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 decision 1/434/03.07.2007 of the Capital Market Commission, that EFG Eurobank Securities notified it:
a) on 12.06.2008 that it purchased on 11.06.2008 11,000 HELEX common registered shares with a total value of euro 115,550.00
b) on 12.06.2008 that it purchased on 11.06.2008 4,500 HELEX common registered shares with a total value of euro 46,340.00
c) on 12.06.2008 that it sold on 11.06.2008 11,000 HELEX common registered shares with a total value of euro 115,940.00
d)on 12.06.2008 that it sold on 11.06.2008 5,700 HELEX common registered shares with a total value of euro 59,513.76
The above mentioned transactions b) and d) were made for the derivatives market making account.