Press Release Paris, France, February 8, 2021 – 10:30 pm

ESI Group announces governance evolution

ESI Group, Paris, France, (ISIN Code: FR0004110310, Symbol: ESI), announces as part of the evolution of its governance, effective February 8th, 2021, the appointment of Alex Davern as Director and Chairman of the Board of Directors, changes to the organization of the Board and the planned retirement of Vincent Chaillou, Corporate COO.

Chairman of the Board

As of February 8th, 2021, Alex Davern is appointed Director and chairman of the ESI Group board of directors. Alex Davern was appointed independent observer by ESI Board of Directors in October 2020, and was previously CEO of National Instruments, Inc. (NATI:NASDAQ).

Alex Davern, comments: "I have enjoyed working with Cristel and the team at ESI and I see great potential in the unique value that ESI Group brings to its customers. I look forward to continuing to work with Cristel and the rest of the Board to complete ESI's transformation to empower manufacturers with powerful and resultsoriented solutions."

Cristel de Rouvray, CEO comments: "Building on decades of technological excellence, ESI Group made the bold decision to transform and aim for sustained improvement in our performance to ensure we have the resources necessary to execute on our vision and mission. Alex Davern's 26 years of experience in growing and transforming National Instruments, together with the continued support of our board, will be an invaluable help to me and ESI. I am committed to leading ESI in the years to come."

Bio of Alex Davern

Alex Davern served National Instruments (NATI: NASDAQ), a global leader in automated test and automated measurement systems for 26 years in successive leadership positions including as Chief Operating Officer and Chief Executive Officer. Alex Davern contributed to the company's development until it reached approximately \$1.4 billion in sales with more than 7,000 people in 50 countries. Alex Davern has recently stepped down from his role as CEO to focus on serving as a board member of National Instruments Inc., Cirrus Logic Inc. and ESI Group. He graduated from University College Dublin in 1986 and has dual Irish and US citizenship.

Composition of the Board of Directors

Anticipating the end of his mandate at the June 2021 shareholders meeting, Charles-Helen des Isnards has stepped down from ESI's Board of Directors effective February 8th, 2021 and is nominated Board Observer.

Based on the above modifications, the Company's Board of Directors will be composed of eight directors (5 of whom are independent) and one board observer:

Alex Davern, Chairman of the Board and the Nomination & Governance Committee and Member of the Strategic, Audit and Technology & Marketing committees
Alain de Rouvray, founder

Cristel de Rouvray, CEO, Chairman of the Strategic committee and member of Nomination & Governance and Technology & Marketing committees
Rajani Ramanathan, Chairman of the Technology & Marketing committee and member of Strategic, Nomination & Governance and Compensation committees
Véronique Jacq, Chairman of the Audit Committee and member of the Strategic and Technology & Marketing committees
Eric d'Hotelans, Chairman of the Compensation committee and member of the Strategic, Audit and Nomination & Governance committees
Vincent Chaillou, Corporate COO (DGD) and member of the Strategic and Technology & Marketing committees
Yves de Balmann, member of the Strategic and Compensation committees
Charles-Helen des Isnards, board observer

Planned retirement of Vincent Chaillou

The Board announces the retirement of Vincent Chaillou, effective on December 31st, 2021. The retirement process, which is part of the evolution of ESI governance strategy, is done in 2 phases:

On February 8th, 2021, ESI Group's Board of Directors, recorded the planned end of Vincent Chaillou mandate as Corporate COO (DGD) as of June 22nd, 2021, date of the planned Shareholders meeting.
From June 23rd , 2021, Vincent Chaillou will remain Strategic Director and Regional Manager for EMEA & Far East and member of the Group Executive Committee till December 31st, 2021.

Vincent Chaillou will remain member of the board of directors.

Vincent Chaillou comments: "I am committed to this year of continuity in ESI Group's transformation. My greatest challenge will be the handover before my operational retirement. My mandate as a director will allow me to remain involved in the life of the company".

Group Executive Committee

Current executive team is composed of:

Cristel de Rouvray, CEO
Vincent Chaillou, Corporate COO (DGD), Strategic Director and Regional Manager for EMEA & Far East
Mike Salari, Corporate COO, Revenue Generation
Olfa Zorgati, Chief Financial Officer
Dominique Lefebvre, EVP Platforms and Product Operations
Corinne Romefort-Régnier, Corporate Governance Director

Additional information

ESI Group was informed by Cristel de Rouvray that she has notified the parties to the shareholders' agreement entered into on October 25th , 2000 between herself, certain members of her family and the Dubois estate, of her decision to no longer be bound by the rights and obligations of this agreement as from March 9th, 2021. As

a result, Cristel de Rouvray will no longer be deemed acting in concert with the other parties to this shareholders agreement.

Upcoming events

Annual Revenues 2020 – Feb. 9, 2021 (6pm CET) Annual results 2020 - March 16, 2021 (6pm CET)

Contacts Press & Shareholder Relations

ESI Group Verbatee Florence Barré [email protected] +33 1 49 78 28 28

JJérôme Goaer, [email protected], +33 6 61 61 79 34 Aline Besselièvre, [email protected], +33 6 61 85 10 05

About ESI Group

Founded in 1973, ESI Group is a leading innovator in Virtual Prototyping solutions and a global enabler of industrial transformation. Thanks to the company's unique know-how in the physics of materials, it has developed and refined, over the last 45 years, advanced simulation capabilities. Having identified gaps in the traditional approach to Product Lifecycle Management (PLM), ESI has introduced a holistic methodology centered on industrial productivity and product performance throughout its entire lifecycle, i.e. Product Performance Lifecycle™, from engineering to manufacturing and in operation. Present in more than 20 countries, and in major industrial sectors, ESI employs 1200 high level specialists around the world and reported 2019 sales of €146 million. ESI is headquartered in France and is listed on compartment B of Euronext Paris.

For further information, go to www.esi-group.com.

AI Terminal

ESI Group

1296_iss_2021-02-08_7f0c72cb-c387-41da-80d8-8e742e9a9970.pdf