Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v2.4.1.9
Stock-based Compensation (Tables)
 3 Months Ended
Mar. 31, 2015
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 in the quarters ended March 31, 2015 and 2014 was as follows (in thousands):

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2015

 

2014

 

Research and development

 

$
1,160 

 

$
1,314 

 

General and administrative

 
894 

 
1,050 

 

Total stock-based compensation expense

 

$
2,054 

 

$
2,364 

 

 

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

 

 

 

Equity Incentive Plans

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2015

 

2014

 

Risk-free interest rate

 
1.8 

%
2.2 

%

Expected term (in years)

 
6.5 

 
6.5 

 

Dividend yield

 
0.0 

%
0.0 

%

Expected volatility

 
64.9 

%
75.2 

%

 

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

 

 

 

Employee Stock Purchase Plan

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2015

 

2014

 

Risk-free interest rate

 
0.6 

%
0.3 

%

Expected term (in years)

 
1.5 

 
1.7 

 

Dividend yield

 
0.0 

%
0.0 

%

Expected volatility

 
61.2 

%
66.0 

%