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 - 9 months ended Sep. 30, 2017 - USD ($)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Balance at Dec. 31, 2016 $ 28,551,223 $ 202 $ 153,075,595 $ (124,524,574)
Balance (in shares) at Dec. 31, 2016   20,367,929    
Stock-based compensation - stock options 738,599 $ 0 738,599 0
Stock-based compensation - restricted stock units ("RSUs") 9,865,351 0 9,865,351 0
Stock-based compensation - employee stock purchase plan ("ESPP") 266,398 0 266,398 0
Stock-based compensation - performance share units ("PSUs") 1,601,160 0 1,601,160 0
Stock-based compensation - deferred stock units ("DSUs") 1,362 0 1,362 0
Issuance of shares for RSUs 0 $ 6 (6) 0
Issuance of shares for RSUs (in shares)   590,536    
Issuance of shares for DSUs 0 $ 0 0 0
Issuance of shares for DSUs (in shares)   14,953    
Exercise of stock options 738,552 $ 2 738,550 0
Exercise of stock options (in shares)   159,855    
Cashless exercise of warrants 0 $ 0 0 0
Cashless exercise of warrants (in shares)   19,611    
Shares purchased from contributions to the ESPP 696,274 $ 0 696,274 0
Shares purchased from contributions to the ESPP (In shares)   33,620    
Issuance of shares and warrants in a private placement, net of issuance costs of $67,388 14,932,547 $ 10 14,932,537 0
Issuance of shares and warrants in a private placement, net of issuance costs of $67,388 (in shares)   976,139    
Net loss (38,140,398) $ 0 0 (38,140,398)
Balance at Sep. 30, 2017 $ 19,251,068 $ 220 $ 181,915,820 $ (162,664,972)
Balance (in shares) at Sep. 30, 2017   22,162,643