Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements

v2.4.0.8
Fair Value Measurements
 12 Months Ended
Dec. 31, 2013
Fair Value Measurements [Abstract]  
Fair Value Measurements
6.
Fair Value Measurements

Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company applies ASC 820, which establishes a framework for measuring fair value and a fair value hierarchy that prioritizes the inputs used in valuation techniques. ASC 820 describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value which are the following:

Level 1 – Quoted prices in active markets for identical assets or liabilities.

Level 2 – Observable inputs other than quoted prices in active markets for similar assets or liabilities.

Level 3 – Unobservable inputs.

The following tables set forth the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2013 and 2012 are classified as follows (in thousands):

   
Fair Value Measurements at December 31, 2013 Using
        
   
Quoted Prices in
Active Markets
for Identical
Assets
    
Significant
Other
Observable
Inputs
    
Significant
Unobservable
Inputs
        
   
(Level 1)
    
(Level 2)
    
(Level 3)
    
Total
  
Assets:
                        
Money market funds (1)
  $ 82,759     $ -     $ -     $ 82,759  
U.S. treasury securities
     19,989       -       -       19,989  
Foreign exchange options
     -       361       -       361  
Total
   $ 102,748     $ 361     $ -     $ 103,109  
                                 
Liabilities:
                                
Contingent warrant liabilities
   $ -     $ -     $ 69,869     $ 69,869  
 
   
Fair Value Measurements at December 31, 2012 Using
          
   
Quoted Prices in
Active Markets
for Identical
Assets
    
Significant
Other
Observable
Inputs
    
Significant
Unobservable
Inputs
          
   
(Level 1)
    
(Level 2)
    
(Level 3)
    
Total
  
Assets:
                                
Money market funds (1)
  $ 37,461     $ -     $ -     $ 37,461  
U.S. treasury securities
     39,987                       39,987  
Foreign exchange options
     -       488       -       488  
Total
   $ 77,448     $ 488     $ -     $ 77,936  
                                 
Liabilities:
                                
Contingent warrant liabilities
   $ -     $ -     $ 15,001     $ 15,001  

(1)
Included in cash and cash equivalents

The fair value of the foreign exchange options at December 31, 2013 and 2012 was determined using readily observable market inputs from actively quoted markets obtained from various third-party data providers. These inputs, such as spot rate, forward rate and volatility have been derived from readily observable market data, meeting the criteria for Level 2 in the fair value hierarchy.

The fair value of the contingent warrant liabilities at December 31, 2013 and 2012 was determined using the Black-Scholes Model, which requires inputs such as the expected term of the warrants, volatility and risk-free interest rate. These inputs are subjective and generally require significant analysis and judgment to develop. In 2013, the Company changed its expected volatility assumption in the Black-Scholes Model from a volatility implied from warrants issued by XOMA in recent private placement transactions to a volatility based on historical stock price volatility observed on XOMA’s underlying stock. A historical stock price volatility rate was determined to be a more precise indicator for the fair value calculation of the Company’s warrants due to time elapsed since these warrants were granted.

The fair value of the contingent warrant liabilities was estimated using the following range of assumptions at December 31, 2013 and 2012:

   
December 31,
2013
    
December 31,
2012
  
Expected volatility
     66.1% - 86.6 %     40 %
Risk-free interest rate
     0.1% - 0.8 %     0.3% - 0.7 %
Expected term
  
0.9 - 3.2 years
    
1.9 - 4.2 years
  

The following table provides a summary of changes in the fair value of the Company’s Level 3 financial liabilities for the years ended December 31, 2013, 2012 and 2011 (in thousands):
   
Warrant
Liabilities
  
Balance at December 31, 2010
   $ 4,245  
Net decrease in fair value of contingent warrant liabilities upon revaluation
     (3,866 )
Balance at December 31, 2011
     379  
Initial fair value of warrants issued in March 2012
     6,390  
Reclassification of contingent warrant liability to equity upon exercise of warrants
     (940 )
Net increase in fair value of contingent warrant liabilities upon revaluation
     9,172  
Balance at December 31, 2012
     15,001  
Reclassification of contingent warrant liability to equity upon exercise of warrants
     (6,171 )
Net increase in fair value of contingent warrant liabilities upon revaluation
     61,039  
Balance at December 31, 2013
   $ 69,869