Announcement Related To NYSE Group-Euronext Combination

Within the framework of the proposed merger, NYSE Group, Inc. (NYSE: NYX) and Euronext N.V. (Euronext) have agreed that following their combination the NYSE Euronext Board of Directors will be composed of an equal number of Americans (11) and Europeans (11). The Board of Directors will be composed of 22 directors, including: the directors of NYSE Group (including both Chairman and Chief Executive Officer), the members of the Euronext Supervisory Board (including the Chairman of the Euronext Supervisory Board), and the Chief Executive Officer of Euronext, and one European to be designated. It will be the decision of the Nomination Committee and the Board of Directors, both equally composed of Americans and Europeans, to maintain this parity.