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Net Loss Per Share
9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Net Loss Per Share
12. Net Loss Per Share
The Company computes basic and diluted net loss per share using a methodology that gives effect to the impact of outstanding participating securities (the
“two-class
method”). As the three months and nine months ended September 30, 2019 and 2018 resulted in net losses attributable to common shareholders, there is no income allocation required under the
two-class
method or dilution attributed to weighted average shares outstanding in the calculation of diluted net loss per share.
The following potentially dilutive securities outstanding prior to the use of the treasury stock method have been excluded from the computation of diluted weighted-average shares outstanding, as they would be anti-dilutive.
 
   
As of September 30,
 
   
2019
   
2018
 
Options to purchase common stock
   1,088,676    1,041,407 
Warrants to purchase common stock
   18,653,195    5,258,444