MASTERPLAST Nyilvánosan Működő Részvénytársaság

Regulatory Filings • Jul 29, 2025

ANNOUNCEMENT

Extraordinary communication

In compliance with its obligation to provide notification of extraordinary events under Act CXX of 2001 on the Capital Market (hereinafter: Capital Market Act), ALTEO Energiaszolgáltató Nyilvánosan Működő Részvénytársaság (registered office: H-1033 Budapest, Kórház utca 6-12, company registration number: Cg.01-10-045985) (hereinafter: Company or ALTEO) hereby provides the following information.

In 2023, the Company developed and established its own Green Financing Framework, which, due to recent regulatory changes, needed to be updated in order to issue green bonds or arrange green loans linked to green objectives, should ALTEO deem this justified based on its financing needs.

With its certified Green Financing Framework and the related commitments, the Company continues to emphasize its sustainability efforts, which form an integral part of its strategy.

The Company has also published the updated framework and its related SPO ertification on its website simultaneously with the release of this announcement.

Budapest, July 29, 2025

ALTEO Nyrt.