Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.6.0.2
Stock-Based Compensation (Tables)
 6 Months Ended
Jan. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Assumptions Used to Calculate Fair Value of Stock Based Compensation

The following assumptions were used to calculate the fair value of stock-based compensation during the three-month periods ended January 31, 2017 and 2016:

 

    January 31, 2017     January 31, 2016  
Expected volatility     96.13% - 124.47 %     88.31% - 88.37 %
Risk-free interest rate     1.24% - 2.52 %     1.58% - 2.01 %
Expected forfeiture rate     0 %     0 %
Expected dividend yield     —       —  
Expected term     2.92 - 10 years       5 - 6.5 years  

  

The following assumptions were used to calculate the fair value of stock-based compensation during the six-month periods ended January 31, 2017 and 2016:

 

    January 31, 2017     January 31, 2016  
Expected volatility     91.73% - 124.47 %     83.57% - 89.70 %
Risk-free interest rate     0.82% - 2.54 %     0.86% - 2.01 %
Expected forfeiture rate     0 %     0 %
Expected dividend yield     —       —  
Expected term     2.59 - 10 years       2.6 - 6.5 years