Athens, July 6, 2017 – Hellenic Telecommunications Organization S.A. (OTE S.A. or Company), 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 announces that:

On 5/7/2017, the Company proceeded to the transfer (Over-The-Counter) of 11,000 own shares to the Chairman and Chief Executive Officer, Mr. Michael Tsamaz, in the context of the implementation of the Share Matching Plan, as approved by the Company's Shareholders' General Meeting. According to this plan, OTE transferred those shares at zero cost, following the purchase (through the stock exchange) by the Chief Executive Officer of equal number of OTE shares and holding them for 3 years.

In the above context, Mr. Michael Tsamaz, on 6/7/2017 notified the Company that on 5/7/2017 he acquired 11,000 OTE shares according to the terms of the Plan.

These shares represent 0.002% of the Company's paid-up share capital. Following the transfer, the Company holds 1,343,110 own shares, 0.274% of the total shares of the Company.