In deriving non-GAAP operating expenses from GAAP operating expenses, we exclude stock-based compensation charges and amortization of intangible assets. In deriving non-GAAP income (loss) from operations from GAAP income (loss) from operations, we exclude stock-based compensation charges and amortization of intangible assets. In deriving non-GAAP net income (loss) from GAAP net income (loss), we further exclude loss on extinguishment of debt and gain on the embedded derivative. Stock-based compensation charges, amortization of intangible assets, loss on extinguishment of debt, and gain on the embedded derivative represent charges that recur in amounts unrelated to the Company’s operations.

The non-GAAP financial measures we provide have certain limitations because they do not reflect all of the costs associated with the operation of our business as determined in accordance with GAAP. Non-GAAP operating expenses, non-GAAP income (loss) from operations and non-GAAP net income (loss) are in addition to, and are not a substitute for or superior to, operating expenses, income (loss) from operations and net income (loss), which are prepared in accordance with GAAP and may be different from non-GAAP measures used by other companies. A detailed reconciliation of the non-GAAP measures to the most directly comparable GAAP measure is set forth below. Investors are encouraged to review these reconciliations to appropriately incorporate the non-GAAP measures and the limitations of these measures into their analyses. For complete information on stock-based compensation, amortization of intangible assets, loss on extinguishment of debt, and the change in the fair value of our embedded derivatives, please see our Form 10-Q for the quarterly period ended March 31, 2014 and Form 10-K for the year ended September 30, 2013.