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 06.10.2008 that it purchased on 03.10.2008 989 HELEX common registered shares with a total value of euro 8,244.04
2. on 06.10.2008 that it sold on 03.10.2008 200 HELEX common registered shares with a total value of euro 1,664.00
3. on 06.10.2008 that it sold on 03.10.2008 69,930 HELEX common registered shares with a total value of euro 582,627.34
4. on 07.10.2008 that it purchased on 06.10.2008 901 HELEX common registered shares with a total value of euro 7,172.16
5. on 07.10.2008 that it sold on 06.10.2008 3,700 HELEX common registered shares with a total value of euro 30,133.00
All the above transactions, excluding number 3, were made for the derivatives market making account.