Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Tables)

v3.5.0.2
Stock-based Compensation (Tables)
9 Months Ended
Sep. 30, 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 and nine months ended September 30, 2016 and 2015 were as follows (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended 

 

Nine Months Ended

 

 

 

September 30, 

 

September 30, 

 

 

 

2016

    

2015

 

2016

    

2015

 

Research and development

 

$

643

 

$

966

 

$

2,746

 

$

3,182

 

General and administrative

 

 

572

 

 

849

 

 

1,921

 

 

2,596

 

Restructuring charges

 

 

499

 

 

 —

 

 

499

 

 

 —

 

Total stock-based compensation expense

 

$

1,714

 

$

1,815

 

$

5,166

 

$

5,778

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended 

 

 

Nine Months Ended 

 

 

 

 

September 30, 

 

 

September 30, 

 

 

 

    

2016

    

2015

    

    

2016

    

2015

 

    

Risk-free interest rate

 

 —

 

1.9

%  

 

1.7

%  

1.8

%

 

Expected term (in years)

 

 —

 

6.0

 

 

6.4

 

6.5

 

 

Dividend yield

 

 —

 

0.0

%  

 

0.0

%  

0.0

%

 

Expected volatility

 

 —

 

59.6

%  

 

63.3

%  

65.0

%

 

 

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

 

 

 

 

 

 

 

 

 

Nine Months Ended 

 

 

 

 

September 30, 

 

 

 

    

2016

    

2015

 

    

Risk-free interest rate

 

0.5

%  

0.6

%

 

Expected term (in years)

 

1.5

 

1.5

 

 

Dividend yield

 

0.0

%  

0.0

%

 

Expected volatility

 

63.0

%  

61.2

%