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 15.04.2008 that it sold on 14.04.2008 2,200 HELEX common registered shares with a total value of euro 31,575
b) on 15.04.2008 that it sold on 14.04.2008 5,000 HELEX common registered shares with a total value of euro 71,632
c) on 15.04.2008 that it purchased on 14.04.2008 7,116 HELEX common registered shares with a total value of euro 101,358.76
d) on 16.04.2008 that it purchased on 15.04.2008 13,100 HELEX common registered shares with a total value of euro 190,330
e) on 16.04.2008 that it sold on 15.04.2008 13,400 HELEX common registered shares with a total value of euro 194,208
All of the abovementioned transactions were made for the derivatives market making account.