2018 FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS UNDER IFRS TO BE RELEASED ON FEBRUARY 21, 2019

ATHENS, Greece – January 21, 2019 – Hellenic Telecommunications Organization SA (ASE: HTO, OTC MARKET:HLTOY), the Greek telecommunications provider, announces that it will release its fourth quarter and full year 2018 financial results under IFRS on Thursday, February 21, 2019.

OTE's management will host a conference call at 17:00 (GREECE) / 16:00 (CONTINENT) / 15:00 (UK) /10:00 (EASTERN US) following the release, to review the results.

Details regarding the conference call dial-in and replay numbers as well as the live audio webcast of the conference call, following the results, can be accessed at:  https://ote.irwebpage.com/conference_calls/