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Exhibit 12.1
STATEMENT REGARDING COMPUTATION OF RATIO OF EARNINGS
TO FIXED CHARGES
TO FIXED CHARGES
Three Months | |||||||||||||||||||||||||
Years Ended December 31, | Ended March 31, | ||||||||||||||||||||||||
2003 | 2004 | 2005 | 2006 | 2007 | 2008 | ||||||||||||||||||||
Net loss attributable to common stockholders | $ | (559 | ) | $ | (4,191 | ) | $ | (15,094 | ) | $ | (13,667 | ) | $ | (9,575 | ) | $ | (3,187 | ) | |||||||
Add: fixed charges | 7 | — | — | — | — | — | |||||||||||||||||||
Earnings as defined | (552 | ) | (4,191 | ) | (15,094 | ) | (13,667 | ) | (9,575 | ) | (3,187 | ) | |||||||||||||
Fixed charges: | |||||||||||||||||||||||||
Interest expensed | 7 | — | — | — | — | — | |||||||||||||||||||
Total fixed charges | 7 | — | — | — | — | — | |||||||||||||||||||
Ratio of earnings to fixed charges | (1 | ) | (1 | ) | (1 | ) | (1 | ) | (1 | ) | (1 | ) |
(1) | Earnings as defined for the period were insufficient to cover fixed charges by an amount equal to the net loss attributable to common stockholders for the period. |
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