PitchSend

Investor Presentaiton

STN TSX NYSE EXCELLENCE INNOVATION PEOPLE GROWTH 1000 800 600 400 200 Infrastructure Front-end design and engineering services and some construction management and inspection work for private and public sector clients 28% % of Net Revenue Q2 2020 YTD Net Revenue (C$ Millions) CAGR 7.0% = 0 2017 2018 2019 LTM Q2 2020 6 Infrastructure Capability London, United Kingdom Net revenue by sector Q2 2020 YTD Net revenue by geography Q2 2020 YTD ■Bridges ■ Transit & Rail Community Development ■ Roadways ■ Global ■ Canada ■ United States

View entire presentation