EX-12.1 7 a2224901zex-12_1.htm EX-12.1
QuickLinks -- Click here to rapidly navigate through this document


Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

 
    
   Year Ended December 31,  
 
   Three Months
Ended
March 31, 2015 		 
(in thousands)
   2014   2013   2012   2011   2010  

Earnings:

                                      

Loss before income taxes

   $ (37,526 ) $ (230,674 ) $ (156,284 ) $ (9,575 ) $ (109,335 ) $ (79,743 )

Add: Fixed charges

     481     2,163     1,902     1,752     1,902     1,931  
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Total earnings

   $ (37,045 ) $ (228,511 ) $ (154,382 ) $ (7,823 ) $ (107,433 ) $ (77,812 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Fixed Charges:

                                      

Estimated interest component of rent

     481     2,163     1,902     1,752     1,902     1,931  
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Fixed charges

   $ 481   $ 2,163   $ 1,902   $ 1,752   $ 1,902   $ 1,931  
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Ratio of earnings to fixed charges

     Note 1     Note 1     Note 1     Note 1     Note 1     Note 1  

Note 1: Earnings for the three months ended March 31, 2015 and the years 2014, 2013, 2012, 2011 and 2010 were insufficient to cover fixed charges by $37.5 million, $230.7 million, $156.3 million, $9.6 million, $109.3 million and $79.7 million, respectively.



QuickLinks

Computation of Ratio of Earnings to Fixed Charges