Annual report pursuant to Section 13 and 15(d)

EQUITY INCENTIVE PLANS AND STOCK BASED COMPENSATION (Tables)

v2.4.0.6
EQUITY INCENTIVE PLANS AND STOCK BASED COMPENSATION (Tables)
12 Months Ended
Dec. 31, 2012
Stock Option Activity Under Equity Incentive Plan

Activity under the 2004 Plan is set forth below:

 

     Shares
Available
for Grant
    Outstanding Options      Weighted
Average
Exercise
Price
 
     Number of
Shares
    Exercise
Price
    

Balances, December 31, 2009

     143,505        935,660      $ 0.42–21.66         1.17   

Additional shares reserved

     2,452,401        —         

Options granted

     (1,849,500     1,849,500        0.99–1.88         1.45   

Options exercised

     —         (20,000     0.79–1.30         1.05   

Options canceled

     19,442        (19,442     0.79–1.95         1.61   
  

 

 

   

 

 

      

Balances, December 31, 2010

     765,848        2,745,718      $ 0.42–3.18       $ 1.36   

Additional shares reserved

     1,250,000        —         

Options granted

     (1,196,500     1,196,500        1.53–1.86         1.64   

Options exercised

     —         (11,603     0.79–1.44         1.24   

Options canceled

     258,436        (258,436     0.79–1.88         1.38   
  

 

 

   

 

 

      

Balances, December 31, 2011

     1,077,784        3,672,179      $ 0.42–3.18       $ 1.45   

Additional shares reserved

     1,250,000        —         

Options granted

     (1,844,000     1,844,000        1.38–$7.75         6.24   

Options exercised

     —         (402,580     0.79–$3.08         1.39   

Options canceled

     14,627        (14,627     0.79–$6.18         4.25   
  

 

 

   

 

 

      

Balances, December 31, 2012

     498,411        5,098,972      $ 0.42–$7.75       $ 3.18   
  

 

 

   

 

 

      
Stock Options Outstanding and Exercisable by Exercise Price

At December 31, 2012, stock options outstanding and exercisable by exercise price were as follows:

 

    Options Outstanding     Options Exercisable  

Range of

Exercise

Prices

  Number
Outstanding
    Weighted
Average
Remaining
Contractual
Life (Years)
    Weighted
Average
Exercise
Price
    Number
Exercisable
    Weighted
Average
Exercise
Price
 
$0.42 – 1.38     664,316        5.31      $ 1.12        619,876      $ 1.10   
$1.44 – 1.44     1,397,189        7.37        1.44        889,657        1.44   
$1.49 – 1.62     180,000        8.23        1.58        76,527        1.61   
$1.64 – 1.64     962,095        8.41        1.64        378,651        1.64   
$1.69 – 6.85     934,372        9.05        4.93        223,131        4.16   
$7.00 – 7.75     961,000        9.34        7.28        127,496        7.22   
 

 

 

       

 

 

   
$0.42 – 7.75     5,098,972        8.01      $ 3.18        2,315,388      $ 1.97   
 

 

 

       

 

 

   
Weighted-Average Fair Value Valuation Assumptions
The fair value of employee stock options and employee purchase rights under the Company’s ESPP was estimated using the following weighted-average assumptions for the years ended December 31, 2012, 2011 and 2010:

 

     Years ended December 31,  
     2012     2011     2010  

Employee Stock Options

      

Risk-free interest rate

     1.12     1.88     2.35

Expected life (in years)

     5.99        5.98        5.99   

Dividend yield

     —         —         —    

Volatility

     105     92     85

Weighted-average fair value of stock options granted

   $ 5.09      $ 1.23      $ 1.05   

Employee Stock Purchase Plan

      

Risk-free interest rate

     0.21     0.15     0.40

Expected life (in years)

     1.25        1.25        1.25   

Dividend yield

     —         —         —    

Volatility

     111     80     88

Weighted-average fair value of ESPP purchase rights

   $ 3.46      $ 0.66      $ 0.80   
Assumptions of Equity-Based Payments to Non-Employees
Equity-Based Payments to Non-Employees using the following assumptions:

 

     Years Ended December 31,  
       2012         2011         2010    

Risk-free interest rate

     1.93     1.37     1.94

Expected life (in years)

     10        5.15        5.00   

Dividend yield

     —         —         —    

Expected volatility

     101     92     85
Stock-Based Compensation Expense

Total stock-based compensation expense was allocated to research and development and general and administrative as follows (in thousands):

 

     Year Ended December 31,  
     2012      2011      2010  

Stock-based compensation expense:

        

Research and development

   $ 1,521       $ 471       $ 381   

General and administrative

     1,489         568         422   
  

 

 

    

 

 

    

 

 

 
   $ 3,010       $ 1,039       $ 803