HELLENIC EXCHANGES - ATHENS STOCK EXCHANGE S.A.

Share buy-back.

HELLENIC EXCHANGES S.A. HOLDING, CLEARING, SETTLEMENT AND REGISTRY (the Company) informs investors that, based on §4 article 4 of the European Commission Regulation 2273/2003, and in implementation of the resolution of the Annual General Meeting of shareholders of the Company of 14.5.2008, it purchased own shares, as follows:
- On 17.10.2008 166,000 own shares were purchased, at an average price of EUR 7.65 per share, and total transaction cost of EUR1,270,633.40.
Share buy-backs are taking place through the members of Athens Exchange Alpha Finance, ABG Securities, EFG Eurobank Securities and Midas Securities.
Following the abovementioned purchases, the Company owns 3,818,000 own shares (5.42% of the total 70,485,563 shares outstanding).