About This Report Sustainability Reporting at TMX This report presents information on TMX Group Limited始s sustainability strategy and its performance related to environmental, social and governance issues for the financial year ended December 31, 2025. Throughout the report, 鈥淭MX Group,水 鈥淭MX水 or 鈥渨e水 or 鈥渦s水 or 鈥渙ur水 refers to TMX Group Limited. In the pages that follow, we detail the progress we made in 2025 on implementing TMX始s sustainability strategy, fulfilling our commitment to measuring and regularly reporting social and environmental impacts, and in particular, to continuing to improve the quality of our data. We regularly monitor the development of sustainability reporting regulations, standards and frameworks for their relevance and usability, along with the expectations of our stakeholders regarding these standards. Our disclosures are informed by and aligned with the Task Force on Climaterelated Financial Disclosures (TCFD), the Sustainability Accounting Standards Board (SASB) and our reconciliation tables can be found in Appendix C and H. In this report, we published our first science-aligned emissions reduction targets using the methodology set out in the Science Based Targets initiative (SBTi) Corporate Net-Zero Standard V2 (Draft)1. We also continued refining our carbon emission accounting exercise by further improving inventory quality and quantification processes as set out in the Planet section. We also maintained our participation in the annual S&P Global Corporate Sustainability Assessment and CDP Corporate Questionnaire. The performance data footnotes include commentary regarding recalculations or data changes, where applicable. All amounts in this document are in Canadian dollars unless otherwise noted. Certain sections of this report may contain forward-looking information as detailed in Endnotes. Additional Resources This report is focused on the performance, activities and operations of TMX Group that support our sustainability strategy. It complements information on the results of our operations and financial condition in our 2025 Annual Report and our governance and executive compensation information in our 2026 Management Information Circular. Our sustainability reports from previous years are available under our Sustainability at TMX page. REPORT CONTENTS ABOUT THIS REPORT SUSTAINABILITY STRATEGY SUSTAINABILITY GOVERNANCE PROSPERITY PLANET PEOPLE APPENDICES 4 | TMX GROUP 2025 ANNUAL SUSTAINABILITY REPORT 1 SBTi Corporate Net-Zero Standard Version 2.0, Draft for Second Public Consultation, November 2025
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