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 25.07.2008 that it purchased on 23.07.2008 2,000 HELEX common registered shares with a total value of euro 18,520.00
2. on 25.07.2008 that it sold on 23.07.2008 3,300 HELEX common registered shares with a total value of euro 30,634.00
3. on 25.07.2008 that it purchased on 24.07.2008 9,000 HELEX common registered shares with a total value of euro 88,135.00
4. on 25.07.2008 that it sold on 24.07.2008 1,300 HELEX common registered shares with a total value of euro 12,370.88
The above mentioned transactions were made for the derivatives market making account.