Magyar Telekom Telecommunications Plc

Transaction in Own Shares • Dec 15, 2025

Investor Release Magyar Telekom

IR contacts:	Position:	Telephone:	E-mail address:
Diána Párkányi-Várkonyi	Capital Market Relations Hub Lead	+36-1-481-7676	varkonyi.diana.annamaria@telekom.hu
Rita Walfisch	Investor Relations manager	+36-1-457-6084	walfisch.rita@telekom.hu
Gabriella Pászti	Investor Relations manager	+36-1-458-0332	paszti.gabriella@telekom.hu

Magyar Telekom announces termination of its Level I ADR program

Budapest – December 15, 2025 – Magyar Telekom (Reuters: MTEL.BU and Bloomberg: MTELEKOM HB, hereinafter the "Company"), the leading Hungarian telecommunications service provider, hereby announces that it will discontinue its Sponsored Level I American Depositary Receipt (ADR) program, effective January 20, 2026, from which date ADRs will continue to trade in the United States on an unsponsored basis provided by JPMorgan.

This decision reflects Magyar Telekom's ongoing focus on simplifying administrative processes and reducing non-essential costs, while ensuring continued access for US investors to trade the Company's shares. Magyar Telekom will continue to engage constructively with US investors and remains committed to transparent disclosure of its financial and operational performance for the benefit of all stakeholders. In accordance with the current Deposit Agreement, JPMorgan will provide a termination notice containing relevant information for ADR holders regarding required actions.

Following the discontinuation of the Sponsored Level I ADR program, any ADRs representing Magyar Telekom's ordinary shares will continue to trade in the United States on an unsponsored, over-thecounter basis, established at the discretion of JPMorgan.

Magyar Telekom ordinary shares remain listed on Budapest Stock Exchange in Hungary and the Company remains subject to the rules of the Budapest Stock Exchange and all the laws and regulations applicable to listed companies in Hungary.

This investor news may contain forward-looking statements. Statements that are not historical facts, including statements about our beliefs and expectations, are forward-looking statements. These statements are based on current plans, estimates and projections, and therefore should not have undue reliance placed upon them. Forward-looking statements speak only as of the date they are made, and we undertake no obligation to update publicly any of them in light of new information or future events.

Forward-looking statements involve inherent risks and uncertainties. We caution you that a number of important factors could cause actual results to differ materially from those contained in any forward-looking statement. Such factors are described in, among other things, our Annual Reports for the year ended December 31, 2024 available on our website at https://www.telekom.hu.