Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Beginning Balance at Dec. 31, 2015 $ 300 $ 111,369 $ (103,473) $ 8,196
Beginning Balance (in shares) at Dec. 31, 2015 29,985,000      
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation   1,390   1,390
Exercise of stock options $ 3 1,075   1,078
Exercise of stock options (in shares) 341,000      
Issuance of common shares $ 27 18,641   18,668
Issuance of common shares (in shares) 2,683,000      
Net loss     (14,411) (14,411)
Ending Balance at Dec. 31, 2016 $ 330 132,475 (117,884) 14,921
Ending Balance (in shares) at Dec. 31, 2016 33,009,000      
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation   3,609   3,609
Exercise of stock options $ 5 1,429   1,434
Exercise of stock options (in shares) 536,000      
Issuance of common shares $ 8 15,655   15,663
Issuance of common shares (in shares) 805,000      
Net loss     (10,445) (10,445)
Ending Balance at Dec. 31, 2017 $ 343 153,168 (128,329) $ 25,182
Ending Balance (in shares) at Dec. 31, 2017 34,350,000     34,350,329
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation   7,606   $ 7,606
Exercise of stock options and employee stock purchase plan $ 11 3,873   3,884
Exercise of stock options and employee stock purchase plan (in shares) 1,101,000      
Issuance of common shares $ 35 132,672   132,707
Issuance of common shares (in shares) 3,450,000      
Net loss     (22,397) (22,397)
Ending Balance at Dec. 31, 2018 $ 389 $ 297,319 $ (150,726) $ 146,982
Ending Balance (in shares) at Dec. 31, 2018 38,901,000     38,900,875