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

27 September 2007 - The NATIONAL BANK OF GREECE informed the Company by letter on 27.09.2007 that on 26.09.2007 it sold common registered shares with a voting right of HELLENIC EXCHANGES S.A. HOLDING CLEARING SETTLEMENT & REGISTRY (HELEX) that it owned. Following the abovementioned sale, the NATIONAL BANK OF GREECE owns indirectly 0.45% (from 8.44% based on the previous such notification) of the share capital of HELEX.