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PHILIPPE CHEVALLIER – CFO & Deputy CEO

ODDO BHF FORUM 2018 11 & 12 January - Lyon

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Disclaimer

ODDO BHF FORUM 2018

This presentation includes forward-looking statements, which, by their very nature, involve inherent risks and uncertainties. These

statements concern future financial performance and other risks relating to Assystem's results, levels of business, performance, and

objectives.

Actual results could therefore differ significantly from those currently anticipated. Assystem considers that such statements are based

on reasonable assumptions, but cannot and does not give any assurance that future results, levels of business, performance or

achievements will be consistent with those statements.

The above-mentioned risks include: trends in Assystem's markets; increased competition in these markets; the profitability of

Assystem's expansion strategy; challenges to or loss of its intellectual property rights; its ability to establish and maintain strategic

relationships in its major businesses; its ability to develop and take advantage of new software and services; and the effect of future

acquisitions and investments on the Assystem share price.

Due to the uncertain nature of these forward-looking statements, the reader is advised that they do not constitute a guarantee by

the Company or by any other person as to the achievement of Assystem's goals and projects. Neither the Company nor any other

person assumes any liability for the accuracy or completeness of these statements, which apply solely to this presentation.

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ASSYSTEM IN 2017: STRATEGIC RECONFIGURATION

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Strategic movements in 2017

Creation of Assystem Technologies

60.8% owned by Ardian and 39.2% by Assystem

Objectives: speed up the expansion of GPS and

participate to value creation

Acquisition of a 5% stake for €124 million(1)

Objectives: strengthen Assystem’s existing partnerships

with EDF and other nuclear players and capitalise on

attractive investment conditions

Launch of a share buyback offer for €225 million

Objective: allocate to the Company’s shareholders a

portion of the proceeds from the transfer of control of

GPS

STRATEGIC RECONFIGURATION

Transfer of control of

Global Product Solutions

Acquisition of a stake in

Framatome

Share buyback offer

(1) Provisional purchase price, subject to certain contractual adjustments.

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100%

5% 39%

The new Assystem

STRATEGIC RECONFIGURATION

ENERGY

& INFRASTRUCTUREFRAMATOME ASSYSTEM

TECHNOLOGIES

accounted for by the

equity method

STAFFING

100%

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The Biotech Quality Group Euro Contrôle Projet

Two acquisitions for Energy & Infrastucture in 2017

STRATEGIC RECONFIGURATION

Assystem in the Life Sciences sector:

400 engineers,

pharmacists and

academics

> €40min revenue

in 2018

Reinforcement in PMO (Project

Management Office)

(€21m in turnover - 220 people)

Diverse portfolio of clients and

wide range of sectors (defence, nuclear,

transportation, oil & gas and chemicals)

Leadership in PMO covering the

entire range of services (planning and

cost optimisation as well as risk, contract and

quality management)

350ingénieurs

spécialisés

€30min revenue

in 2018

Assystem in PMO:

Reinforcement in the Life Science

sector (€11m in turnover - 100 people)

Client portfolio, geographical

presence (Belgium, France and Switzerland)

and complementary skills

New unique offering at all stage of

a drug’s life cycle (commissioning,

qualification, validation, regulatory compliance

and performance)

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• December 15, 2017:

announcement of a takeover

bid project on Software Quality

Systems AG (SQS) by a

subsidiary of Assystem

Technologies

• SQS is listed on the London

Stock Exchange Alternative

Investment Market

Update on the participation in the financing of Assystem Technologies'

takeover bid on SQS

Assystem will participate in a potential

equity raise carried out by Assystem

Technologies Groupe to finance the

acquisition of SQS for a total of up to

€60.72 million(1)

Assystem’s contribution to this financing would be

funded through credit facilities set up with the

Company’s banks in addition to its existing facilities so

that it can continue to have the available resources it

needs to ensure the development of Assystem Energy &

Infrastructure

(1) Assystem’s participation would be implemented through the subscription by Assystem to an increase in the share capital of Assystem

Technologies (representing 50% of the amount of Assystem’s investment) and to the issuance of convertible bonds by Assystem Technologies

(representing the other 50% of the amount of Assystem’s investment).

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FOCUS ON ASSYSTEM ENERGY & INFRASTRUCTURE:

A NEW GROWTH PROFILE

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Assystem Energy & Infrastructure at a glance

Over 50 years ‘ experience

International presence

€316m in revenue in 2016

Independent engineering specialist focused on:

� Partnering public authorities, operators and industrialists in

managing and engineering their capital expenditure projects

� Complex projects subject to significant safety and regulatory

constraints

� Mastering state-of-the-art engineering digital tools

Revenue by sector

58%

14%10%

7%4%4%

NUCLEAR ENERGY BUILDING

INFRA

LIFE

SCIENCES

OIL

& GAS

INDUSTRY

3%

OTHER

• Belgium

• France

• India

• Malaysia

• Morocco

• Nigeria

• Qatar

• Romania

• Russia

• Saudi Arabia

• Singapore

• Switzerland

• Turkey

• United Arab

Emirates

• United Kingdom

ASSYSTEM E&I: A NEW GROWTH PROFILE

4,000 employees

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A targeted strategy

Nuclear – the strategic cornerstone:

� Deep offering for nuclear engineering

� Strong international positioning

� High demand for nuclear engineering: need for

maintenance, construction of new nuclear power

plants, and dismantling operations

Capitalise on this expertise to target

high-growth sectors:

� Life Sciences and Transport

� New projects and management of existing

infrastructure

ASSYSTEM E&I: A NEW GROWTH PROFILE

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The growing demand for

electricity and digitisation

are major challenges for

our clients in the fields of:

EnergyProduction and

transport

Infrastructure Everyday life

and work

Mobility

Assystem offers three service lines:

By drawing on two dedicated cross-business technical supports:

EngineeringOperating performance Safety and security

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Project managementand Critical systems integration and

maintenance

Assystem: a vector for the digital and energy revolutions

ASSYSTEM E&I: A NEW GROWTH PROFILE

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Our strengths

50 YEARS’ EXPERIENCE

IN COMMISSIONING AND

MAINTAINING NUCLEAR POWER

PLANTS IN FRANCE AND THE UK

GUARANTEED DELIVERYWITH SCHEDULES AND BUDGETS RESPECTED

LONG-STANDING EXPERIENCE IN MANAGING

COMPLEX PROJECTS AND SAFETY & CONTROL

SYSTEMS

TECHNOLOGICAL

INDEPENDENCE

ETHICS, SECURITY &

HSEAT THE HEART OF OUR BUSINESS

ONE OF THE WORLD’s

TOP 3NUCLEAR ENGINEERING FIRMS

IN-DEPTH KNOWLEDGEOF OUR INDUSTRIAL CLIENTS’ BUSINESSES

AREVA

CEA

EDF

GSK

RATP

RENAULT NISSAN

ROLLS ROYCE

ROSATOM

SANOFI

SAUDI ARAMCO

SAUDI ROYAL

COMMISSION

SNCF

TOTAL

Major client references:

ASSYSTEM E&I: A NEW GROWTH PROFILE

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Our roadmap

� Strengthen our positions in France

� Roll out our offerings to Germany

� Grow our market share in Belgium,

Switzerland and the Middle East

� Grow our transport infrastructure

business (automation & systems)

� And life sciences

� Switch from a PMC* to PMS** approach

� Develop new technological solutions

ET&I(1)

� Partnering EDF worldwide (India, Turkey etc.)

� Partnering new entrants (ENEC and EUAS in

Turkey, Kacare in Saudi Arabia)

� Strengthen our positioning in the UK

� Enter the German market (decommissioning)

� Broaden the services offered to

existing clients (EPC, digital etc.)

� Develop partnerships with large

international nuclear companies (Rosatom, MHI etc.)

� Deploy existing services (STEMA)

� Develop new solutions

NUCLEAR

ASSYSTEM E&I: A NEW GROWTH PROFILE

(1) Energy Transition & Infrastructures

GEOGRAPHIC

EXPANSION

CLIENT AND

SECTOR FOCUS

DIVERSIFYING

OFFERINGS

*PMC: Project management consultancy / **PMS: Project management support

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APPENDIX

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Revenue for the nine months ended 30 September 2017

ODDO BHF FORUM 2018

In millions of euros 2016* 2017Total y-on-y

change

Organic y-on-y

change**

9 months 278.5 293.4 +5.3% +4.9%

Energy & Infrastructure 230.5 252.6 +9.5% +8.1%

Staffing 41.1 34.4 -16.4% -14.0%

Other 6.9 6.4 - -

* Restated to facilitate year-on-year comparisons.** Based on a comparable scope of consolidation and constant exchange rates.

9 months 427.9 495.5 15.8% 12.8%

Organic growth of 8.2% excluding the impact of the decrease in Staffing revenue

Organic growth of 9.5% in the Nuclear sector and 6% for ET&I

Organic growth of 11.8% in the Aerospace sector (revenue of €281.8m)

Organic growth of 23.9% in the Automotive sector (revenue of €174.6m)

Consolidated revenue

Assystem Technologies

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Free float 35.19%

HDL

Development

Treasury shares

3.25%

61.56%(1)

% of shares – (1) Including 0.22% held by HDL,

the controlling shareholder of HDL Development

Assystem’s ownership structure at 29 December 2017

Indices:

CAC All-Shares

CAC Industrials

CAC Support Services Next 150

Market capitalisation:

€468m

(share price: €29.92)

Euronext Paris

Compartment B

FR0000074148

Mid-caps deferred

settlement service (SRD)

Number of shares:

15.668.216

O/w treasury shares:

509.153

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2018 financial calendar

ODDO BHF FORUM 2018

7 February:

19 March:

26 April:

16 May:

26 July:

10 September:

8 November:

Press release for 2017 annual revenue

Press release for 2017 annual results

Presentation meeting on 20 March at 8.30 a.m.

Press release for first-quarter 2018 revenue

Annual General Meeting

Press release for first-half 2018 revenue

Press release for first-half 2018 results

Presentation meeting on 11 September at 8.30 a.m.

Press release for third-quarter 2018 revenue