We create communities. We are Stantec.

Q2 2016 Earnings Conference Call Thursday, August 4, 2016

Cautionary Statement Our public communications will contain non-IFRS measures and written or verbal forward-looking statements, including a discussion of our goals and our growth strategies. 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. For a discussion of risk factors and non-IFRS measures, see our 2015 Annual Report, which is available on SEDAR, EDGAR, and www.stantec.com.

Agenda Bob Gomes • Highlights from the Quarter

Dan Lefaivre • Summary of Financial Results

Bob Gomes • Business Overview

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• Steady organic gross revenue growth in Infrastructure and US operations

Highlights from the Quarter

We are Better Together

• Positioned us as a leader in water and natural resources sectors • Expanded geographic footprint • Created a strong foundation for continued sustainable growth

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Financial Results

Q2 16 Results

In millions of Canadian dollars except for adjusted diluted EPS and percentages

*As a % of net revenue ** Non-IFRS measure defined in Q2 16 Management’s Discussion and Analysis

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Q2 16 Q2 15 Q2 16 vs. Q2 15

Gross revenue $1,046.6 $710.3 47.3%

Gross margin* 53.6% 54.0% (30.0%)

Administrative & marketing* 43.9% 41.2% 39.5%

Adjusted EBITDA** $84.6 $75.8 11.6%

Net income $21.2 $43.1 (50.8%)

Adjusted EPS (diluted)** $0.37 $0.45 (17.8%)

Net debt/EBITDA** 3.25 1.18 -

$3.9B BACKLOG

$3.0B CONSULTING

SERVICES

$0.9B CONSTRUCTION

SERVICES

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• Gross revenue $140.7 million since close of MWH acquisition • UK revenue $58.0 million and US revenue $82.7 million • Activity in US waste water projects and UK AMP6 programs

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Construction Services GROSS REVENUE BREAKDOWN

BY GEOGRAPHY GROSS REVENUE BREAKDOWN

BY CLIENT TYPE

Business Overview

MWH WATER & NATURAL

RESOURCES INFRASTRUCTURE

CONSTRUCTION SERVICES

GLOBAL REACH

GROSS REVENUE

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Timeline

2016

Review segments of MWH’s business

2017

Integration of MWH into our Consulting Services business

2017

Ongoing integration and review of Global

operations

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Acquisitions

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Consulting Services YTD Consulting Services YTD

• MWH added gross revenue to Infrastructure, Energy & Resources, and Environmental Services

Buildings

• Gross revenue essentially flat in Q2 16 vs. Q2 15 and up 7.9% year to date • Actively pursuing several design-build P3 projects • Revised outlook from moderate organic gross revenue growth to stable

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Percent of Q2 16 YTD gross revenue

Energy & Resources

• Gross revenue increased 2.3% in Q2 16 vs. Q2 15 with MWH acquisition • Organic gross revenue retraction of 29.0% in Q2 16 vs. Q2 15 • Continue to win smaller oil and gas projects • Organic revenue growth in US Power and Mining, offset by organic

retraction in Canada

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Percent of Q2 16 YTD gross revenue

Environmental Services

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• Gross revenue increased 14.8% in Q2 16 vs. Q2 15 with MWH acquisition • Organic gross revenue retraction of 6.0% in Q2 16 vs. Q2 15 • Opportunities for growth in Power sector in Canada and the US • Opportunities in water, transportation, and wastewater projects • Revised outlook from stable organic gross revenue growth to retraction

Percent of Q2 16 YTD gross revenue

Infrastructure

• Gross revenue increased 63.1% in Q2 16 vs. Q2 15 with MWH acquisition • Organic gross revenue growth of 5.3% in Q2 16 vs. Q2 16 and 6.9% year to date • Opportunities in US light rail transit, roadways, and bridges

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Percent of Q2 16 YTD gross revenue

• Gross revenue decreased 12.2% in Q2 16 vs. Q2 15 • Moderate growth in Infrastructure; Buildings remained stable; Energy &

Resources and Environmental Services retracted • Public infrastructure investment is robust; strong growth in Water

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Canada

• Gross revenue up 46.4% in Q2 16 vs. Q2 15 • Continued organic gross revenue growth of 3.7% in Q2 16 vs. Q2 15 • Growth in Infrastructure, Power, and design-build opportunities

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United States

• Gross revenue up by $73.0 million in Q2 16 vs. Q2 15 • Organic gross revenue retraction in Mining and Buildings • Strong activity in UK Water

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Global

Q&A