Exhibit 12.1

STATEMENT REGARDING COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO

OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

(in thousands, except ratios)

The following table sets forth our ratio of
earnings to fixed charges and our ratio of earnings to combined fixed charges and preferred stock dividends for the years ended December 31, 2006, 2007, 2008, 2009, and 2010. As the ratios of earnings to fixed charges and earnings to combined
fixed charges and preferred stock dividends indicate less than one-to-one coverage for the years ended December 31, 2007, 2008, 2009, and 2010, we have provided the coverage deficiency amounts. Earnings are the sum of (i) loss from
continuing operations before losses from equity affiliates, and (ii) amortization of capitalized interest, less (i) interest capitalized. Fixed charges are the sum of (i) interest expensed and capitalized, and (ii) amortization
of capitalized expenses related to indebtedness.



|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|---------------------------------------------------------------------------------------------- |  | ----------------------- | ----- |  | ---- | - | ------- | ---- |  | - | ------- | - |  | ---- | ------- | - |  | - | ------- | -
|                                                                                               |  | Year Ended December 31, |      
|                                                                                               |  | 2006                    |       |  | 2007 |   |         | 2008 |  |   | 2009    |   |  | 2010 |        
|Income (loss) from continuing operations before income tax *                                   |  | $                       | 2,352 |  |      | $ | (39,100 | )    |  | $ | (29,181 | ) |  | $    | (24,135 | ) |  | $ | (16,911 | )
|Plus: Amortization of capitalized interest                                                     |  |                         | 372   |  |      |   | 287     |      |  |   | 255     |   |  |      | 179     |   |  |   | 1,538   |  
|Less: Interest capitalized                                                                     |  |                         | 1     |  |      |   |        |      |  |   |        |   |  |      |        |   |  |   | 1,455   |  
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|Earnings, as adjusted                                                                          |  | $                       | 2,723 |  |      | $ | (38,813 | )    |  | $ | (28,926 | ) |  | $    | (23,956 | ) |  | $ | (16,828 | )
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|Fixed charges                                                                                  |  |                         | 372   |  |      |   | 286     |      |  |   | 255     |   |  |      | 179     |   |  |   | 1,538   |  
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|Total fixed charges                                                                            |  | $                       | 372   |  |      | $ | 286     |      |  | $ | 255     |   |  | $    | 179     |   |  | $ | 1,538   |  
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|Preferred stock dividends                                                                      |  |                         |      |  |      |   |        |      |  |   |        |   |  |      |        |   |  |   |        |  
|Ratio of earnings to fixed charges                                                             |  |                         | 7.32  |  |      |   |        |      |  |   |        |   |  |      |        |   |  |   |        |  
|Ratio of earnings to combined fixed charges and preferred stock dividends                      |  |                         | 7.32  |  |      |   |        |      |  |   |        |   |  |      |        |   |  |   |        |  
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|Deficiency of earnings available to cover fixed charges                                        |  |                         |      |  |      | $ | (38,527 | )    |  | $ | (28,671 | ) |  | $    | (23,777 | ) |  | $ | (15,290 | )
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  
|Deficiency of earnings available to cover combined fixed charges and preferred stock dividends |  |                         |      |  |      | $ | (38,527 | )    |  | $ | (28,671 | ) |  | $    | (23,777 | ) |  | $ | (15,290 | )
|                                                                                               |  |                         |       |  |      |   |         |      |  |   |         |   |  |      |         |   |  |   |         |  



|* | Excluding losses from minority interest and income/loss from equity investees.
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