Total Voting Rights

1 October 2025

RHI Magnesita N.V.

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

Total Voting Rights

In accordance with DTR 5.6 of the FCA's Disclosure Guidance and Transparency Rules and Article 15 of the EU's Transparency Directive, RHI Magnesita announces that, as at 30 September 2025, its issued share capital consisted of 47,301,578 ordinary shares and 2,176,127 ordinary shares held in treasury.

Excluding the 2,176,127 ordinary shares held in treasury, RHI Magnesita has shares in issue with aggregate voting rights of 47,301,578.

The above figure (47,301,578) may be used by shareholders (and others with notification obligations) as the denominator for the calculation by which they will determine if they are required to notify their interest in, or a change to their interest in, RHI Magnesita under the FCA's Disclosure Guidance and Transparency Rules.

For further enquiries please contact:

Alexander Ordosch, Head of Investor Relations

Tel: +43 699 1870 6162

Email: [email protected]