Mathios Refractories S.A., in the context of proper and timely information to the investing public, and in accordance with Articles 4.1.1 of the Athens Stock Exchange Regulation, informs the investing public that the Annual Ordinary General Meeting of the CompanyΆs Shareholders will be held on Thursday, July 10, 2025, instead of Thursday, June 19, 2025, as initially announced.

The Company reserves the right to amend the above dates, provided that timely notice is given to the investing public through an amendment of the present announcement.