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 - 3 months ended Mar. 31, 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 226,383 $ 0 226,383 0
Stock-based compensation - restricted stock units ("RSUs") 2,602,775 0 2,602,775 0
Stock-based compensation - employee stock purchase plan ("ESPP") 93,811 0 93,811 0
Stock-based compensation - performance share units ("PSUs") 613,860 0 613,860 0
Stock based compensation - deferred stock units ("DSUs") 1,362 0 1,362 0
Issuance of shares for RSUs 0 $ 2 (2) 0
Issuance of shares for RSUs (in shares)   184,749    
Issuances of shares for DSUs 0 $ 0 0 0
Issuances of shares for DSUs (in shares)   14,953    
Exercise of stock options 26,905 $ 0 26,905 0
Exercise of stock options (in shares)   7,600    
Cashless exercise of warrants 0 $ 0 0 0
Cashless exercise of warrants (in shares)   8,469    
Proceeds from contributions to the ESPP 245,959 $ 0 245,959 0
Net loss (12,473,140) 0 0 (12,473,140)
Balance at Mar. 31, 2017 $ 19,889,138 $ 204 $ 156,886,648 $ (136,997,714)
Balance (in shares) at Mar. 31, 2017   20,583,700