Investor Presentaiton

Non-GAAP Measures • Adjusted net income and earnings per share ("EPS") - The Company believes that modifying its 2023 and 2022 net income and diluted EPS provides additional measures which are representative of the Company's underlying performance and improves the comparability of results between reporting periods. During the three months ended March 31, 2023 and 2022, adjustments were made to reported GAAP net income and diluted EPS to exclude the impact of acquisition and integration-related expenses. Adjusted EBITDA and adjusted EBITDA margin - The Company uses adjusted EBITDA and the ratio of adjusted EBITDA to net sales ("adjusted EBITDA margin"), at both the consolidated and segment level, as additional measures which are representative of its underlying performance and to improve the comparability of results across reporting periods. We believe that investors use versions of these metrics in a similar manner. For these reasons, the Company believes that adjusted EBITDA and adjusted EBITDA margin, at both the consolidated and segment level, are meaningful metrics to investors in evaluating the Company's underlying financial performance. Consolidated adjusted EBITDA is a non-GAAP measure that represents the total of net income, interest expense, acquisition and integration-related expenses, other expense/income, income tax expense/benefit, and depreciation and amortization expense. Consolidated adjusted EBITDA margin is a non-GAAP measure that represents the total of net income, interest expense, acquisition and integration-related expenses, other expense/income, income tax expense/benefit, and depreciation and amortization expense divided by net sales for the applicable period(s). Segment adjusted EBITDA is a non-GAAP measure that represents the total of segment operating income, acquisition and integration-related expenses, and depreciation and amortization expense, as applicable. Segment adjusted EBITDA margin is a non-GAAP measure that represents the total of segment operating income, acquisition and integration-related expenses, and depreciation and amortization expense, as applicable, divided by net sales for the applicable period(s). Segment operating income includes all revenues, costs and expenses directly related to the segment involved. In determining segment income, neither corporate nor interest expenses are included. Segment depreciation and amortization expense relates to those assets, both tangible and intangible, that are utilized by the respective segment. Other companies may use different methods to calculate adjusted EBITDA and adjusted EBITDA margin. FEDERAL SIGNAL 17 17

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