Celestica, Inc.

and other factors that could cause actual outcomes and results to differ materially from conclusions, forecasts, or projections expressed in such statements. For identification and discussion of such factors and assumptions, as well as further information concerning forward-looking statements, please refer to yesterday's press release, including the cautionary note regarding forward-looking statements therein, our most recent annual report on Form 20-F, and our other public filings, which can be accessed at sec.gov and CDAR.com. We assume no obligation to update any forward-looking statement except as required by law. In addition, during this call, we will refer to various non-IFRS financial measures, including ratios based on non-IFRS financial measures consisting of non-IFRS operating margin, adjusted gross margin, adjusted return on invested capital or adjusted ROIC, adjusted free cash flow, gross debt to non-IFRS trailing 12-month adjusted EBITDA leverage ratio, adjusted earnings per share or adjusted EPS, adjusted SG&A expense, and adjusted effective tax rate. Listeners should be cautioned that references to any of the foregoing measures during this call denote non-IFRS financial measures, whether or not specifically designated as such. These non-IFRS financial measures do not have any standardized meanings prescribed by IFRS and may not be comparable to similar measures presented by other public companies that report under IFRS or who report under U.S. GAAP and use non-GAAP financial measures to describe similar operating metrics. We refer you to yesterday's press release and our Q3 2023 earnings presentation, which are available at celeska.com under the Investor Relations tab. For more information about these and certain other non-IFRS financial measures, including a reconciliation of historical non-IFRS financial measures to the most directly comparable IFRS financial measures from our financial statement, and a description of modifications to specified non-IFRS financial measures during 2022 and 2023. Unless otherwise specified, all references to dollars on this call are to U.S. dollars, and per share information is based on diluted shares outstanding. Let me now turn the call over to Rob.

Thank you, Craig. Good morning, everyone. And thank you for joining us on today's call. Salska's third quarter revenue of $2.04 billion was towards the high end of our guidance range, while our non-IFRS adjusted EPS came in at 65 cents, exceeding the high end of our guidance range. A non-IFRS operating margin of 5.7% was our 15th consecutive quarter of year-to-year non-IFRS operating margin expansion. Our CCS segment continues to benefit from improved business mix due to the strength of our Hyperscale portfolio, reflected by segment margin of 6.2% for the third quarter, the highest ever. We also saw meaningful sequential revenue growth in our HPS business. Our ATS segment delivered solid double-digit year-to-year revenue growth as we continue to see pair wins from new program ramps, as well as demand strength in our aerospace business. Sostica's strong results in the third quarter are reflective of the bullish secular trend underpinning our portfolio and our team's solid execution. Before I provide an update on each of our end markets and some color on 2024, I would like to turn the call over to Mandip, who will provide a detailed review of our third quarter financial performance and our guidance for the fourth quarter of 2023. Mandip, over to you.

Thank you, Rob, and good morning, everyone. Third quarter revenue came in at $2.04 billion towards the high end of our guidance range. Revenue was 6% higher year-over-year, supported by higher revenues in both segments, including double-digit growth in our ATS segments. Our third quarter non-IFRS operating margin of 5.7% was 60 basis points higher year-over-year. This margin expansion was driven primarily by strong profitability in our CCS segments supported by solid operational execution. Non-IFRS adjusted earnings per share for the third quarter were $0.65, exceeding the high end of our guidance range, and were $0.13 higher year over year, driven primarily by higher operating profits.