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 19.06.2008 that it purchased on 17.06.2008 1,000 HELEX common registered shares with a total value of euro 10,270.00
b) on 19.06.2008 that it sold on 17.06.2008 52,200 HELEX common registered shares with a total value of euro 539,459.36
c) on 19.06.2008 that it purchased on 18.06.2008 4,100 HELEX common registered shares with a total value of euro 42,688.00
d) on 19.06.2008 that it sold on 18.06.2008 6,600 HELEX common registered shares with a total value of euro 69,194.96
The above mentioned transactions were made for the derivatives market making account.