Hellenic Exchanges S.A. announces, pursuant to Law 3556/2007 (articles 3 and 21) and in conjunction with article 11 of resolution 1/434/03.07.2007 of the Capital Market Commission, that EFG Eurobank Securities notified it:

1. on 27.08.2008 that it purchased on 25.08.2008 4,000 HELEX common registered shares with a total value of 29,414.40 Euro

2. on 27.08.2008 that it sold on 25.08.2008 5,600 HELEX common registered shares with a total value of 41,896.00 Euro

3. on 27.08.2008 that it purchased on 26.08.2008 300 HELEX common registered shares with a total value of 2,214.00 Euro

4. on 27.08.2008 that it sold on 26.08.2008 2,000 HELEX common registered shares with a total value of 14,750.00 Euro

The above transactions were made for the derivatives market making account.