Euronext N.V.

AGM Information • Mar 2, 2009

NYSE Euronext Notice of the 2009 Annual Meeting of Stockholders April 2, 2009 at 8:00 a.m. Eastern Daylight Saving time At 11 Wall Street New York, New York 10005, USA

This is intended for NYSE Euronext stockholders to provide notice of the upcoming Annual Meeting of Stockholders ("AMS") scheduled to be held on Thursday, April 2, 2009 at NYSE Euronext, 11 Wall Street, New York, New York 10005, USA, at 8:00 a.m. Eastern Daylight Saving time.

Items of business

• x Proposal to elect eighteen directors to our Board of Directors for one-year terms expiring at the next annual meeting of stockholders
• x Proposal to ratify the appointment of PricewaterhouseCoopers LLP as independent auditor for the fiscal year ending December 31, 2009
• x Stockholder proposal relating to certificated shares
• x Stockholder proposal relating to simple majority voting
• x Transact such other business as may properly come before the Annual Meeting

NYSE Euronext is a global company incorporated in the United States; its corporate language is English. Further details on the agenda and items to be voted are contained in the NYSE Euronext Proxy Statement and 2008 Annual Report on Form 10-K available on NYSE Euronext website (http://ir.nyse.com) and at http://materials.proxyvote.com/629491. Stockholders may also request a copy from NYSE Euronext's proxy solicitor, MacKenzie Partners, Inc. (London Office) (contact information below) or by contacting NYSE Euronext – Paris (telephone: +33 (0)1 4927 5860; facsimile: +33 (0)1 4927 1113) or at the company's headquarters located 11 Wall Street, New York, 10005 New York, USA, or at its Paris Office located 39, rue Cambon 75001 Paris, France.

Record Date

The Board of Directors determined that the stockholders entitled to attend and cast votes at the AMS will be those who were recorded as having those rights at the close of business on Tuesday, February 10, 2009 (the record date), regardless of whether they are stockholders at the time of the AMS. A list of the stockholders of record as of February 10, 2009 will be available for inspection during ordinary business hours at the office of NYSE Euronext, 11 Wall Street, New York, New York, 10005, for ten days prior to the AMS, as well as at the AMS.

NYSE Euronext Stockholders

NYSE Euronext common stock can be held in two ways:

• As a stockholder of record (or registered stockholders), your stock is registered in your name on the records of NYSE Euronext maintained by its transfer agent, Computershare Limited;
• As a stockholder in "street name" (or bearer shares), your stock is held indirectly through a broker, bank or similar institution.

Stockholders of Record

All stockholders of record will receive the proxy materials by mail or a similar means containing a notice of the AMS, the proxy statement, including the agenda, the 2008 Annual Report on Form 10-K and details of the procedures for voting and attending the AMS. Stockholders who have not received their proxy materials should contact NYSE Euronext's proxy solicitor, MacKenzie Partners, Inc. (London office) (contact information below). To vote by internet and to receive materials electronically, go to the website www.proxyvote.com that appears on your proxy card. All voting forms must be received no later than 11:59 p.m. New York time, on Wednesday, April 1, 2009.

Stockholders holding stock indirectly through a broker, bank or similar institution

Stockholders holding stock indirectly through a broker, bank or similar institution are not included in the stockholder records of NYSE Euronext. These stockholders should receive proxy materials from their broker, bank or other institution. Stockholders of bearer shares who wish to vote or attend the meeting should contact their broker, bank or similar institution for instructions. Stockholders who hold their stock through a non-U.S. broker, bank or similar institution, must submit their voting forms in order that they are received by MacKenzie Partners, Inc. (London Office) (contact information below) no later than 11:59 p.m. New York time, on Wednesday, April 1, 2009.

Registration and Identification of persons attending the Annual Meeting of Stockholder

Registration for attending the AMS will take place at NYSE Euronext on the morning of April 2, 2009 between 7:00 and 8:00 a.m. Eastern Daylight Savings time. Any stockholder who plans to attend the meeting in person will need to bring an acceptable form of photo identification, such as a passport or driver's license and proof of ownership of NYSE Euronext common stock as of the close of business on February 10, 2009. Stockholder attendees must submit to screening by metal detector and x-ray examination of all packages, handbags and luggage.

Webcast of Annual Meeting of Stockholder

The AMS will be available via webcast at the time of the meeting (8:00 a.m. EDT // 13.00 GMT // 14.00 CET) and will be available for replay shortly after the meeting. In order to access the webcast and register, please go to www.nyseeuronext.com under the heading "Investor Relations – Calendar & Presentations" shortly before the meeting time and follow the instructions provided. Please note that stockholders will not be able to vote their shares or ask questions via the webcast.

Additional Information on voting or attending the Annual Meeting of Stockholders

For additional information on attending the NYSE Euronext Annual Meeting of Stockholders or voting your stock, please contact NYSE Euronext proxy solicitor MacKenzie Partners, Inc. (London office) (contact information below) or NYSE Euronext Investor Relations - Paris office (telephone: +33 (0)1 4927 5860; facsimile: +33 (0)1 4927 1113).

Proxy solicitor

MacKenzie Partners, Inc. (London Office) 17 Cavendish Square London W1G 0PH United Kingdom Telephone: +44 (0) 203 178 8057 Facsimile: +44 (0) 207 504 8665 Email: proxy@mackenziepartners.com

March 2, 2009