Annual report pursuant to Section 13 and 15(d)

STATEMENTS OF STOCKHOLDERS' EQUITY

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STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2015 $ 6,990 $ 0 $ 3 $ 321,086 $ (314,099) $ 0
Balance (in shares) at Dec. 31, 2015   0 3,344      
Net income loss 5,135       5,135  
Issuance of common stock upon exercise of warrants, net 0          
Issuance of common stock upon exercise of warrants, net (in shares)     188      
Issuance of common stock upon exercise of options, net 27   $ 1 26    
Issuance of common stock upon exercise of options, net (in shares)     2      
Stock-based compensation 1,039     1,039    
Deemed dividend resulting from downround provision 0          
Balance at Dec. 31, 2016 13,191 $ 0 $ 4 322,151 (308,964) 0
Balance (in shares) at Dec. 31, 2016   0 3,534      
Net income loss (14,307)       (14,307)  
Issuance of warrants to purchase common stock, net 286     286    
Stock-based compensation 1,687     1,687    
Deemed dividend resulting from downround provision 0          
Balance at Dec. 31, 2017 857 $ 0 $ 4 324,124 (323,271) 0
Balance (in shares) at Dec. 31, 2017   0 3,534      
Net income loss (9,023)       (9,023)  
Issuance of warrants to purchase common stock, net 527     527    
Issuance of common stock, net 2,437   $ 2 2,435    
Issuance of common stock, net (in shares)     1,815      
Issuance of preferred stock, net 7,214     7,214    
Issuance of preferred stock, net (in shares)   8        
Issuance of common stock upon conversion of preferred stock, net (6)   $ 5 (11)    
Issuance of common stock upon conversion of preferred stock, net (in shares)   (8) 5,483      
Issuance of common stock upon exercise of warrants, net 3,268   $ 2 3,266    
Issuance of common stock upon exercise of warrants, net (in shares)     2,178      
Stock-based compensation 1,557     1,557    
Deemed dividend resulting from downround provision 285     285 (285)  
Balance at Dec. 31, 2018 $ 6,831 $ 0 $ 13 $ 339,397 $ (332,579) $ 0
Balance (in shares) at Dec. 31, 2018   0 13,010