Overview

August 2018

Our Guiding Principles

We value our people and our reputation.

We are locally dedicated with international scale.

We are future-focused and challenge the status quo.

We foster collaboration in everything we do.

We have an empowering culture and hold ourselves accountable.

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We are Our Brand3

WSP is…— A global professional service firm

headquartered in Canada, specializing in providing technical expertise and strategic advice to clients in the Transport & Infrastructure, Property & Buildings, Environment, Industry & Energy sectors

— Approximately 43,600 employees, active in 40 countries

— Generating TTM $CAD$5.8 billion in net revenues and TTM$CAD$603.4 million in adjusted EBITDA for the last 12 months ended June 30, 2018

— A pure play consulting and design firm, no construction risk

— Led by an experienced board & management team and supported by long term shareholders

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5

A global player of approx. 43,600 professionals

Asia3,210

As at June 30, 2018

AustraliaNew Zealand

4,890

Middle East India

2,160

Nordics5,530

UK Ireland

8,000 Continental Europe

730

South Africa580

US7,370

Central & South America

2,930

Canada8,200

By operating segment

37%EMEIA

31%AMERICAS

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Percentage of net revenues – Based on Fiscal 2017 results *Includes Industry, Resources and Power & Energy

14%APAC18%

CANADA

By market segment

50%TRANSPORT &

INFRASTRUCTURE

29%PROPERTY & BUILDINGS

11%ENVIRONMENT

10%INDUSTRY &

ENERGY*

A global player with attractive geographic and business mix

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Our positioning in the infrastructure and construction value chain

PLANNING DESIGN

CONSTRUCTION SERVICES

(Construction/ProjectManagement)

EQUIPMENT SUPPLIERS

MATERIALS AND ENGINEERED

PRODUCTS

WE HAVE A HORIZONTALFEE-FOR-SERVICE MODEL

ARCHITECTS CONTRACTORS AND DEVELOPERS

OPERATION AND MAINTENANCE

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A young and experienced leadership team

HUGO BLASUTTACanada

GREGORY KELLYAmericas

MARK NAYSMITHUK

ALEXANDRE L’HEUREUXPresident and CEO

PAUL DOLLINChief Operating Officer

BRUNO ROYChief Financial Officer

ROBERT OUELLETTEChief Corporate Services Officer

Steeve RobitailleChief Legal Officerand Executive Vice President, Mergersand Acquisitions

ISABELLE ADJAHI Senior VP, IR & Communications

MAGNUS MAYERNordics

GUY TEMPLETONANZ

DAVE MCALISTERTransport and Infrastructure

TOM SMITHProperty and Buildings

GREG KANEMiddle East

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A proven and sustained performance

1,020.1

1,677.2

2,349.9

4,486.84,895.1

5,356.6

5,775.6

2012 2013 2014 2015 2016 2017 TTMQ2 18

NET REVENUES*

* In millions CAD – Non-IFRS measures

125.4

180.6253.5

441.5499.0

555.2603.4

12.3%

10.8%10.8% 9.8%

10.2%10.4%

11.0%

2012 2013 2014 2015 2016 2017 TTMQ2 18

ADUSTED EBITDA* AND ADJUSTED EBITDA MARGIN*

PB Acquisition

WSP Acquisition

Q2 2018 Highlights

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Q2 2018Highlights

Solid Q2 18 financial results, with organic growth in net revenues spanning across all reportable segments and strong trailing twelve-month free cash flow

Once we close Louis Berger transaction, all of our 2015-2018 Strategic Plan objectives will have been met

Reiterating our 2018 outlook

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Net revenues were $1.5 billion, up 17.1%

Organic growth in net revenues was strong at 8.7%

Adjusted EBITDA at $169.5 million Adjusted EBITDA at 11%

Backlog, stood at $6.7 billion, representing approximately 10.3 months of revenues

Backlog organic growth amounted to 7.8%

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Louis BergerRATIONALE• Strengthen our presence in the US• Adds depth to our transportation

team• Strengthens our expertise in

sectors and services that WSP had targeted for growth (critical mass in water and environment)

• Provides a gateway to the Federal Services Business

• Increases our presence in Continental Europe, specifically in countries we had previously intended for growth, notably, France and Spain.

• US$480M revenues and US$45M normalized EBITDA

TRANSACTION• $US400M purchase price• Mid-single digit to accretive

adjusted net earnings per share before amortization of intangibles, without considering any synergies

• Approximately US$15 million recurring cost synergies

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Strategic Plan Update

48,000 45,000

Employees

Once Louis Berger is closed

> 6.0B 6.0B

Net Revenues (CAD)

± 11.0 11.0

Adjusted EBITDA Margin (%)

2018 Objective

Our strategy

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Our strategy

• Pure play consulting &

design firm without

construction exposure

• Leading presence in

Transport & Infrastructure

and Property & Buildings

• Focus on mature

geographies with niche

growth in emerging

markets

Where we compete

Four pillars:

• Growth

(M&A, organic)

• People & Expertise

• Operational Excellence

• Clients

How we compete

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Where we compete: Advantages of diversification

Exposure to various economies and risk mitigation

Opportunity to better service local and international clients

Access to pool of talent

Knowledge sharing

Leverage best business practices

Communities of practice

Cross-selling opportunities

Opportunity to develop professionally and international careers

Lower-cost design centres

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How we compete: our 2015-2018 Strategic Plan

CLIETS

CLIENTS

1st

CHOICE FOR ALL CLIENTS,

LARGE OR SMALL

10%OF OUR REVENUES

FROM GLOBAL

CLIENTS

OPERATIONALEXCELLENCE

11%EBITDA MARGIN

> 100%CASH FLOW/NET INCOME

< 85 DAYSDAYS SALES

OUTSTANDING (DSO)

CONSOLIDATE AND EXPAND

OUR EXPERTISE IN OUR CORE

SECTORS (T&I, P&B, ENV.)

OPPORTUNISTIC

DEVELOPMENT IN SELECTED

GEOGRAPHIES

IN OTHER SECTORS

45,000EMPLOYEES

EMPLOYEESGROWTH

$6.0BNET REVENUES

$ 1.3BTHROUGH ACQUISITIONS

5%ANNUAL ORGANIC GROWTH

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Growth: we have a well-defined road map

FROM LOCAL TO NATIONAL,

TO INTERNATIONAL

More than 100 acquisitions

Major acquisitions

WSP 9,000 people (2012)

Focus 1,800 people (2014)

Parsons Brinckerhoff 13,500 people (2014)

MMM 2,000 people (2015)

Mouchel 2,000 people (2016)

Opus 3,000 people (2017)

Louis Berger* 5,000 people (2018)

2006-2017 TODAY 2015-2018

A TRULY MULTI-DISCIPLINARY

FIRM

43,600 employees(Approx. 48,000 with Louis Berger)

TTM net revenues: $5.8 B(Louis Berger 2017 revenue:

US$480M)

TTM adjusted EBITDA: $603.4 M(Louis Berger 2017 normalized

EBITDA: US$45M)

A STRATEGY OF CONTINUITY TO EXPAND

OUR STRATEGIC SERVICES OFFERING

TO CLIENTS

Our objectives45,000 employees

$6.0B in net revenues ($1.3B through acquisitions)

5% annual organic growth

11% adjusted EBITDA margin

Continue to consolidate the industry to create the best professional services firm in each of our geography and sector

*Pending

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Growth: the benefits of consolidation

Size of project is increasing

Financial strength is an asset

Geographic and market

diversification provide resilience

Ability to mobilize depth of workforce

SCALE

CLIETS

EXPERTISE INTEGRATED SERVICES

Acquire best in class expertise

Benefit of knowledge sharing, collaboration and

cross-selling

Access low cost production centers

and improve competitiveness

Cover the project lifecycle with full

suite of services

Offer a one-stop shop

Develop a multidisciplinary

offering

Growth: our recipe for successful combinations

— Performing and accretive companies— Complementary activities and services— Successful and respected in their fields— Strong portfolio of projects and client base— Share our vision and corporate culture

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Growth: Acquisitions will be key to our continued success

TRANSPORTATION BUILDINGS INFRASTRUCTURE ENVIRONMENT

SUBSCALE IN CERTAIN SECTORS

EXPANDING GEOGRAPHICALLY

EXPANDING GEOGRAPHICALLY

ADDING SPECIFIC EXPERTISE

SUBSCALE IN CERTAIN

SECTORS

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(in $M, CAD) Q2 2018

Financial liabilities $1,280.1

Less: Cash ($153.4)

Net debt $1,126.7

TTM adjusted EBITDA* $603.4

Net debt / TTM adjustedEBITDA* (adjusted for 12-month net revenues for all acquisitions)

1.8x

* In millions CAD – Non-IFRS measures

We have the resources to grow

2018 Outlook

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* Non-IFRS measure.1) Target excluding any debt required to finance acquisitions2) Due mainly to personnel and real estate integration costs related to the acquisition of Opus completed in Q4 2017, to real estate integration costs pertaining to the Mouchel acquisition completed in Q4 2016 and IT outsourcing program costs.

Net revenues* Between $5,700 million and $5,900 million

Adjusted EBITDA* Between $610 million and $660 million

Seasonality and adjusted EBITDA* fluctuations

Q1: 18% to 21%Q2: 25% to 28%Q3: 26% to 29%Q4: 24% to 27%

Tax rate 23% to 25%

DSO* 80 to 85 days

Amortization of intangibleassets related to acquisitions Between $60 and $70 million

Capital expenditures Between $115 and $125 million

Net debt to adjusted EBITDA* 1.5x to 2.0x1)

Acquisition and reorganization costs*Between $40 million and $50 million 2)

2018 Outlook Reiterated

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H2 2018 Regional operational outlook

AMERICASStrong US Transportation and

Infrastructure spending

Integration of POCH and ConCol to deliver synergies and improvement

in operating margins

Negative organic growth in net revenues in Q4 2018 due to the substantial FEMA net revenues

recognized in Q4 2017

MIDDLE EASTDifficult economic

conditions

Negative organic growth

AUSTRALIA/NEW ZEALANDSolid transportation market

Mid to high single digits

CANADASolid backlog and good prospects

Low to mid single digit

NORDICSHigher utilization rates

Mid to high single digits

ASIAContinued slowdown in

buildings market

Negative organic growth

UKLarge public sector work

Low single digits

SOUTH AFRICADifficult economic

conditions

Negative organic growth