Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit)

v3.10.0.1
Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit) - USD ($)
Total
Series B-1 Convertible Preferred Stock
Series A-2 Convertible Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2015 $ (50,452,000)     $ 8,000 $ 30,295,000 $ (80,755,000)  
Temporary equity, Beginning balance, Shares at Dec. 31, 2015   3,848,023 1,176,423        
Temporary equity, Beginning balance at Dec. 31, 2015   $ 22,075,000 $ 20,000,000        
Beginning balance, Shares at Dec. 31, 2015       1,583,601      
Exercise of stock options 25,000       25,000    
Exercise of stock options, Shares       33,395      
Stock-based compensation 83,000       83,000    
Other comprehensive (loss) income (2,000)           $ (2,000)
Net loss (6,860,000)         (6,860,000)  
Ending balance at Dec. 31, 2016 (57,206,000)     $ 8,000 30,403,000 (87,615,000) (2,000)
Temporary equity, Ending balance, Shares at Dec. 31, 2016   3,848,023 1,176,423        
Temporary equity, Ending balance at Dec. 31, 2016   $ 22,075,000 $ 20,000,000        
Ending balance, Shares at Dec. 31, 2016       1,616,996      
Issuance of common stock upon IPO, net $3.0 million in commissions and discounts 32,426,000     $ 16,000 32,410,000    
Issuance of common stock upon IPO, Shares       3,220,000      
IPO costs (1,870,000)       (1,870,000)    
Conversion of convertible preferred stock of common stock upon IPO 42,075,000     $ 23,000 42,052,000    
Temporary equity conversion of convertible preferred stock of common stock upon IPO, Shares   (3,848,023) (1,176,423)        
Temporary equity conversion of convertible preferred stock of common stock upon IPO   $ (22,075,000) $ (20,000,000)        
Conversion of convertible preferred stock of common stock upon IPO, Shares       4,689,753      
Reclassification of preferred stock warrant liability into additional paid in capital upon IPO 5,711,000       5,711,000    
Exercise of stock options 55,000       55,000    
Exercise of stock options, Shares       74,984      
Issuance of common stock in connection with cashless exercise of warrants 1,000     $ 1,000      
Issuance of common stock in connection with cashless exercise of warrants, Shares       191,263      
Issuance of common stock from ESPP purchase 319,000       319,000    
Issuance of common stock from ESPP purchase, Shares       34,133      
Stock-based compensation 628,000       628,000    
Other comprehensive (loss) income 3,000           3,000
Net loss (9,980,000)         (9,980,000)  
Ending balance at Dec. 31, 2017 12,162,000     $ 48,000 109,708,000 (97,595,000) 1,000
Ending balance, Shares at Dec. 31, 2017       9,827,129      
Exercise of stock options 550,000     $ 3,000 547,000    
Exercise of stock options, Shares       609,985      
Issuance of common stock in connection with exercise of warrants 988,000     $ 1,000 987,000    
Issuance of common stock in connection with exercise of warrants, shares       296,691      
Issuance of common stock from ESPP purchase 909,000       909,000    
Issuance of common stock from ESPP purchase, Shares       83,605      
Issuance of common stock from RSU's vested 2,000     $ 3,000 (1,000)    
Issuance of common stock from RSU's vested, shares       47,312      
Stock-based compensation 2,468,000       2,468,000    
Other comprehensive (loss) income (150,000)           (150,000)
Cumulative effect of change in accounting principle 2,943,000         2,943,000  
Net loss (2,725,000)         (2,725,000)  
Ending balance at Dec. 31, 2018 $ 17,147,000     $ 55,000 $ 114,618,000 $ (97,377,000) $ (149,000)
Ending balance, Shares at Dec. 31, 2018       10,864,722