Hellenic Exchanges informs investors, in accordance with §2 art. 19 of Law 3556/2007 and ahead of the Annual General Meeting of shareholders, which will take place on Wednesday May 23^rd 2012 at 18:00, in Athens, at the headquarters of the company (110 Athinon Ave., ‘HERMES' hall), that it intends to modify article 5 of its Articles of Association, as a result of the proposed reduction of the share capital by the mount of EUR5,229,485.04, which will take place through a EUR0.08 reduction in the stock par value (from EUR0.87 to EUR0.79) and distribution of that amount to shareholders.

The modification is described in the Draft modification of article 5 of the Articles of Association, which is available in electronic form on the website of the Company (www.helex.gr), and Athens Exchange (www.athex.gr).