Athens, May 21, 2018 – Hellenic Telecommunications Organization S.A. (“OTE” or the “Company”), announces that within the frame of the Own Share Buy Back Programme, on 18/5/2018, purchased 48,461 own shares, through National Securities S.A., for an average price of €10.7214 per share, of total value €519,569.78, in accordance with article 16 of Codified Law 2190/1920 and the resolutions of the Company's competent bodies.  

Following the aforementioned purchase, the Company holds 2,650,865 own shares, 0.541% of the total shares of the Company.

The announcement is issued in accordance with (EE) Regulation No 596/2014 of the European Parliament and of the Council dated 16/4/2014, the (EE) Commission Delegated Regulation 2016/1052 dated 8/3/2016 and the Athens Exchange Rulebook (paragraph 4.1.3.14).