Purchase of Own Shares

Athens, May 8, 2018 - Hellenic Telecommunications Organization S.A. ("OTE" or the "Company"), announces that within the frame of the Own Share Buy Back Programme, on 7/5/2018, purchased 42,100 own shares, through National Securities S.A., for an average price of €11.6732 per share, of total value €491,443.51, 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 2,239,960 own shares, 0.457% 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).

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