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Stock Award Plans (Tables)
12 Months Ended
Dec. 31, 2016
Stock Based Award Plans

The following table summarizes information about the Company’s stock-based award plans as of December 31, 2016:

 

     Outstanding
Options
     Outstanding
Restricted
Stock Units
     Shares Available
for Future
Issuance
 

2004 Equity Incentive Plan

     2,052,345        14,203        97,574  

2013 Equity Incentive Plan

     3,399,245        723,763        3,743,013  

2004 Non-Employee Directors’ Stock Option Plan

     78,666        —          —    
  

 

 

    

 

 

    

 

 

 

Total

     5,530,256        737,966        3,840,587  
  

 

 

    

 

 

    

 

 

 
Stock Based Compensation Expense Recognized in Accompanying Consolidated Statements of Operations

Total stock-based compensation expense recognized in the accompanying consolidated statements of operations is as follows (in thousands):

 

     Year Ended December 31,  
     2016      2015      2014  

Employee-related

   $ 5,135      $ 8,407      $ 48,622  

Consultant-related

     —          318        —    
  

 

 

    

 

 

    

 

 

 

Total

   $ 5,135      $ 8,725      $ 48,622  
  

 

 

    

 

 

    

 

 

 
Stock Based Compensation Expense Recognized in Accompanying Consolidated Statements of Operations by Category

Total stock-based compensation expense recognized in the accompanying consolidated statements of operations is included in the following categories (in thousands):

 

     Year Ended December 31,  
     2016      2015      2014  

Cost of goods sold

   $ 695      $ —        $ —    

Research and development

     1,309        3,029        22,357  

Selling, general and administrative

     3,131        5,696        26,265  
  

 

 

    

 

 

    

 

 

 

Total

   $ 5,135      $ 8,725      $ 48,622  
  

 

 

    

 

 

    

 

 

 
Assumptions Used to Calculate Fair Value of Employee Stock Options

The Company calculated the fair value of employee stock options granted during the years ended December 31, 2016, 2015 and 2014 using the following assumptions:

 

     Year Ended December 31,
     2016    2015    2014

Risk-free interest rate

   1.18% — 1.80%    1.61% —1.86%    1.64% — 2.11%

Expected lives

   5.13 — 5.82 years    5.79 — 5.86 years    5.77 — 6.09 years

Volatility

   77.57% — 82.75%    69.76% — 71.84%    73.98% — 84.85%

Dividends

   —      —      —  
Summary of Stock Options Outstanding

The following table summarizes information about stock options outstanding:

 

     Number of
Shares
     Weighted
Average Exercise
Price per Share
     Aggregate
Intrinsic
Value ($000)
 

Outstanding at January 1, 2016

     3,955,845      $ 22.70      $ —    

Granted

     2,236,693        4.50     

Exercised

     (55,231      8.45     

Forfeited

     (407,161      13.60     

Expired

     (199,890      23.65     
  

 

 

    

 

 

    

Outstanding at December 31, 2016

     5,530,256      $ 16.10      $ 2  

Vested and expected to vest at December 31, 2016

     5,399,777      $ 16.35      $ 2  

Exercisable at December 31, 2016

     3,414,586      $ 22.50      $ —    
Summary of Restricted Stock Unit Activity

A summary of restricted stock unit activity for the year ended December 31, 2016 is presented below:

 

     Number of
Shares
     Weighted
Average
Grant Date
Fair Value
per Share
 

Outstanding at January 1, 2016

     360,924      $ 24.25  

Granted

     800,530        4.50  

Vested

     (131,000      21.70  

Forfeited

     (292,488      11.60  
  

 

 

    

 

 

 

Outstanding at December 31, 2016

     737,966      $ 8.40