GUILLEMOT CORPORATION: Changes to Corporate Governance Effective June 23, 2026

Guillemot Corporation is a designer and manufacturer of interactive entertainment hardware and accessories. The Group offers a diversified range of products under the Hercules and Thrustmaster brand names. Active in this market since 1984, the Guillemot Corporation Group is currently present in 11 countries (France, Germany, Spain, the UK, the United States, Canada, Italy, Belgium, Romania, the Netherlands and China [Shanghai, Shenzhen and Hong Kong]) and distributes its products in more than 150 countries worldwide. The Group’s mission is to offer high-performance, ergonomic products which maximize enjoyment of digital interactive entertainment for end users.

Contact: Guillemot Financial Information – Tel.: +33 (0) 2 99 08 08 80 – www.guillemot.com

ISIN: FR0000066722

Guillemot Corporation S.A.

A public limited company (société anonyme) with capital of €11,309,359.60 – Registered company number 414 196 758 Vannes
Headquarters: 2 Rue du Chêne Héleuc, 56910 Carentoir, France

Carentoir, June 23, 2026

Changes to Corporate Governance Effective June 23, 2026

Guillemot Corporation S.A., a leading player in gaming accessories and digital audio, today announces a change in its governance following the accidental passing of Claude Guillemot on June 19, 2026.

This exceptional and unprecedented situation has required the Company to take the necessary steps, in accordance with its governance rules, to ensure an orderly succession within its Board of Directors, with a view to maintaining business continuity.

At a meeting on June 23, 2026, the Board agreed to appoint Christian Guillemot as Chairman of the Board of Directors, effective June 23, 2026, for the remainder of his term of office as a director.

The Board of Directors wishes to make clear that Valentin Guillemot, Claude Guillemot’s eldest son, will continue to serve as Chief Executive Officer, a position he has held since July 1, 2025.

The Board’s composition remains unchanged, with nine members. To fill the vacancy that has arisen, the Board has co-opted Victoria Guillemot, Claude Guillemot’s daughter, to serve as a director on an interim basis to replace Claude Guillemot. This appointment is made on an interim basis, in accordance with the provisions of Article L.225-24 of the French Commercial Code.

Claude Guillemot helped grow the Company through his strategic and financial vision. His drive for innovation enabled the business to establish itself in the market while remaining true to its values.

From its earliest days, the Company has been built on a foundation of strong values: innovation, passion, quality and a focus on users’ needs. Even now, these principles remain at the core of the Company’s commitments.

Guillemot Corporation is a designer and manufacturer of interactive entertainment hardware and accessories. The Group offers a diversified range of products under the Hercules and Thrustmaster brand names. Active in this market since 1984, the Guillemot Corporation Group is currently present in 11 countries (France, Germany, Spain, the UK, the United States, Canada, Italy, Belgium, Romania, the Netherlands and China [Shanghai, Shenzhen and Hong Kong]) and distributes its products in more than 150 countries worldwide. The Group’s mission is to offer high-performance, ergonomic products which maximize enjoyment of digital interactive entertainment for end users.

Contact: Guillemot Financial Information – Tel.: +33 (0) 2 99 08 08 80 – www.guillemot.com

ISIN: FR0000066722

Guillemot Corporation S.A.

A public limited company (société anonyme) with capital of €11,309,359.60 – Registered company number 414 196 758 Vannes
Headquarters: 2 Rue du Chêne Héleuc, 56910 Carentoir, France

About Christian Guillemot

After graduating from the European Business School in London, Christian Guillemot played a leading role in the IPOs of Ubisoft Entertainment (a developer and publisher of interactive PC and console games), Guillemot Corporation (a designer and manufacturer of interactive entertainment hardware and accessories under the Hercules and Thrustmaster brands) and Gameloft (a leading global publisher of downloadable video games), each of which he co-founded with his four brothers.

As well as serving as Deputy Chief Executive Officer and director of the Guillemot Corporation and Ubisoft Entertainment groups, he is also Chairman and Chief Executive Officer of the two family holding companies, Guillemot Brothers Ltd. and Guillemot Brothers SAS, and corporate secretary of Longtail Studios Inc. He runs the AMA Corporation plc group (“AMA”), which he co-founded with his four brothers in 2016 and is now a global leader in productivity applications for field professionals.

Since 2016, AMA has been designing secure communications software used by over 400 large corporate clients in more than 130 countries. This software uses cutting-edge technology such as assisted reality and artificial intelligence to enable users to provide remote support, carry out digital inspections and supply work instructions. These solutions help major global groups significantly increase the productivity of remote teams while substantially reducing their carbon footprint.

A passionate innovator, Christian Guillemot is also actively involved in developing French Tech, having set up three digital accelerators in Brittany, where he has served as a local elected representative since 2014.

About Victoria Guillemot

Having graduated from the IÉSEG School of Management, where she specialized in entrepreneurship, as well as from McGill University in communications and public relations and Georgetown University in environmental science and management, Victoria Guillemot has pursued a career with organizations committed to sustainable innovation and impact entrepreneurship.

In particular, she has worked for ChangeNOW, the organizer of the world’s largest summit focused on solutions for the planet, where she has helped develop international projects bringing together businesses, investors, institutions and stakeholders involved in the green transition. She has also worked for Back Market, a major player in the European market for refurbished tech, where she gained exposure to best practices in recycling, refurbishment and the circular economy, deepening her expertise in business models with a strong positive environmental impact.

Her experience encompasses strategic project management, the coordination of impact-driven ecosystems, partnership development and the promotion of innovative initiatives in the fields of environmental and social transition. She has also gained experience within the Group itself, where she has participated in strategic analysis and operational implementation relating to environmental and social transition challenges.

Committed to responsible innovation, she brings her expertise to projects that combine positive impact, sustainable transformation and long-term value creation.

Contacts:
Financial Reporting
Corporate Communications
Christel Terrier
Hervine Motus
financial@guillemot.fr
communication@guillemot.fr