Mersen – Changes within Mersen’s Executive committee
Mersen announces new leadership for its two segments and the creation of Mersen International to support its growth ambitions.
- Matthieu Elriz will be appointed Executive Vice President of the Advanced Materials segment
- Ferran Sacrest will be appointed Executive Vice President of the Electrical Power segment
- Outgoing Executive Vice President of the Electrical Power segment, Gilles Boisseau, will lead the newly created Mersen International to better leverage the Group’s global scale
Paris, December 10, 2025 – Mersen (Euronext FR0000039620 – MRN), a global expert in electrical power and advanced materials, announces new leadership for its two segments and the creation of Mersen International to support its growth ambitions.
Matthieu Elriz, 41 years old, joined the Group in 2022. He is currently Senior Vice President of Mersen’s Graphite Materials Technologies (GMT) business, part of the Advanced Materials segment. In recent years, he has played a key role in implementing the Group’s roadmap and driving GMT’s business growth. Before joining Mersen, Matthieu accumulated 7 years of experience at Imerys in product line management and strategy positions, after 4 years at Rothschild bank in Mergers & Acquisitions. He will be appointed Executive Vice President of the Advanced Materials segment, succeeding Éric Guajioty, who will retire.
Ferran Sacrest, 44 years old, joined the Group in 2014 after the Group acquired Cirprotec. A Spanish national, Ferran is currently Vice President Global Sales & Customer Care for the Electrical Power segment. Between 2019 and 2024, he was based in the United States, overseeing Sales and Customer Service for the Americas within the Electrical Power segment. Ferran began his career at Accenture before moving to Schneider Electric, where he held various marketing positions. He will be appointed Executive Vice President of the Electrical Power segment, succeeding Gilles Boisseau.
Gilles Boisseau, 61, will become Executive Vice President of the newly created Mersen International, which will play a pivotal role in delivering the Group’s growth plan. He will draw on his experience both in France and internationally to support synergies across various markets and accelerate the company’s global expansion. Gilles joined Mersen in 2015 as Executive Vice President of the Electrical Power segment. Over the years, he has successfully expanded the segment through acquisitions and organic growth, while improving its profitability.
These changes will take effect on January 1, 2026.
I would like to extend my sincere thanks to Eric Guajioty and Gilles Boisseau for their commitment and strong dedication in the Group’s development over the years as segment heads. Gilles’ experience as a segment leader and his extensive knowledge of our products and markets will now be leveraged in his new role heading Mersen International, which will enhance coordination across our regions and support the execution of our growth strategy.
Luc Themelin
Chief Executive Officer
I would like to thank Eric and Gilles for their essential contribution over the past years leading the two Group’s segments. I am delighted to welcome Ferran and Matthieu to the Executive Committee. Their strong international experience and deep knowledge of our businesses will strengthen our collective momentum and contribute to the successful execution of our strategic roadmap, with the support of the new Mersen International.
Salvador Lamas
Deputy Chief Executive Officer
SourceMersen
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More information on Mersen: See the full profile on EMR Executive Services
More information on Luc Themelin (Chief Executive Officer, Mersen until Annual General Meeting in May 2026 + Nominated Non-Executive Chairman of the Board, Mersen at Annual General Meeting in May 2026): See the full profile on EMR Executive Services
More information on Salvador Lamas (Chief Operating Officer, Mersen + Designated Chief Executive Officer, Mersen until Annual General Meeting in May 2026 + Chief Executive Officer, Mersen as from after the Annual General Meeting in May 2026): See the full profile on EMR Executive Services
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More information on Matthieu Elriz (Senior Vice President, Graphite Materials Technologies (GMT) Business, Advanced Materials Segment, Mersen till January 1, 2026 + Executive Vice President, Advanced Materials Segment, Mersen as from January 1, 2026): See the full profile on EMR Executive Services
More information on Eric Guajioty (Group Vice President, Advanced Materials Segment, Mersen till January 1, 2026): See the full profile on EMR Executive Services
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More information on Gilles Boisseau (Executive Vice President, Electrical Power Segment, Mersen till January 1, 2026 + Executive Vice President, Mersen International, Mersen as from January 1, 2026): See the full profile on EMR Executive Services
More information on Cirprotec by Mersen: See the full profile on EMR Executive Services
More information on Imerys: https://www.imerys.com/ + Imerys is the world’s leading supplier of mineral-based specialty solutions for the industry with €3.6 billion in revenue and 12,400 employees in 40 countries in 2024. The Group offers high value-added and functional solutions to a wide range of industries and fast-growing markets such as solutions for the energy transition and sustainable construction, as well as natural solutions for consumer goods. Imerys draws on its understanding of applications, technological knowledge, and expertise in material science to deliver solutions which contribute essential properties to customers’ products and their performance. As part of its commitment to responsible development, Imerys promotes environmentally friendly products and processes in addition to supporting its customers in their decarbonization efforts.
Imerys is listed on Euronext Paris (France) with the ticker symbol NK.PA.
More information on Alessandro Dazza (Chief Executive Officer, Imerys): https://www.imerys.com/imerys-group/governance + https://www.linkedin.com/in/alessandro-dazza-890817172/
More information on Rothschild &Co: https://www.rothschildandco.com/en/ + Rothschild & Co is a family-controlled and independent group and has been at the centre of the world’s financial markets for over 200 years. With a team of c.4,600 talented financial services specialists on the ground in over 40 countries, Rothschild & Co’s integrated global network of trusted professionals provide in-depth market intelligence and effective long-term solutions for our clients in Global Advisory, Wealth & Asset Management, and Five Arrows, its alternative assets arm.
More information on Alexandre de Rothschild (Executive Chairman, Rothschild &Co): https://www.rothschildandco.com/en/about-us/corporate-governance/ + https://www.linkedin.com/in/alexandre-de-rothschild/
More information on Accenture: https://www.accenture.com/ch-en + Accenture is a leading global professional services company that helps the world’s leading businesses, governments and other organizations build their digital core, optimize their operations, accelerate revenue growth and enhance citizen services—creating tangible value at speed and scale. We are a talent- and innovation-led company with approximately 801,000 people serving clients in more than 120 countries. Technology is at the core of change today, and we are one of the world’s leaders in helping drive that change, with strong ecosystem relationships. We combine our strength in technology and leadership in cloud, data and AI with unmatched industry experience, functional expertise and global delivery capability. Our broad range of services, solutions and assets across Strategy & Consulting, Technology, Operations, Industry X and Song, together with our culture of shared success and commitment to creating 360° value, enable us to help our clients reinvent and build trusted, lasting relationships. We measure our success by the 360° value we create for our clients, each other, our shareholders, partners and communities.
More information on Julie Sweet (Chair & Chief Executive Officer, Accenture): https://www.accenture.com/us-en/about/leadership + https://www.linkedin.com/in/julie-sweet/
More information on Schneider Electric: See the full profile on EMR Executive Services
More information on Olivier Blum (Chief Executive Officer, Schneider Electric): See the full profile on EMR Executive Services