Directorate Change

RHI Magnesita N.V.

("RHI Magnesita" or the "Company" or "Group")

DIRECTOR NOMINATION

The Board is pleased to propose Franz-Ferdinand Buerstedde to the shareholders at the 2025 Annual General Meeting to be elected as a Non-Independent Non-Executive Director. Franz-Ferdinand has been proposed by Rhône Capital, which has recently advised the Company that funds sponsored by Rhône Capital have indicated a current holding of approximately 24% of the Company's capital.

Franz-Ferdinand joined Rhône Capital in 2004 and became a Managing Director in 2011. During his tenure at Rhône, he has been active in the sourcing, execution, and monitoring of investments in the business services, consumer, energy and general industrial sectors. Before joining Rhône, Franz-Ferdinand worked in the mergers and acquisitions department of Citigroup.

Franz-Ferdinand currently serves as a non-executive director on the boards of MaxamCorp Holding S.L., Rexair LLC, Saks Global, and Sweet Oak Holdings LP. He previously served on the board of several Rhône portfolio companies, including Elizabeth Arden, Global Knowledge, Magnesita, Neovia Logistics, and Wahoo.

Franz-Ferdinand holds a Masters in Management with distinction from ESCP-EAP European School of Management in Paris and a Masters in Finance with distinction from the London Business School. Prior to this, he served as second lieutenant in German Army Intelligence.

Herbert Cordt, Chair of the Board, commented, "We look forward to welcoming Franz-Ferdinand onto the Board of RHI Magnesita and benefitting from his extensive experience."

There are no further disclosures to be made pursuant to Listing Rule 6.4.8.

An updated Notice of Annual General Meeting will be issued shortly.

For further enquiries, please contact:

Chris Bucknall, Head of Investor Relations

Tel: +43 699 1870 6490

E‐mail: [email protected]

Sally Caswell, Company Secretary

Tel: +43 699 1870 6345

E-mail: [email protected]

About RHI Magnesita

RHI Magnesita is the leading global supplier of high-grade refractory products, systems and solutions which are critical for high-temperature processes exceeding 1,200°C in a wide range of industries, including steel, cement, non-ferrous metals and glass. With a vertically integrated value chain, from raw materials to refractory products and full performance-based solutions, RHI Magnesita serves customers around the world, with over 20,000 employees in 65 main production sites (including raw material sites), 12 recycling facilities and more than 70 sales offices. RHI Magnesita intends to leverage its leadership in terms of revenue, scale, product portfolio and diversified geographic presence to target strategically those countries and regions benefiting from more dynamic economic growth prospects.

The Group is listed within the Equity Shares (Commercial Companies) category ("ESCC") of the Official List of the London Stock Exchange (symbol: RHIM) and is a constituent of the FTSE 250 index, with a secondary listing on the Vienna Stock Exchange (Wiener Börse). For more information please visit: www.rhimagnesita.com