#1STN TSX NYSE PIEN ORE RBC Investor Presentation > Stantec July 2022#2STN TSX NYSE Cautionary note regarding forward-looking statements and non-IFRS and other financial measures 2 Certain statements contained in this presentation constitute forward-looking information and statements within the meaning of applicable securities law (collectively, "forward-looking statements"). Forward-looking statements in this presentation include, but are not limited to: our financial targets (including our annual net revenue growth, adjusted EBITDA, and net income targets; employee count; and ROIC target), our carbon reduction pledges (including our carbon neutrality and net-zero targets), our anticipated business and geographical mix, our expectations regarding economic and industry trends in the sectors and regions in which we operate, our acquisition strategy, our capital deployment strategy, and our overall growth strategy. These statements provide information about management's current expectations and plans relating to the future. Readers are cautioned that this information may not be appropriate for other purposes. Stantec does not undertake any obligations to publicly update or revise any forward-looking statements except as required by law. By their nature, forward-looking statements require us to make assumptions and are subject to inherent risks and uncertainties. Readers are cautioned not to place undue reliance on our forward-looking statements since a number of factors could cause actual future results, conditions, actions, or events to differ materially from the targets, expectations, estimates, or intentions expressed in these forward-looking statements. Risk factors include, but are not limited to, the impacts of the COVID-19 pandemic, the risk of an economic downturn, decreased spending in the private and/or public sectors, changing market conditions for Stantec's services, and the risk that Stantec fails to capitalize on its strategic initiatives. Investors and the public should carefully consider these factors, other uncertainties, and potential events, as well as the inherent uncertainty of forward-looking statements when relying on these statements to make decisions about our company. For more information about how other material risk factors could affect our results, please refer to the Risk Factor section in our 2021 Annual Report incorporated herein by reference, by visiting EDGAR on the SEC website at sec.gov or by visiting the CSA website at sedar.com or on Stantec's website at stantec.com. In determining our forward-looking statements, we consider material factors including assumptions about the performance of the Canadian, US, and global economies in 2022 and beyond and their effect on our business. Unless otherwise indicated, all amounts expressed in Canadian dollars. This presentation contains non-IFRS and other financial measures and forward-looking statements, including a discussion of our business targets, expectations, and outlook. We caution readers not to place undue reliance on our forward-looking statements since a number of factors could cause actual future results to differ materially from the targets and expectations expressed. Non-IFRS and other financial measures do not have a standardized meaning under IFRS, and therefore, may not be comparable to similar measures presented by other issuers. For a discussion of risk factors and non-IFRS measures and other financial measures, see our 2021 Annual Report available on SEDAR, EDGAR, and stantec.com.#3EXCELLENCE INNOVATION 12 1. 2. 3 PEOPLE GROWTH STN TSX NYSE Stantec at a glance 25,000 Employees Globally 7.3% 10-Year Adjusted Diluted EPS CAGR (1) STN TSX & NYSE 400 Offices Worldwide Of Uninterrupted Profitability 65+ YEARS Adjusted diluted EPS CAGR is a non-IFRS measure (discussed in the Definitions section of Stantec's Q1 2022 MD&A) June 30, 2022 CA$6.2B (2) Market Capitalization#4st 4 EXCELLENCE PEOPLE INNOVATION GROWTH STN TSX-NYSE Engineering, Architecture and Environmental Services BUSINESS OPERATING UNITS (TTM Q1 2022 Net Revenue) INFRASTRUCTURE $1,056M WATER $795M BUILDINGS $752M ENVIRONMENTAL ENERGY & RESOURCES SERVICES $688M $518M Signatory to the UN Global Compact Stantec is a signatory to the UN Global Compact and partners with clients to promote the achievement of the UN's Sustainable Development Goals SUSTAINABLE DEVELOPMENT GOALS#55 EXCELLENCE STN TSX-NYSE INNOVATION PEOPLE GROWTH Infrastructure Stantec's Infrastructure group is a leader in transport system design and community development. We design infrastructure to be accessible, sustainable, resilient, and people-friendly, Our team is focused on reducing the environmental and social impacts of major infrastructure builds that, historically, have been sited in lower income areas and contribute to societal inequity. 28% of Q1 2022 net revenue Q1 2022 Net revenue by sector Roadways ■Community Dev Transit & Rail Bridges Q1 2022 Net revenue by geography ■ United States ■ Canada ■Global#616 EXCELLENCE STN TSX NYSE Water INNOVATION PEOPLE GROWTH Q1 2022 Net revenue by sector Our Water group designs water projects that improve the health and quality of life across communities and build resilience to natural disasters and climate change We help communities attain sustainable access to safe, affordable, and reliable drinking water and sanitation. 20% of Q1 2022 net revenue ■Water Treatment ■Conveyance ■ Water Resources ■ Wastewater Treatment ■Stormwater Enterprise Systems Stantec is a recognized global leader in the design of water and wastewater treatment facilities. Q1 2022 Net revenue by geography ■ United States ■ Canada ■Global#77 STN TSX NYSE GROWTH Buildings Stantec's Buildings group provides consulting and design services for built, natural, and organizational environments. INNOVATION PEOPLE We guide clients through a process that incorporates sustainable, resilient, and healthy building design. Stantec is a leader in net-zero design and adaptive re-use of built environments, both of which are essential to meet global emission reduction targets. 19% of Q1 2022 net revenue Q1 2022 Net revenue by sector Commerical ■ Healthcare ■ Civic ■ Education ■ Industrial Airports Workplace Q1 2022 Net revenue by geography EXCELLENCE ■ United States ■ Canada ■ Global#88 EXCELLENCE INNOVATION PEOPLE GROWTH STN TSX-NYSE Environmental Services Stantec's Environmental Services group provides a wide array of conservation, ecosystem restoration, and sustainability services. Collaborates with our other business operating units to preserve environmental and social resources. net revenue Performs permitting services that enable traditional development while minimizing environmental impacts. 2021 Net revenue by sector 20% of Q1 2022 ■ Water ■ Oil & Gas ■ Buildings ■ Power & Dams Transportation ■Community Dev ■Mining Q1 2022 Net revenue by geography ■ United States ■ Canada ■ Global#99 EXCELLENCE INNOVATION PEOPLE GROWTH STN TSX-NYSE Energy & Resources Stantec's Energy & Resources group delivers utility-scale and microgrid renewable energy generation engineering and design services. We design for increasingly severe weather events and remedy existing grid limitations. 13% of Q1 2022 net revenue Q1 2022 Net revenue by sector ■ Power ■Mining ■ Oil & Gas ■Waterpower & Dams We have also worked on some of the largest renewable energy installations in the world Q1 2022 Net revenue by geography ■ United States ■ Canada ■Global#1010 A GLOBAL LEADER IN SUSTAINABILITY STN TSX NYSE Committed to sustainability#1111 LEADERS IN SUSTAINABILITY STN TSX NYSE Notes: A global leader in sustainable engineering & design Corporate Knights Global 100: #17 Ranked the most sustainable design and engineering firm in the world Net Zero Carbon neutral for 2022 2030 emission targets validated by SBTi CDP (1) Score 2021 2020 2019 A- A- A- Corporate Knights Best 50 Corporate Citizens in Canada: #6 Ranked among the best Canadian companies focused on ESG for the 13th time ISS ESG (2) Quality Score E S G 1 1 1 1st globally to link metrics. to Bloomberg GEI Sustainability- Linked Loan 1st in Canada to direct interest savings to communities Sustainalytics (3) ESG Risk Rating Low (1) CDP Website - July 5, 2022 (2) ISS Sustainability Suite - July 1, 2022 (3) Sustainalytics website - July 5, 2022#1212 A GLOBAL LEADER IN SUSTAINABILITY STN TSX-NYSE Stantec advances strategies for sustainability Focus on sustainability for our key stakeholders including employees, investors, clients and communities where we live GROSS REVENUE ALIGNED TO UN SUSTAINABLE DEVELOPMENT GOALS 2021 2020 2019 CLEAN WATER AND SANITATION $- $1,000 $2,000 Gross Revenue (CA$ millions) 53% 49% 45% 7 AFFORDABLE AND INDUSTRY, INNOVATION CLEAN ENERGY AND INFRASTRUCTURE 11 SUSTAINABLE CITIES AND COMMUNITIES 15 ON LAND LIFE Other ::::: MMUNITIES & BUILDING TRANSPORT VULNERABILITY GOAL SETTING ENERGY TRANSITION BENCHMARKING EMISSIONS GHG EMI MITIGATION CLIMATE SOLUTIONS CLIMATE ADAPTATION PLANNING ENGINEERED SOLUTIONS TY & RISK - MITIG R-ENERGY NEXUS MODELING ENGAGEMENT NATURE-BASED SOLUTIONS STAKEHOLDE#1313 A GLOBAL LEADER IN SUSTAINABILITY STN TSX-NYSE Governance A diverse board with exceptional backgrounds Certified Integrated Management System: • • . • • . • Environmental Management (ISO 14001:2015) Occupational Health & Safety Management (ISO 45001:2018) Information Security System (ISO 27001:2013) Quality Management (ISO 9001:2015) IT Service Management System (ISO 20000-1:2018) Business Continuity Planning Pandemic Preparedness Internal Practice Audits Robust IT security processes and practices: Next-generation security systems Cybersecurity awareness training for employees Compliance with privacy laws including the General Data Protection Regulation (European Union) and Cyber Essentials Plus (United Kingdom) Board Composition and Experience Sustainability Governance Structure Environmental and Social Factors 78% highly experienced 22% general experience Governance Factors 100% highly experienced Board Sustainability and Safety Committee Functional Service Teams Executive ESG Committee Vice President, Corporate Sustainability SDG Impact Leader Sustainability Services#1414 A GLOBAL LEADER IN SUSTAINABILITY STN TSX-NYSE Social leadership Community Engagement (CE) $60M by 2030 Committed to investing a further $30 million through our CE program, taking our total to $60 million since starting our CE program in 2007 5,600+ Global community partnerships in the history of our CE program $611K Grants for STEM in 2021 $800K+ Scholarships funded in 2021 $200K Annual Equity & Diversity Scholarship launched in 2021 Inclusion & Diversity We support I&D through partnerships to gain access to top talent from BIPOC communities, sponsoring scholarships and internships for underrepresented and underprivileged students, and through reviewing our internal practices to identify and remove bias. Named on the 2022 Bloomberg Gender Equality Index Participated in the UNGC Target Gender Equality Program and tracked progress against the Women's Empowerment Principles in alignment with SDG #5 Gender Equality Signatory to the UN Women Empowerment Principles since 2015 C-suite is 38% female and 25% are people of color Gender Pay Equity A review of our pay practices found that women have received higher average pay increases since 2018, and are being promoted at a higher rate, than men during the same period. 4% Base pay gap on a median compa ratio basis in North America Voluntary Turnover ~3% lower than industry average Top 50 Workplaces for Indigenous STEM Professionals American Indian Science and Engineering Society The World's Top Female Friendly Companies 2021 Forbes America's Best Employers for Women 2021 Forbes Gender- Equality Index 2022 Bloomberg#1515 Q1 2022 STN TSX NYSE Q1 2022 Financial performance CPS Energy Headquarters San Antonio, Texas, US#1616 Q1 2022 STN TSX-NYSE Solid Q1 2022 earnings Net Revenue $1,050 M ▲ 19.5% Adj EBITDA (1) | Margin $152M 14.5% EPS Adj Diluted (1) | Diluted $0.61 $0.40 | | | ▲ 17.9% ▲ 22.0% (Adjusted) KEY DRIVERS Re-shoring of strategic domestic production to strengthen local supply chain resilience Increased earnings on the strength of: ● 6.4% organic net revenue growth (1) 13.9% acquisition net revenue growth (1) • 54.0% project margin (1) Adjusted diluted EPS, Adjusted EBITDA, organic growth, and acquisition growth are non-IFRS and other financial measures (discussed in the Definitions section of Stantec's Q1 2022 Quarter Report) Climate change and sustainability Global food security Energy transition#17STN TSX-NYSE Q1 2022 Other Financial Highlights Quarterly and TTM Operating cash flow ($) (1) $703 $530 $468 Capital returned to shareholders ($) (1) $69 $51 $47 $397 $347 $29 $162 $17 $18 $18 $56 $78 $101 $6 $17 $18 $18 $18 $18 Q1 2022 Q1 2021 Cash from Ops Q2 2021 Q3 2021 Q4 2021 Cash from Ops (TTM) Q1 2022 Q1 2021 Q2 2021 Q3 2021 Q4 2021 Q1 2022 Dividends Share Buybacks 17 Net debt to adjusted EBITDA (1) Target range 1.0 - 2.0x Days sales outstanding (1) 81 1.8 1.8 75 76 75 75 0.8 0.9 0.8 Q1 2021 Q2 2021 Q3 2021 Q4 2021 Q1 2022 Q1 2021 Q2 2021 Q3 2021 Q4 2021 Q1 2022 (1) Dollars in millions except net debt to adjusted EBITDA; net debt to adjusted EBITDA and days sales outstanding are non-IFRS measures discussed in the Definitions section of the Q1 2022 MD&A.#18STN TSX-NYSE EXCELLENCE INNOVATION PEOPLE GROWTH Recent acquisitions will drive synergistic revenue growth Three acquisitions in the United States support sustainability, climate and environmental solutions. Paleo's archeological expertise is in demand by the energy industry. Card no increases our presence in Environmental Services 60%. Cox McLain provides us with environmental compliance and planning in Texas. Continued growth in Europe Driven by Values in the Netherlands helps public and private clients navigate the energy transition Barton Willmore in the UK strengthens our delivery expertise in master planning and urban design Three acquisitions in Australia enhance our exposure to this strong economy. GTA expands our presence in transportation advisory, planning, analytics, engineering, and technical design. Engenium enhances our exposure to Australia's most influential mining, resources, renewable energy and industrial infrastructure clients. Cardno doubles the size of Stantec's presence in Australia and provides us with the critical mass and diversity to accelerate our growth in this market. ∞ 18#1919 2022 OUTLOOK STN TSX-NYSE 2022 Outlook Strong trends back robust multi-year growth outlook Targets Net revenue growth Adjusted EBITDA as % of net revenue (1) 2022 Annual Range Geography United States 18% to 22% 15.3% to 16.3% Adjusted net income as % of net revenue(1) At or above 7.5% Canada Adjusted ROIC(1) Above 10.5% . 2022 regional outlook High single digit organic growth Record backlog US stimulus spending in H2 2022 • Low single-digit organic growth Reflecting high levels of activity carrying over from 2021 High-single to low double digit organic growth Strong economic recovery Stimulus funds (1) Adjusted EBITDA, adjusted net income, adjusted ROIC, and adjusted diluted EPS are non-IFRS and other financial measures (discussed in the Definition section of our 2021 Annual Report). Global 2022 Adjusted diluted EPS(1) expected to grow by 22% to 26%#20STN TSX-NYSE 20 20 Gregory County Pumped Storage Iowa, United States Q&A