Revenue, Excluding Billable Expenses, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Diluted EPS are not recognized measurements under accounting principles generally accepted in the United States, or GAAP, and when analyzing our performance or liquidity, as applicable, investors should (i) evaluate each adjustment in our reconciliation of revenue to Revenue Excluding Billable Expenses, net income to Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Diluted Earnings Per Share, (ii) use Revenue, Excluding Billable Expenses, Adjusted EBITDA, and Adjusted EBITDA Margin, Adjusted Net Income, and Adjusted Diluted EPS in addition to, and not as an alternative to, revenue, net income or diluted EPS, as measures of operating results, each as defined under GAAP.