Our GHG Emissions In 2025, we remained focused on improving the manner in which we measure our emissions and on continuously improving the quality of our data. With the support of a third-party service provider, we inventoried our 2025 carbon emissions in accordance with the Greenhouse Gas Protocol Corporate Standard (鈥淕HG Protocol始始) and, with the goal of setting emissions reductions targets in mind, we have further aligned our scope 3 reporting with the GHG Protocol Corporate Value Chain Scope 3 Standard. In preparation for setting emissions reduction targets that are aligned with the latest climate science and the methodology set out in the draft SBTi Corporate Net-Zero Standard V2, we implemented various methodological refinements to our carbon accounting practices. Our organizational boundaries were updated to reflect the acquisitions of ETF Stream and Verity on June 17 and October 1, 20259, respectively, and the emissions associated with these new entities were included in this inventory. The most significant changes result from the inclusion of more granular and expanded datasets and the growing integration of activity and supplier-specific data, as well as year-over-year expense growth. These combined changes have led us to recalculate our 2024 and 2023 figures to ensure year-over-year data is comparable. The inventory summary includes Scope 1, Scope 2 and Scope 3 emissions from the categories applicable to TMX10. We follow the 鈥渙perational control水 consolidation approach of the GHG Protocol to determine our GHG accounting boundary which includes all known TMX offices and facilities. INVENTORY CATEGORY ACTIVITY (tCO2e) 2025 2024 2023 % VARIATION FROM 2024 Scope 1 Stationary Combustion 80 95 110 -16% Scope 2 (Market-Based) Electricity 2,417 2,225 2,368 9% Scope 3 Indirect Emissions 22,647 20,118 17,877 13% Total Gross Emissions (Market-Based) 25,144 22,439 20,354 12% Emissions Intensity tCO2e per Headcount 10.8 10.0 10.5 8% tCO2e per Revenue ($ million) 11 14.6 15.4 17.0 -5% 2025 Carbon Emissions by Scope Scope 1 Scope 2 Scope 3 REPORT CONTENTS ABOUT THIS REPORT SUSTAINABILITY STRATEGY SUSTAINABILITY GOVERNANCE PROSPERITY PLANET PEOPLE APPENDICES 17 | TMX GROUP 2025 ANNUAL SUSTAINABILITY REPORT 9 TMX Group, TMX VettaFi Acquires ETF Stream [Press Release], 2025-06-17 and TMX Group Acquires Verity [Press Release], 2025-10-01 10 A comprehensive view of our inventory, inclusive of detailed methodological changes is provided in Appendix D. 11 TMX Group reported 2025 revenue, p.16 of our 2025 Annual Report. 90.1% 9.6% 0.3%
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