Annual report pursuant to Section 13 and 15(d)

Statements of Stockholders Equity

v3.22.0.1
Statements of Stockholders Equity - USD ($)
$ in Thousands
Total
Adoption of Accounting Standards Update (ASU) 2014-09
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive (Loss) Income
Accumulated Deficit
Accumulated Deficit
Adoption of Accounting Standards Update (ASU) 2014-09
Balances at Dec. 31, 2018 $ 131,539 $ 10,327 $ 23 $ 281,891 $ (47) $ (150,328) $ 10,327
Common Stock Balance, Shares at Dec. 31, 2018     22,848,184        
Exercise of common stock options 180     180      
Exercise of common stock options, Shares     35,204        
Issuance of common stock under Employee Stock Purchase Plan 1,260     1,260      
Issuance of common stock under Employee Stock Purchase Plan, Shares     131,939        
Vesting of restricted stock units     114,103        
Stock transaction associated with taxes withheld on restricted stock units (297)     (297)      
Stock transaction associated with taxes withheld on restricted stock units,Shares     (30,461)        
Stock-based compensation expense 10,312     10,312      
Net unrealized gain / (loss) on available-for-sale securities 212       212    
Net loss (55,744)         (55,744)  
Balances at Dec. 31, 2019 97,789   $ 23 293,346 165 (195,745)  
Common Stock Balance, Shares at Dec. 31, 2019     23,098,969        
Exercise of common stock options $ 1,861     1,861      
Exercise of common stock options, Shares 257,834   171,354        
Issuance of common stock under Employee Stock Purchase Plan $ 1,285     1,285      
Issuance of common stock under Employee Stock Purchase Plan, Shares     195,992        
Vesting of restricted stock units     151,976        
Stock transaction associated with taxes withheld on restricted stock units (314)     (314)      
Stock transaction associated with taxes withheld on restricted stock units,Shares     (30,461)        
Stock-based compensation expense 11,917     11,917      
Issuance of common stock warrants in connection with debt refinancing 619     619      
Issuance of common stock in connection with public offering, net of issuance costs 227,252   $ 20 227,232      
Issuance of common stock in connection with public offering, net of issuance costs, Shares     19,550,000        
Issuance of common stock in connection with At-The-Market sale, net of issuance costs 23,803   $ 3 23,800      
Issuance of common stock in connection with At-The-Market sale, net of issuance costs, Shares     2,614,286        
Net unrealized gain / (loss) on available-for-sale securities (36)       (36)    
Net loss (32,128)         (32,128)  
Balances at Dec. 31, 2020 $ 332,048   $ 46 559,746 129 (227,873)  
Common Stock Balance, Shares at Dec. 31, 2020     45,752,116        
Exercise of common stock options, Shares 262,279            
Exercise of common stock options and common stock warrants for cash $ 2,485     2,485      
Exercise of common stock options and common stock warrants for cash, Shares     246,678        
Return and retirement of common stocks (7)     (7)      
Return and retirement of common stocks, shares     (7,687)        
Issuance of common stock under Employee Stock Purchase Plan 1,765     1,765      
Issuance of common stock under Employee Stock Purchase Plan, Shares     145,809        
Vesting of restricted stock units     238,724        
Stock transaction associated with taxes withheld on restricted stock units (987)     (987)      
Stock transaction associated with taxes withheld on restricted stock units,Shares     (48,509)        
Stock-based compensation expense 23,241     23,241      
Net unrealized gain / (loss) on available-for-sale securities (443)       (443)    
Net loss (105,538)         (105,538)  
Balances at Dec. 31, 2021 $ 252,564   $ 46 $ 586,243 $ (314) $ (333,411)  
Common Stock Balance, Shares at Dec. 31, 2021     46,327,131