Annual report pursuant to Section 13 and 15(d)

STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIENCY)

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STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIENCY) - USD ($)
$ in Thousands
Series C Preferred Stock [Member]
Preferred D Stocks [Member]
Common stocks [Member]
Additional Paid-in Capital [Member]
Accumulated deficit [Member]
Total
Balance at Beginning at Dec. 31, 2016 $ 2 $ 2 $ 20,073 $ (22,576) $ (2,499)
Balance at Beginning (in shares) at Dec. 31, 2016 1,951,261 2,632,710      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation related to options granted to employees 800 800
Exercise of warrants for Common stock 852 852
Deemed dividend related to extension of February 2015 warrants to Common stock in January 2017 841 (841) 0
Proceeds from issuance of Common stock, Preferred D stock and warrants, net of issuance costs $ 1 5,055 5,056
Proceeds from issuance of Common stock, Preferred D stock and warrants, net of issuance costs (in shares)   327 897,958      
Conversion of convertible notes and accrued interest into Common and Preferred D stock $ 1 1,761 1,762
Conversion of convertible notes and accrued interest into Common and Preferred D stock (in shares)   131 230,680      
Exchange/Conversion of Common Stock into Preferred D (in shares) (154) 153,530      
Issuance of Common and Preferred C stock upon cashless exercise of warrants and reclassification from liability to equity 2,628 2,628
Issuance of Common and Preferred C stock upon cashless exercise of warrants and reclassification from liability to equity (in shares) 531,881 20,987      
Total loss (4,965) (4,965)
Balance at End at Dec. 31, 2017 $ 2 $ 0 $ 4 32,010 (28,382) 3,634
Balance at End (in shares) at Dec. 31, 2017 2,483,142 304 3,935,865      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation related to options granted to employees       889 889
Exercise of warrants for Common stock       91 91
Exercise of warrants for Common stock (in shares)     67,670      
Exercise of stock options for Common stock       3   3
Exercise of stock options for Common stock (in shares)     48,017      
Proceeds from issuance of Common stock, Preferred D stock and warrants, net of issuance costs          
Proceeds from issuance of Common stock, Preferred D stock and warrants, net of issuance costs (in shares)   327        
Exchange/Conversion of Common Stock into Preferred D       0
Exchange/Conversion of Common Stock into Preferred D (in shares) 250,000   (250,000)      
Total loss (4,154) (4,154)
Balance at End at Dec. 31, 2018 $ 2 $ 0 $ 4 $ 32,993 $ (32,536) $ 463
Balance at End (in shares) at Dec. 31, 2018 2,733,142 304 3,801,552