HELLENIC EXCHANGES - ATHENS STOCK EXCHANGE S.A.

Announcement of regulated information according to Law 3556/2007

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 14.08.2008 that it purchased on 13.08.2008 700 HELEX common registered shares with a total value of euro 5,222.00
2. on 14.08.2008 that it sold on 13.08.2008 5,500 HELEX common registered shares with a total value of euro 40,720.00
3. on 18.08.2008 that it purchased on 14.08.2008 10,400 HELEX common registered shares with a total value of euro 76,570.00
4. on 18.08.2008 that it sold on 14.08.2008 140 HELEX common registered shares with a total value of euro 1,038.80
5. on 18.08.2008 that it sold on 14.08.2008 1,400 HELEX common registered shares with a total value of euro 10,346.00
The above transactions, excluding number four, were made for the derivatives market making account.