Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.4.0.3
Stock-based Compensation (Tables)
 3 Months Ended
Mar. 31, 2016
Stock-based Compensation  
Schedule of stock-based compensation expense related to all of the entity's share-based awards

Total stock-based compensation expense related to all of our share-based payments that we recognized for the three months ended March 31, 2016 and 2015 were as follows (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended 

 

 

 

 

March 31, 

 

 

 

 

2016

    

2015

 

 

Research and development

 

$
693

 

$
1,160

 

 

General and administrative

 

 
745

 

 
894

 

 

Total stock-based compensation expense

 

$
1,438

 

$
2,054

 

 

 

Summary of weighted-average assumptions relating to options granted pursuant to equity incentive plans

 

 

 

 

 

 

 

 

 

 

Three Months Ended 

 

 

 

 

 

March 31, 

 

 

 

 

    

2016

    

2015

    

    

    

Risk-free interest rate

 
1.8

%  
1.8

%  

 

 

Expected term (in years)

 
6.6

 
6.5

 

 

 

Dividend yield

 
0.0

%  
0.0

%  

 

 

Expected volatility

 
60.5

%  
64.9

%  

 

 

 

Summary of weighted-average assumptions used to calculate fair value of purchase rights granted under Employee Stock Purchase Plan

 

 

 

 

 

 

 

 

 

Three Months Ended 

 

 

 

 

March 31, 

 

 

 

    

2016

    

2015

 

    

Risk-free interest rate

 
0.7

%  
0.6

%

 

Expected term (in years)

 
1.8

 
1.5

 

 

Dividend yield

 
0.0

%  
0.0

%

 

Expected volatility

 
61.5

%  
61.2

%