balance at the beginning (in shares) at Mar. 31, 2019   42,753,659 2,857,143    
Balance at the beginning at Mar. 31, 2019 23,120,530 $ 42,754 $ 2,857 128,747,037 (105,672,118)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of stock options and warrants (in shares)   43,125      
Exercise of stock options and warrants 162,639 $ 43   162,596  
Restricted Stock Units vested during period (in shares)   61,250      
Restricted Stock Units vested during period 0 $ 61   (61)  
Restricted Stock Units withheld for taxes (in shares)   (3,723)      
Restricted Stock Units withheld for taxes (18,057) $ (4)   (18,053)  
Shares purchased through employee stock purchase plan (in shares)   43,940      
Shares purchased through employee stock purchase plan 127,537 $ 44   127,493  
Stock-based compensation 526,709     526,709  
Net loss (6,223,099)       (6,223,099)
Balance at the end (in shares) at Jun. 30, 2019   42,898,251 2,857,143    
Balance at the end at Jun. 30, 2019 17,696,259 $ 42,898 $ 2,857 129,545,721 (111,895,217)
Balance at the beginning (in shares) at Dec. 31, 2019   44,384,222 2,857,143    
Balance at the beginning 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)   8,000,000.0      
Balance at the end (in shares) at Mar. 31, 2020   59,560,252 1,257,143    
Balance at the end at Mar. 31, 2020 25,588,742 $ 59,560 $ 1,257 160,935,648 (135,407,723)
Balance at the beginning (in shares) at Dec. 31, 2019   44,384,222 2,857,143    
Balance at the beginning at Dec. 31, 2019 20,995,565 $ 44,384 $ 2,857 135,238,941 (114,290,617)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
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)   50,239      
Exercise of stock options and warrants 92,342 $ 50   92,292  
Restricted Stock Units vested during 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)   58,336      
Shares purchased through employee stock purchase plan 132,910 $ 58   132,852  
Stock-based compensation 3,901,897     3,901,897  
Net loss (34,398,410)       (34,398,410)
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  
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  
Balance at the end (in shares) at Jun. 30, 2020   74,900,047 1,257,143    
Balance at the end at Jun. 30, 2020 50,578,151 $ 74,899 $ 1,257 199,191,022 (148,689,027)
Balance at the beginning (in shares) at Mar. 31, 2020   59,560,252 1,257,143    
Balance at the beginning at Mar. 31, 2020 25,588,742 $ 59,560 $ 1,257 160,935,648 (135,407,723)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
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)   25,071      
Exercise of stock options and warrants 18,135 $ 25   18,110  
Restricted Stock Units vested during 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)   58,336      
Shares purchased through employee stock purchase plan 132,910 $ 58   132,852  
Stock-based compensation 2,785,574     2,785,574  
Net loss (13,281,304)       (13,281,304)
Balance at the end (in shares) at Jun. 30, 2020   74,900,047 1,257,143    
Balance at the end at Jun. 30, 2020 $ 50,578,151 $ 74,899 $ 1,257 $ 199,191,022 $ (148,689,027)