Quarterly report pursuant to Section 13 or 15(d)

Condensed Statements of Stockholders' Equity (Unaudited)

v3.21.1
Condensed Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
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 56   56    
Exercise of common stock options, Shares   12,937      
Issuance of common stock under Employee Stock Purchase Plan 646   646    
Issuance of common stock under Employee Stock Purchase Plan, Shares   74,465      
Vesting of restricted stock units   41,050      
Stock-based compensation expense 2,707   2,707    
Issuance of common stock warrants in connection with debt refinancing 619   619    
Net unrealized loss on available-for- sale securities (137)     (137)  
Net loss (19,595)       (19,595)
Balances at Mar. 31, 2020 82,085 $ 23 297,374 28 (215,340)
Common Stock Balance, Shares at Mar. 31, 2020   23,227,421      
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, Shares 257,834        
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 $ 1,360   1,360    
Exercise of common stock options, Shares 257,834 129,161      
Issuance of common stock under Employee Stock Purchase Plan $ 873   873    
Issuance of common stock under Employee Stock Purchase Plan, Shares   93,346      
Vesting of restricted stock units   147,349      
Stock transaction associated with taxes withheld on restricted stock units (407)   (407)    
Stock transaction associated with taxes withheld on restricted stock units,Shares   (18,366)      
Stock-based compensation expense 3,952   3,952    
Net unrealized loss on available-for- sale securities (129)     $ (129)  
Net loss (30,359)       (30,359)
Balances at Mar. 31, 2021 $ 307,338 $ 46 $ 565,524   $ (258,232)
Common Stock Balance, Shares at Mar. 31, 2021   46,103,606