Hellenic Exchanges S.A. announces, pursuant to Law 3556/2007 (articles 3 and 21) and in conjunction with article 11 of decision 1/434/03.07.2007 of the Capital Market Commission, that EFG Eurobank Securities notified it: a) on 03.04.2008 that it purchased on 01.04.2008 4,524 common registered shares with a total value of euro 70,817.12; b) on 03.04.2008 that it sold on 01.04.2008 5,000 common registered shares with a total value of euro 77,800.58; c) on 03.04.2008 that it purchased on 02.04.2008 14,776 common registered shares with a total value of euro 239,730.72 and d) on 03.04.2008 that it sold on 02.04.2008 18,576 common registered shares with a total value of euro 302,893.82.