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, 2018   38,901,000    
Beginning 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 and employee stock purchase plan 4,002 $ 7 3,995  
Net loss (29,135)     (29,135)
Ending Balance (in shares) at Dec. 31, 2019   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)  
Exercise of stock options (in shares) 459,254      
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)
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation 10,919   10,919  
Issuance of restricted and performance stock units (in shares)   254,000    
Issuance of restricted and performance stock units $ 0 $ 2 (2)  
Exercise of stock options (in shares) 783,843      
Exercise of stock options and employee stock purchase plan (in shares)   864,000    
Exercise of stock options and employee stock purchase plan $ 5,467 $ 9 5,458  
Net loss $ (26,985)     (26,985)
Ending Balance (in shares) at Dec. 31, 2021 41,736,950 41,737,000    
Ending Balance at Dec. 31, 2021 $ 112,550 $ 417 $ 342,765 $ (230,632)