Solid Q2 2022 Earnings Presentation

3 STN TSX-NYSE A GLOBAL LEADER IN SUSTAINABILITY Global leader in sustainable engineering, design and environmental services Stantec TSX / NYSE STN Market Cap $7.0B1 EV $8.2B1 26,0001 Employees Locations 400+ offices 6 continents 1. 2. 723 As of August 26, 2022 As of June 30, 2022 3. 2022 Corporate Knights Global 100 Energy & Resources 13% Infrastructure 28% Buildings 19% #1 ranked most sustainable engineering firm in the world³ $4B 2022 TTM Net Revenue2 Water 20% Environmental Services 20%

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