13 February 2026

RHI Magnesita N.V.

("RHI Magnesita" or the "Group")

Notice of 2025 Full Year Results

RHI Magnesita will announce its Preliminary Full Year Results for the year ended 31 December 2025 on Monday 2 March 2026.

A presentation for analysts will be held at 08:15 UK time (09:15 CET) on Monday 2 March 2026 at the offices of Hudson Sandler, 25 Charterhouse Square, London EC1M 6AE. The analyst presentation will be broadcast live via webcast and conference call.

The webcast can be accessed using the following link:

https://www.investis-live.com/rhimagnesita/6978eea1b05b910017bae71c/lepp

A replay will be made available via the webcast link and on the Company's website shortly after the event finishes.

For further enquiries, please contact:

Alexander Ordosch, Head of Investor Relations

Tel: +43 699 1870 6162

E‐mail: [email protected]

Hudson Sandler, Financial PR

Tel: +44 020 7796 4133

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