Hellenic Telecommunications Organization S.A.

Major Shareholding Notification • May 26, 2021

National Storage Mechanism | Additional information

RNS Number : 9363Z

Hellenic Telecomms Organization S A

26 May 2021

Announcement of Regulated Information

Athens, May 26, 2021 - Hellenic Telecommunications Organization S.A. ("OTE" or the "Company"), announces that:

On May 26, 2021, Massachusetts Financial Services Company (MFS), with registered office in Boston, USA, notified OTE S.A. that on 21st May 2021, its (indirect) participation in the share capital of OTE S.A. and the corresponding voting rights held by it was lower than the threshold of 5% of the share capital of the Company and voting rights. According to the relevant notification, the number of shares and the corresponding voting rights held by MFS, on behalf of its clients, i.e. mutual funds and institutional account clients, is 23,007,560, which represents 4.99% of the total voting rights of OTE S.A.

The announcement is issued as a Regulated Information, in accordance with Law 3556/2007, [article 3, par. 1 (p) and article 21].

FOR FURTHER INFORMATION:

OTE GROUP INVESTOR RELATIONS Eleni Boua Department of Financial Communication & Relations with Regulatory Authorities Τel. + 30 210-6117364 Fax: + 30 210-6111030 E-mail: iroffice@ote.gr

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