Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v2.4.0.8
Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2013
Financial Liabilities Subject to Fair Value Measurements

The following table sets forth the Company’s financial liabilities, related to warrants issued in the August 2008, October 2009 and March 2011 offerings, subject to fair value measurements as of September 30, 2013 and December 31, 2012:

 

(in thousands)    Fair Value as of
September 30,
2013
     Basis of Fair Value Measurements  
      Level 1      Level 2      Level 3  

August 2008 warrants

   $ —         $ —         $ —        $ —     

October 2009 warrants

     11,406         —          —          11,406   

March 2011 warrants

     12,384        —          —          12,384  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total common stock warrants

   $ 23,790      $ —        $ —        $ 23,790   
  

 

 

    

 

 

    

 

 

    

 

 

 

 

(in thousands)    Fair Value as of
December 31,
2012
     Basis of Fair Value Measurements  
      Level 1      Level 2      Level 3  

August 2008 warrants

   $ 8,014       $ —        $ —        $ 8,014   

October 2009 warrants

     11,963         —          —          11,963   

March 2011 warrants

     12,581        —          —          12,581  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total common stock warrants

   $ 32,558      $ —         $ —        $ 32,558   
  

 

 

    

 

 

    

 

 

    

 

 

 
Reconciliation of Warrant Liability Measured at Fair Value

The following table is a reconciliation of the warrant liability measured at fair value using level 3 inputs (in thousands):

 

     Warrant Liability  

Balance at December 31, 2012

   $ 32,558  

Change in fair value of common stock warrants during nine months ended September 30, 2013

     2,559  

Exercise of warrants during nine months ended September 30, 2013

     (11,327
  

 

 

 

Balance at September 30, 2013

   $ 23,790  
  

 

 

 
October 2009 offering [Member]
 
Outstanding Warrants Valuation Assumption
     September 30,
2013
    December 31,
2012
 

Risk-free interest rate

     0.10 %     0.25 %

Expected life (in years)

     1.01       1.76  

Dividend yield

     —          —     

Volatility

     56 %     98 %

Stock price

   $ 4.65     $ 4.21  
March 2011 offering [Member]
 
Outstanding Warrants Valuation Assumption
     September 30,
2013
    December 31,
2012
 

Risk-free interest rate

     0.63 %     0.72 %

Expected life (in years)

     2.46       3.21  

Dividend yield

     —          —     

Volatility

     87 %     94 %

Stock price

   $ 4.65     $ 4.21