Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY

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CONDENSED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2016 - USD ($)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Balance at Dec. 31, 2015 $ 29,274,676 $ 161 $ 107,981,695 $ (78,707,180)
Balance (in shares) at Dec. 31, 2015   16,298,208    
Stock-based compensation - stock options 546,297 $ 0 546,297 0
Stock-based compensation - restricted stock units ("RSUs") 2,372,099 0 2,372,099 0
Stock-based compensation - employee stock purchase plan ("ESPP") 122,716 0 122,716 0
Stock-based compensation - performance share units ("PSUs") 443,129 0 443,129 0
Stock-based compensation - deferred stock units ("DSUs") 60,970 0 60,970 0
Issuance of shares for RSUs 0 $ 2 (2) 0
Issuance of shares for RSUs (in shares)   229,748    
Issuance of shares for PSUs 0 $ 1 (1) 0
Issuance of shares for PSUs (in shares)   57,919    
Exercise of stock options 252,641 $ 1 252,640 0
Exercise of stock options (in shares)   101,462    
Cashless exercise of warrants 0 $ 3 (3) 0
Cashless exercise of warrants (in shares)   253,681    
Shares purchased from contributions to the ESPP 338,680 $ 1 338,679 0
Shares purchased from contributions to the ESPP (In shares)   47,685    
Net loss (21,081,098) $ 0 0 (21,081,098)
Balance at Jun. 30, 2016 $ 12,330,110 $ 169 $ 112,118,219 $ (99,788,278)
Balance (in shares) at Jun. 30, 2016   16,988,703