Q4 and Full-Year 2020 Financial Performance

10 Q4 2020 STN TSX-NYSE Global $1,000 $500 Gross and net revenue ($ millions) Backlog $856 $836 $654 $651 $0.8 Billion $214 $208 $162 $156 $0 Q4 2019 Q4 2020 2019 2020 Gross Revenue Net Revenue Q4 Project Wins • • • West Africa's Regional Transport Governance Project The European Commission selected Stantec to support Ghana in enhancing the stability and security of the movement of goods and people across West Africa SEQwater's Somerset Dam Dam improvement project in Queensland, Australia. ⚫ Kiritimati Island Port - With support of European Union Preparation and conceptual design of multi-purpose port. Warragamba Dam Warragamba, New South Wales, Australia

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