Announcement of regulated information according to Law 3556/2007

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 and Law 3556/2007, that it was notified that the Chief Executive Officer Mr. Socrates Lazaridis purchasedon 21.05.2012, 3,000 HELEX common registered shares with a total value of €6,281.66.