Notification about a significant change in the number of voting rights (Law 3556/2007)

HELLENIC EXCHANGES - ATHENS STOCK EXCHANGE S.A.

Notification about a significant change in the number of voting rights (Law 3556/2007)

JPMORGAN ASSET MANAGEMENT (UK) LTD informed the Company in writing on 07.06 and 11.06.2013 that, because of a triggering transaction on 04.06.2013 it now indirectly holds 5.06% of the share capital of HELEX.