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 through the member of the A.S.E. PRAXIS INTERNATIONAL S.A., with the purchase of GEK's shares as following: 1) on 5/11/2007 5.000 shares were bought at an average price of 13,00 euros per share and at with a total transaction value of 65.000,00 euros, 2) on 6/11/2007 5.000 shares were bought at an average price of 12,90 euros per share and at with a total transaction value of 64.500,00 euros.