MYTILINEOS S.A.

General Commercial Register (GEMI) No.: 757001000

Announcement of ex-dividend date / dividend payment date

MYTILINEOS S.A. (the “Company”) in accordance with article 4.1.3.4 of the Athens Exchange (ATHEX) Regulation, announces the following:

The Annual Regular General Meeting of the Shareholders of the Company, held on June 24,  2019, resolved, among others, to distribute a dividend in the sum of 0.36 euros per share which, after deduction of tax at 10%, pursuant to article 65 of law 4603/2019, results in a net payable dividend per share of 0.324 euros.

The ex-date has been set to June 26^th, 2019 and payment of the dividend to the beneficiaries shall commence on July 2^nd, 2019. The beneficiaries of the dividend are the shareholders registered in the records of the Dematerialised Securities System (DSS) on June 27^th, 2019 (record date).

Payment of the dividend shall be effected in accordance with the procedure stipulated in article 5.5 of the ATHEX Regulation and the specific provisions of the DSS Regulation, as follows:

(a) Through the operators of the beneficiaries (Banks, custodians and trading companies) selected by the shareholders themselves and authorised to collect the dividend. On July 2^nd, 2019 the Company shall credit the operators' accounts, which in turn shall pay the relevant amounts to the beneficiaries. It should be noted that investors may revoke the authorisations granted to their operators by submitting an application to this effect to the Hellenic Stock Exchanges S.A. (HELEX), at least five (5) working days before the dividend payment date.

(b)    By deposit at their International Bank Account Number (IBAN), at which the investor has declared that he wishes to collect cash distributions in accordance with article 13 of the Regulation on the operation of the Dematerialized Securities System (DSS) and decision number 6 of the ATHEXCSD BoD, as in force, for those investors that do not wish to collect them through their operators. This only concerns investors that have declared a Bank of Piraeus IBAN.

(c) Starting on July 2^nd, 2019 through the branch network of the BANK OF PIRAEUS for all other investors. In order to collect the dividend from the branch network of the Bank, investors must provide valid ID and the DSS account information. Payment to a third party can only take place if there is an authorization stating the full personal information of both the beneficiary as well as the person being authorized (first name, last name, fatherΆs name, ID No and TIN), and notarized by a public authority.

Collection of the dividend in case (c) above is possible through the BANK OF PIRAEUS until 31.12.2024 (i.e. until it is written-off) and takes place only with the presentation of valid ID and DSS account information, either in person or by a legally authorized representative. It is clarified that the right to collection of dividend is written-off after the lapse of five year from the end of the year in which respective claim was born. It should be noted that the Company does not possess own shares.

For additional clarifications or information, please contact the CompanyΆs Investor Relations Department (Tel.: 210-6877300, fax 210-6877400).