GEK S.A. informs the investors that, in compliance with article 4 par. 4 of the Regulation no. 2273/2003 of the Commission of the European Communities and according to article 16 par. 5 of the Codified Law 2190/1920, as amended and currently in force, as well as by virtue of the Decision of the Regular General Assembly of its Shareholders dated 27.06.2007 and the Decision of the Board of Directors dated 28.06.2007, proceeded on September 12, 2007, through the member of the A.S.E. PRAXIS INTERNATIONAL S.A., with the purchase of 5.000 GEK's shares at an average price of 11,18 euros per share and at with a total transaction value of 55.900,00 euros. GEK also proceeded on September 17, 2007, through the member of the A.S.E. NATIONAL SECURITIES S.A., with the purchase of 8.000 GEK's shares at an average price of 11,0294 euros per share and at with a total transaction value of 88.235,20 euros.