Adjusted EBITDA excludes interest income, interest expense, income taxes and loss on early extinguishment of debt because these items are associated with our capitalization and tax structures. Adjusted EBITDA also excludes depreciation and amortization expense because these non-cash expenses reflect the impact of prior capital expenditure decisions which are not indicative of future capital expenditure requirements. Adjusted EBITDA excludes non-cash stock compensation expense, because these items are non-cash expenses and loss on derivative instrument and disposal of assets because these are not related to our primary operations.
We use Adjusted EBITDA in conjunction with traditional GAAP operating performance measures as part of our overall assessment of our performance and we do not place undue reliance on this measure as our only measure of operating performance. Adjusted EBITDA should not be considered a substitute for other measures of financial performance reported in accordance with GAAP.
FINANCIAL TABLES TO FOLLOW
DigitalGlobe, Inc. Condensed Consolidated Statements of Operations Three Months Ended Year Ended December 31, December 31, ------------------ ------------------ (in millions, except per share data) 2009 2010 2009 2010 ------------------------------------ -------- -------- -------- -------- Historical results of operations: (unaudited) Defense and Intelligence revenue $ 57.5 $ 63.2 $ 231.0 $ 252.1 Commercial revenue 15.4 20.4 50.9 70.1 -------- -------- -------- -------- Total revenue 72.9 83.6 281.9 322.2 Cost of revenue excluding depreciation and amortization 8.9 10.5 31.1 41.7 Selling, general and administrative 23.0 31.3 88.6 112.5 Depreciation and amortization 18.2 29.6 74.4 118.9 -------- -------- -------- -------- Income from operations 22.8 12.2 87.8 49.1 Loss from early extinguishment of debt - - (7.7) - Loss on derivative instruments - - (1.8) - Interest income (expense), net - (9.0) 0.1 (39.6) -------- -------- -------- -------- Income before income taxes 22.8 3.2 78.4 9.5 Income tax expense (9.0) (1.9) (31.0) (5.4) -------- -------- -------- -------- Net income $ 13.8 $ 1.3 $ 47.4 $ 4.1 ======== ======== ======== ======== Earnings per Share: Basic earnings per share $ 0.32 $ 0.03 $ 1.07 $ 0.09 Diluted earnings per share $ 0.30 $ 0.03 $ 1.06 $ 0.09 Weighted average common shares outstanding Basic 43.2 45.9 44.2 45.7 Diluted 45.6 46.4 44.9 46.1