Announcement for the Availability of the Prospectus

The company “MYTILINEOS S.A.” (the “Issuer” or the “Company”) hereby announces that as of 28.06.2023 it makes available to investors, the Prospectus, as approved by the Board of Directors of the Hellenic Capital Market Commission, at its meeting on 28.06.2023, which was prepared in accordance with Regulation (EU) 2017/1129, delegated Regulations (EU) 2019/979 and 2019/980, and articles 57-68 of Greek Law 4706/2020, as in force, in relation to the issuance by the Company of a common bond loan (the “CBL”), of a total nominal amount of up to €500,000,000, with a duration of seven (7) years, divided into up to 500,000 dematerialized, common, bearer bonds, each of a nominal value of €1,000 (the “Bonds”), in accordance with the resolution of the Issuer's Board of Directors, dated 26.06.2023 (the “Issuance”). The Bonds to be issued, will be offered for subscription to investors by means of a public offering in Greece (the “Public Offering”), via the electronic book-building service (the “EBB”) of the Athens Exchange, registered with the Dematerialized Securities System, and admitted to trading on the Fixed Income Securities segment of the Regulated Market of the Athens Exchange (the “Athens Exchange”).

The Athens Exchange approved on 27.06.2023 the admission to trading of the Bonds in the Fixed Income Securities Segment of the Regulated Market of the Athens Exchange, under the condition of the approval of the Prospectus by the Hellenic Capital Market Commission and the successful completion of the Public Offering of the Company's Bonds.

The expected timetable for the completion of the Public Offering of the CBL issuance and the admission to trading of the Bonds in the Fixed Income Securities Segment of the Regulated Market of the Athens Exchange is below:

* In the event that the Issuance is cancelled, investors will be informed within two (2) business days about the means and date of release of their funds.

It is noted that the above timetable is dependent upon a series of uncertain factors and for this reason is subject to change. In any case, investors will be informed with a subsequent announcement by the Company.

The Prospectus, as approved by the Board of Directors of the Hellenic Capital Market Commission on 28.06.2023, will be available to the investors in electronic form, in accordance with article 21(2) of Regulation (EU) 2017/1129, on the following websites:

• Athens Exchange: https://www.athexgroup.gr/el/web/guest/companies-new-listings
• the Company https://www.mytilineos.com/investor-relations/bonds/ and https://www.mytilineos.com/el/ependytikes-sxeseis/omologa/,
• Eurobank S.A.: https://www.eurobank.gr/el/omilos/enimerosi-ependuton/enimerotika-deltia/enimerotika-deltia-sumboulos-anadoxos-trapeza-eurobank-ergasias-ae
• Alpha Bank S.A.: https://www.alpha.gr/el/idiotes/ependuseis/xrimatistiriakes-upiresies/enimerotika-deltia
• National Bank of Greece S.A.: https://www.nbg.gr/el/footer/enimerwtika-deltia
• Piraeus Bank: https://www.piraeusholdings.gr/mytilineos2023
• Euroxx Securities S.A.: https://www.euroxx.gr/gr/content/article/mytilineosbond
• Optima Bank S.A.: https://www.optimabank.gr/business/investment-banking/enimerotikapliroforiaka-deltia

The Prospectus is addressed only to investors (Greek and foreigners) within the Greek territory. The Bonds have not been registered and will not be registered in accordance with any applicable legislation on securities offerings in any other jurisdiction than Greece.

Moreover, throughout the term of the Public Offering, the Prospectus, if requested, will also be available to investors in hardcopy, free of charge, at the offices of the Company, (8 Artemidos Str., 15125 Marousi, Greece), as well as at the offices of the Joint Coordinators and Bookrunners, “Eurobank S.A.” (10 Filellinon Str., 10557, tel. 210 3720000), “Alpha Bank S.A.” (40 Stadiou Str., 10252, Athens, tel. 210 3260000), “NATIONAL BANK OF GREECE S.A.” (86 Aiolou Str., 102 32, Athens, tel. 210 3341000),  “PIRAEUS BANK” (4 Amerikis Str., 10564, Athens, 210 3288000), and the Underwriters “Euroxx Securities S.A.” (7 Palaiologou Str., 15232, Chalandri, tel. 210 6879400) and “OPTIMA BANK S.A.” (32 Aigialeias Str., Maroussi, 151 25, tel. 210 8173000). In accordance with article 21(5) of the Prospectus Regulation, the Hellenic Capital Market Commission publishes the approved prospectuses on its website (http://www.hcmc.gr/el_GR/web/portal/elib/deltia).

For more information, investors may contact during working days and hours the Company’s offices, 8 Artemidos Str., 151 25, Maroussi, Greece, website: www.mytilineos.com, (Mr. Nikos Lattas, Responsible Person For Shareholders Service, tel. number 210 68 77300).

Maroussi, 28 June 2023

MYTILINEOS S.A.

For further information, please contact:

Investors Relations

Tel. +30 210-6877300 | Fax +30 210-6877400 | E-mail: ir@mytilineos.gr

Press Office

Tel. +30 210-6877346 | Fax +30 210-6877400 | E-mail: communications@mytilineos.com

MYTILINEOS:

Founded in Greece in 1990, MYTILINEOS is an industrial and energy multinational company, listed on the Athens Stock Exchange, with a consolidated turnover and EBITDA of €6.3 billion and €823 million respectively. More than 4,820 direct and indirect workers in Greece and abroad. The Company is focused on sustainability, it has set itself the goal of reducing carbon dioxide (CO2) emissions by at least 30% by 2030 and achieving a neutral footprint in its total business activity by 2050, based on ESG performance indicators for Environment, Society and the Governance.

For more information, please visit: www.mytilineos.com | Facebook | Twitter | YouTube | LinkedIn