NASDAQ OMX Group (NDAQ)

Additional Information About this Transaction

In connection with the proposed business combination transaction, a preliminary proxy statement of NASDAQ and other materials have been filed with the United States Securities and Exchange Commission (“SEC”) and are publicly available. Investors and security holders are urged to read the preliminary proxy statement and the definitive proxy statement when it becomes available, as well as other applicable documents regarding the proposed business combination transaction, because those documents contain, or will contain, important information. You may obtain a free copy of those documents and other related documents filed by NASDAQ with the SEC at the SEC’s website at www.sec.gov. The proxy statement and the other documents may also be obtained for free by accessing NASDAQ’s website at http://www.nasdaq.com.

NASDAQ s and other members of management and employees may be deemed to be participants in the solicitation of proxies from NASDAQ stockholders in respect of the transactions described in this communication. You can find information about NASDAQ’s executive officers and directors in NASDAQ’s definitive proxy statement filed with the SEC on April 20, 2007. You can obtain free copies of these documents and of the proxy statement prospectus from NASDAQ by accessing NASDAQ’s website at http://www.nasdaq.com. Additional information regarding the interests of such potential participants will be included in the proxy statement and the other relevant documents filed with the SEC when they become available.

Additional Information About this Transaction

On August 7, 2007, NASDAQ filed with the SEC a Registration Statement on Form S-4 that includes a preliminary proxy statement of NASDAQ that also constitutes a prospectus of NASDAQ. Investors and security holders are urged to read the preliminary proxy statement/prospectus and the definitive proxy statement/prospectus when it becomes available, as well as other applicable documents regarding the proposed business combination transaction, because those documents contain, or will contain, important information. You may obtain a free copy of those documents and other related documents filed by NASDAQ with the SEC at the SEC’s website at www.sec.gov. The proxy statement/prospectus and the other documents may also be obtained for free by accessing NASDAQ’s website at http://www.nasdaq.com and OMX’s website at http://www.omxgroup.com.

NASDAQ and its directors and executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies from NASDAQ stockholders in respect of the transactions described in this communication. You can find information about NASDAQ’s executive officers and directors in NASDAQ’s definitive proxy statement filed with the SEC on April 20, 2007. You can obtain free copies of these documents and of the proxy statement/prospectus from NASDAQ by accessing NASDAQ’s website at http://www.nasdaq.com. Additional information regarding the interests of such potential participants will be included in the proxy statement/prospectus and the other relevant documents filed with the SEC when they become available.

In the event of inconsistencies between the English version of this press announcement and any translations thereof, the English version shall prevail.