Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2017   34,350,000    
Beginning Balance at Dec. 31, 2017 $ 25,182 $ 343 $ 153,168 $ (128,329)
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation 7,606   7,606  
Exercise of stock options (in shares)   1,101,000    
Exercise of stock options 3,884 $ 11 3,873  
Issuance of common shares (in shares)   3,450,000    
Issuance of common shares 132,707 $ 35 132,672  
Net loss (22,397)     (22,397)
Ending Balance (in shares) at Dec. 31, 2018   38,901,000    
Ending Balance at Dec. 31, 2018 146,982 $ 389 297,319 (150,726)
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation 10,304   10,304  
Exercise of stock options (in shares)   689,000    
Exercise of stock options 4,002 $ 7 3,995  
Net loss $ (29,135)     (29,135)
Ending Balance (in shares) at Dec. 31, 2019 39,589,755 39,590,000    
Ending Balance at Dec. 31, 2019 $ 132,153 $ 396 311,618 (179,861)
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation 8,470   8,470  
Issuance of restricted and performance stock units (in shares)   249,000    
Issuance of restricted and performance stock units 0 $ 2 (2)  
Shares surrendered by employees to pay tax withholdings (in shares)   (40,000)    
Shares surrendered by employees to pay tax withholdings (670)   (670)  
Exercise of stock options and employee stock purchase plan (in shares)   572,000    
Exercise of stock options and employee stock purchase plan 3,300 $ 6 3,294  
Exercise of Oberland option net of settlement (in shares)   248,000    
Exercise of Oberland option net of settlement 3,682 $ 2 3,680  
Net loss $ (23,786)     (23,786)
Ending Balance (in shares) at Dec. 31, 2020 40,618,766 40,619,000    
Ending Balance at Dec. 31, 2020 $ 123,149 $ 406 $ 326,390 $ (203,647)