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Share-based Compensation (Tables)
3 Months Ended
Sep. 30, 2015
Share-Based Compensation Expense for Stock Awards

Total share-based compensation expense for all stock awards consists of the following, in thousands:

 

     Three Months Ended September 30,  
     2015      2014  

Research and development

   $ 208       $ 415   

General and administrative

     562         995   
  

 

 

    

 

 

 

Total share-based compensation

   $ 770       $ 1,410   
  

 

 

    

 

 

 
Summary of Stock Option Activity

Stock option activity for the three months ended September 30, 2015 was as follows:

 

     Number of
Options
     Weighted-
Average
Exercise Price
     Weighted-Average
Remaining Contractual
Term (in years)
     Aggregate
Intrinsic Value
 

Outstanding at June 30, 2015

     1,614,317       $ 7.07         

Granted

     1,185,962         1.62         

Forfeited / Cancelled

     (137,637      6.55         

Expired

     (13,705      4.62         
  

 

 

    

 

 

    

 

 

    

 

 

 

Outstanding at September 30, 2015

     2,648,937       $ 4.67         6.2       $ —     
  

 

 

    

 

 

    

 

 

    

 

 

 

Vested and exercisable at September 30, 2015

     815,872       $ 6.84         3.4       $ —     
  

 

 

    

 

 

    

 

 

    

 

 

 
Fair Value of Stock Options Weighted-Average Assumptions Used

The following weighted-average assumptions were used to determine the fair value of options granted during the period:

 

     Three Months Ended September 30,  
     2015     2014  

Risk-free interest rate

     1.8     1.7

Expected life (years)

     5.7        5.0   

Expected volatility

     117.4     117.0

Dividend yield

     0.0     0.0

Weighted-average grant date fair value

   $ 1.38      $ 5.15