Following the completion of the offering by the Hellenic Financial Stability Fund of the shares of the company "National Bank of Greece SA", the Athens Stock Exchange announces the change of the investability weight (Free Float) of the company from 60% to 82% in the indices in which it participates.

The change will affect the composition of the following indices:

• ATHEX Composite Price Index
• ATHEX Total Return Composite Index
• FTSE/ATHEX Large Cap Index
• FTSE/ATHEX Market Index
• FTSE/ATHEX Banks Index

Moreover, the Weight Factor of the company in the ATHEX ESG Index will change from 57.00% to 77.90%.

All changes will be effective from the session of Wednesday November 22^nd, 2023.

The Athens Stock Exchange since its establishment in 1876, consistently participate in the financial and business developments in the country.

Athens Exchange Group (ATHEX Group), provides support to the Greek Capital Market. ATHEX Group operates the organized Equities and Derivatves markets, the alternative market and performs clearing and settlement of trades.

The Athens Stock Exchange, through its markets, offers solutions and financing tools to businesses, expands investor choice by providing a safe, stable and easy environment in full alignment with international practices and the European regulatory framework. It has held the ISO 22301:2012 international standard for Business Continuity, for all its companies, including all its operations as well as the products & services it provides.

In a period that the role of stock markets in exploring alternative ways of financing business, at a European level, is significantly enhanced, the Athens Exchange Group has taken a series of initiatives to highlight the attractiveness of the Greek Capital Market and the Greek companies to the international investment community and expand the variety of investment opportunities.

Its shares are traded on the Main Market of the Athens Stock Exchange (Symbol: EXAE).

The profiles of the ATHEX Group and its markets can be downloaded from the link. More information can be found in the website www.athexgroup.gr.

110 Athinon Ave. 10442 Athens, Greece, tel +30-210 3366 800, fax +30 210-3366 101