Annual report pursuant to Section 13 and 15(d)

Statements of Stockholders' Equity

v3.23.1
Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive (Loss) Income
Accumulated Deficit
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   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, Shares   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 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 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, Shares   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 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      
Exercise of common stock options 268   268    
Exercise of common stock options, Shares   49,654      
Issuance of common stock under Employee Stock Purchase Plan 1,613   1,613    
Issuance of common stock under Employee Stock Purchase Plan, Shares   270,516      
Vesting of restricted stock units   $ 1 (1)    
Vesting of restricted stock units, Shares   620,647      
Stock transaction associated with taxes withheld on restricted stock units (463)   (463)    
Stock transaction associated with taxes withheld on restricted stock units,Shares   (53,567)      
Stock-based compensation expense 26,304   26,304    
Issuance of common stock in connection with At-The-Market sale, net of issuance costs 56,270 $ 11 56,259    
Issuance of common stock in connection with At-The-Market sale, net of issuance costs, Shares   10,285,160      
Net unrealized loss on available-for-sale securities (304)     (304)  
Net loss (119,204)       (119,204)
Balances at Dec. 31, 2022 $ 217,048 $ 58 $ 670,223 $ (618) $ (452,615)
Common Stock Balance, Shares at Dec. 31, 2022   57,499,541