Athens, November 6, 2017 – Hellenic Telecommunications Organization S.A. (OTE S.A. or the Company) announces that the Board of Directors decided on November the 3^rd, 2017, the renewal of Mr. Michael Tsamaz' contract until the date of the Annual General Shareholders Meeting to be held in June 2021, under the same terms and conditions.

This announcement is issued as a Regulated Information, in accordance with Law 3556/2007 [article 3, par. 1 p (bb), and article 21] and Regulation No 596/2014 of the European Parliament and of the Council on market abuse.