Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT)

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CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
IPO
Common Stock
Common Stock
IPO
Additional Paid-in Capital
Additional Paid-in Capital
IPO
Accumulated Deficit
Series A Convertible Preferred Stock
Series A-1 Convertible Preferred Stock
Series A-2 Convertible Preferred Stock
Series B Convertible Preferred Stock
Balance, beginning of period at Dec. 31, 2017 $ (89,911)   $ 1   $ 54,892   $ (144,804)        
Balance, shares at Dec. 31, 2017               7,471,765 1,586,024 1,183,703 1,665,291
Balance, beginning of period at Dec. 31, 2017               $ 44,564 $ 4,487 $ 9,733 $ 21,613
Balance, shares at Dec. 31, 2017     1,027,113                
Exercise of warrants               $ 47      
Exercise of warrants, shares               310,676      
Dividends declared and paid (10,152)       (10,152)            
Dividends declared and paid, shares               944,694 66,255 49,456  
Dividends declared and paid               $ 9,380 $ 622 $ 150  
Issuance of common stock upon exercise of stock options $ 17       17            
Issuance of common stock upon exercise of stock options, shares 15,475   15,475                
Reclassification of warrants from liability to preferred stock upon exercise               $ 2,951      
Recapitalization of convertible preferred stock into common stock $ 93,547   $ 13   93,534            
Recapitalization of convertible preferred stock into common stock, shares               (8,727,135) (1,652,279) (1,233,159) (1,665,291)
Recapitalization of convertible preferred stock into common stock               $ (56,942) $ (5,109) $ (9,883) $ (21,613)
Recapitalization of convertible preferred stock into common stock, shares     13,277,864                
Reclassification of warrant from liability to equity upon conversion and elimination of preferred stock 1,804       1,804            
Issuance of common stock, net of issuance costs 8,295   $ 1   8,294            
Issuance of common stock, net of issuance costs, shares     1,270,905                
Employee and nonemployee stock-based compensation 252       252            
Net income (loss) 1,277           1,277        
Balance, at end of period at Dec. 31, 2018 5,129   $ 15   148,641   (143,527)        
Balance, shares at Dec. 31, 2018     15,591,357                
Beginning balance adjustment - Impact of ASC 606 | ASC 606 3,115           3,115        
Exercise of warrants 23       23            
Exercise of warrants, shares     155,338                
Issuance of common stock upon exercise of stock options $ 81       81            
Issuance of common stock upon exercise of stock options, shares 95,739   95,739                
Issuance of common stock, net of issuance costs $ 1,604 $ 36,850 $ 1 $ 4 1,603 $ 36,846          
Issuance of common stock, net of issuance costs, shares     228,294 4,297,901              
Issuance of common stock upon ESPP purchase 146       146            
Issuance of common stock upon ESPP purchase, shares     68,606                
Taxes paid on net issuance of restricted stockaward (1,897)       (1,897)            
Employee and nonemployee stock-based compensation 6,308       6,308            
Net income (loss) (25,834)           (25,834)        
Balance, at end of period at Dec. 31, 2019 $ 25,525   $ 20   $ 191,751   $ (166,246)        
Balance, shares at Dec. 31, 2019     20,437,235