Hellenic Telecommunications Organization S.A. announced the resignation of Mr. Athanasios Misdanitis as non-executive member of the Board of Directors and member of the Audit Committee of the company effective as of September 18, 2017. Additionally, the company's Board of Directors elected the non-executive member of the Board of Directors Mr. Andreas Psathas as replacement in the Audit Committee of the resigned member Mr. Athanasios Misdanitis.