Exhibit 12.1
Computation of Ratio of Earnings to Fixed Charges
| Year ended December 31, | ||||||||||||||||||||
| 2011 | 2012 | 2013 | 2014 | 2015 | ||||||||||||||||
Fixed charges: | ||||||||||||||||||||
Interest expense | $ | 90 | $ | 86 | $ | 82 | $ | 108 | $ | 1,365 | ||||||||||
Estimate of interest expense within rental expense | 220 | 104 | 84 | 266 | 339 | |||||||||||||||
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Total fixed charges | $ | 310 | $ | 190 | $ | 166 | $ | 374 | $ | 1,704 | ||||||||||
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Earnings before fixed charges: | ||||||||||||||||||||
Net loss before provision for income taxes | $ | (2,318 | ) | $ | (121,287 | ) | $ | (111,985 | ) | $ | (135,789 | ) | $ | (220,030 | ) | |||||
Add fixed charges | 310 | 190 | 166 | 374 | 1,704 | |||||||||||||||
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Total earnings (loss) before fixed charges | $ | (2,008 | ) | $ | (121,097 | ) | $ | (111,819 | ) | $ | (135,415 | ) | $ | (218,326 | ) | |||||
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Deficiency of earnings to cover fixed charges: | $ | (2,318 | ) | $ | (121,287 | ) | $ | (111,985 | ) | $ | (135,789 | ) | $ | (220,030 | ) | |||||
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