Hellenic Telecommunications Organization S.A.

Report Publication Announcement • Jul 2, 2025

National Storage Mechanism | Additional information

RNS Number : 4618P

Hellenic Telecomms Organization S A

02 July 2025

Announcement

ATHENS , Greece - July 2, 2025 - Hellenic Telecommunications Organization SA (ASE: HTO, OTC MARKET: HLTOY ) , announces that it will release its Q2 & six months 2025 financial results on Wednesday, August 6, 2025, before the opening of the Athens Exchange.

OTE's management will host a conference call to review the results on the same date at 13:00 (GREECE) / 12:00 (CONTINENT) / 11:00 (UK) /06:00 (EASTERN US).

Please find below details regarding the conference call dial-in and replay numbers as well as the live audio webcast:

Conference Call Details

Date: Wednesday, 6th August 2025

Time: 13:00 Athens Time (C.E.S.T. +1)

                            Conference Phone GR                             +30 210 9460 800

                            Conference Phone DE                             +49 (0) 69 2222 4493

Conference Phone UK & Intl                      +44 (0) 203 059 5872

                               Conference Phone USA                              +1 516 447 5632

We recommend that you call any of the above numbers 5 to 10 minutes before the conference call is scheduled to start.

Webcast Details

To participate via webcast you may join by linking at the internet site: https://87399.themediaframe.eu/links/otegroup250806.html

If you experience any difficulty please call + 30 210 9460803

Digital Playback Details

A digital playback of the conference call will be available approximately one hour after the end of the conference call until end of business day of 8th September 2025.

If you are interested to listen to the play back, please dial one of the following

                                      Playback Phone GR                           +30 210 9460 929

                                      Playback Phone UK                            +44 (0) 203 0595874

                                      Playback Phone US                         +1 631 257 0626

The playback conference call number is: 808#

FOR FURTHER INFORMATION

OTE GROUP INVESTOR RELATIONS

Τel. +30 210-6117364, +30 210-6332342 +30 210-6118190

E-mail: iroffice@ote.gr , eboua@ote.gr

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy.

END

NOREADXAELASEFA