ATS Business Model and Strategic M&A Impact

3 Disclaimer Non-IFRS Measures and Other IFRS Measures: Throughout this presentation management uses certain non-IFRS measures, non-IFRS ratios and supplementary financial measures to evaluate the performance of the Company. The terms "adjusted EBITDA", and "organic revenue", are non-IFRS measures, "adjusted EBITDA margin" and "organic revenue growth" are non-IFRS ratios, and "operating margin", "CAPEX", "Order Bookings", and "Order Backlog", are supplementary financial measures, all of which do not have any standardized meaning prescribed within International Financial Reporting Standards ("IFRS") and therefore may not be comparable to similar measures presented by other companies. Such measures should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. In addition, management uses "earnings from operations", which is an additional IFRS measure, to evaluate the performance of the Company. Earnings from operations is presented on the Company's consolidated statements of income as net income excluding income tax expense and net finance costs. Operating margin is an expression of the Company's earnings from operations as a percentage of revenues. Adjusted EBITDA is defined as earnings from operations excluding depreciation and amortization before items excluded from management's internal analysis of operating results, such as amortization expense of acquisition-related intangible assets, acquisition-related transaction and integration costs, restructuring charges, the mark-to-market adjustment on stock-based compensation and certain other adjustments which would be non-recurring in nature ("adjustment items"). Organic revenue is defined as revenues in the stated period excluding revenues from acquired companies for which the acquired company was not a part of the consolidated group in the comparable prior period. Organic revenue growth compares the stated period organic revenue with the reported revenue of the comparable period. Adjusted EBITDA margin is an expression of the Company's adjusted EBITDA as a percentage of revenues. CAPEX is defined as cash expenditures on property, plant and equipment and intangible assets. Order Bookings represents new orders for the supply of automation systems, services and products that management believes are firm. Order Backlog is the estimated unearned portion of revenues on customer contracts that are in process and have not been completed at the specified date. Following amendments to ATS' Restricted Stock Unit ("RSU") Plan in 2022 to provide for settlement in shares purchased in the open market and the creation of the employee benefit trust to facilitate such settlement, ATS began to account for equity-settled RSUs using the equity method of accounting. However, prior RSU grants which will be cash-settled and deferred stock unit ("DSU") grants which will be cash-settled are accounted for as described in the Company's annual consolidated financial statements and have significant volatility period over period based on the fluctuating price of ATS' common shares. As a result, certain Non-IFRS Financial Measures (EBITDA, adjusted EBITDA, net debt to adjusted EBITDA, adjusted earnings from operations and adjusted basic earnings per share) have been revised from previously disclosed values to exclude the impact on stock-based compensation expense of the revaluation of DSUs and RSUs resulting specifically from the change in market price of the Company's shares between periods. Management believes that this adjustment provides further insight into the Company's performance, as share price volatility drives variability in the Company's stock-based compensation expense. Earnings from operations, operating margin, adjusted EBITDA and adjusted EBITDA margin are used by the Company to evaluate the performance of its operations. Management believes that adjusted EBITDA is an important indicator of the Company's ability to generate operating cash flows to fund continued investment in its operations. The adjustment items used by management to arrive at these metrics are not considered to be indicative of the business' ongoing operating performance. Management believes that organic revenue and organic revenue growth, when considered with IFRS measures, allow the Company to better measure the Corporation's performance and evaluate long-term performance trends. Organic revenue growth also facilitates easier comparisons of the Company's performance with prior and future periods and relative comparisons to its peers. CAPEX is used by the Company as an indicator of growth. Order Bookings provide an indication of the Company's ability to secure new orders for work during a specified period, while Order Backlog provides a measure of the value of Order Bookings that have not been completed at a specified point in time. Both Order Bookings and Order Backlog are indicators of future revenues the Company expects to generate based on contracts that management believes to be firm. Management believes that ATS shareholders and potential investors in ATS use these additional IFRS measures and non-IFRS financial measures in making investment decisions and measuring operational results. Please refer to the Appendix of this presentation for a reconciliation of these non-IFRS measures to the most directly comparable IFRS measure. TM Trademarks: This presentation includes certain trademarks, which are protected under applicable intellectual property laws and are the property of the Company. Solely for convenience, our trademarks referred to in this presentation may appear without the ® or ™ symbol, but such references are not intended to indicate, in any way, that we will not assert our rights to these trademarks to the fullest extent under applicable law. All other trademarks used in this presentation are the property of their respective owners.

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