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 22.08.2008 that it sold on 20.08.2008 3,400 HELEX common registered shares with a total value of euro 23,942.00
2. on 22.08.2008 that it purchased on 20.08.2008 9,400 HELEX common registered shares with a total value of euro 67,462.00
3. on 22.08.2008 that it purchased on 21.08.2008 6,200 HELEX common registered shares with a total value of euro 43,960.00
4. on 22.08.2008 that it sold on 21.08.2008 2,500 HELEX common registered shares with a total value of euro 17,546.00
The above transactions, excluding number four, were made for the derivatives market making account.