Exhibit 12.1
Statement re Computation of Ratio to Fixed Charges and Preference Dividends
| | For the Year Ended December 31, | |
| | 2012 | | 2013 | | 2014 | | 2015 | |
| | (in thousands) | |
Earnings: | | | | | | | | | |
Loss before income taxes | | $ | (33,855 | ) | $ | (39,890 | ) | $ | (31,950 | ) | $ | (47,344 | ) |
Add: Fixed charges | | 340 | | 3,241 | | 6,323 | | 5,480 | |
Deficiency of earnings to fixed charges | | $ | (33,515 | ) | $ | (36,649 | ) | $ | (25,627 | ) | $ | (41,864 | ) |
| | | | | | | | | |
Fixed Charges: | | | | | | | | | |
Interest expense | | $ | 6 | | $ | 2,934 | | $ | 6,016 | | $ | 5,167 | |
Estimated interest portion of rent expense (1) | | 334 | | 307 | | 307 | | 313 | |
Total fixed charges | | $ | 340 | | $ | 3,241 | | $ | 6,323 | | $ | 5,480 | |
| | | | | | | | | |
Ratio of earnings to fixed charges | | n/a | | n/a | | n/a | | n/a | |
(1) Represents the estimated portion of operating lease rental expense that is considered by us to be representative of interest, which approximates one-third of the related total operating lease expense.
Earnings were insufficient to cover combined fixed charges by $33.5 million, $36.6 million, $25.6 million, and $41.9 million for the years ended December 31, 2012, 2013, 2014 and 2015, respectively.
For the periods indicated above, we had no outstanding shares of preferred stock with required dividend payments. Therefore, the ratio of earnings to fixed charges for preferred stock dividends are identical to the ratios presented in the tables above.