The WATER SUPPLY AND SEWERAGE COMPANY OF THESSALONIKI S.A., according to the provisions of L. 3556/2007 (articles 3 (xvi), (ββ) and article 21), in combination with the provision of article 11 of the 1/434/3.7.2007 decision of the Stock Market Committee, announces that Mr. Laskaridis Ioannis of Leonidas, General Manager, proceeded on the 22/1/2008 with the purchase of 500 common nominal stocks of the Company, of 2650, 00 Euro total value.