NASDAQ OMX Group (NDAQ)

Supported by Key OMX and NASDAQ Shareholders

The boards of directors of The NASDAQ Stock Market, Inc. (“NASDAQ”) and OMX AB (publ) (“OMX”) jointly announce that they have entered into an agreement (the “Transaction Agreement”) to combine the two companies (the “Combination” or the “Transaction”), creating the world’s premier exchange and technology company. The Combination will create the largest global network of exchanges and exchange customers linked by technology. The Combination will provide significant benefits for customers, shareholders and other stakeholders in both companies.

The new group, to be called The NASDAQ OMX Group (the “Combined Group”), brings together two companies with a common culture and vision of innovation, competitiveness and pioneering technological expertise. NASDAQ OMX Group combines two highly complementary businesses, uniting NASDAQ’s leading global brand, highly efficient electronic trading platform and track record of customer focused innovation with OMX’s global technology services platform and customer base, efficient Nordic Exchange, derivatives capabilities and track record of successful cross-border exchange integrations.

The Combination will be effected through a cash and stock tender offer (the “Offer”) by NASDAQ for all outstanding shares in OMX. The consideration offered is equivalent to 0.502 new NASDAQ shares plus SEK94.3 in cash for each OMX share. Based on NASDAQ’s closing price on 23 May, 2007, the Offer values OMX at SEK208.1 per share¹, equivalent to SEK25.1 billion ($3.7 billion) and represents a premium of 19 percent to the closing price of SEK174.5 per OMX share on 23 May, 2007, the last full trading day prior to the announcement of the Offer

¹ Based on NASDAQ’s closing share price of $33.19 on 23 May, 2007, the last full trading day prior to the announcement of the Offer, and a SEK/$ exchange rate of 6.83

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and a premium of 25 percent to the volume weighted average price of SEK165.9 per OMX share over the 20 trading days up to and including 23 May, 2007.

Supported by Key OMX and NASDAQ Shareholders

The boards of directors of The NASDAQ Stock Market, Inc. (“NASDAQ”) and OMX AB (publ) (“OMX”) jointly announce that they have entered into an agreement (the “Transaction Agreement”) to combine the two companies (the “Combination” or the “Transaction”), creating the world’s premier exchange and technology company. The Combination will create the largest global network of exchanges and exchange customers linked by technology. The Combination will provide significant benefits for customers, shareholders and other stakeholders in both companies.

The new group, to be called The NASDAQ OMX Group (the “Combined Group”), brings together two companies with a common culture and vision of innovation, competitiveness and pioneering technological expertise. NASDAQ OMX Group combines two highly complementary businesses, uniting NASDAQ’s leading global brand, highly efficient electronic trading platform and track record of customer focused innovation with OMX’s global technology services platform and customer base, efficient Nordic Exchange, derivatives capabilities and track record of successful cross-border exchange integrations.

The Combination will be effected through a cash and stock tender offer (the “Offer”) by NASDAQ for all outstanding shares in OMX. The consideration offered is equivalent to 0.502 new NASDAQ shares plus SEK94.3 in cash for each OMX share. Based on NASDAQ’s closing price on 23 May, 2007, the Offer values OMX at SEK208.1 per share¹, equivalent to SEK25.1 billion ($3.7 billion) and represents a premium of 19 percent to the closing price of SEK174.5 per OMX share on 23 May, 2007, the last full trading day prior to the announcement of the Offer and a premium of 25 percent to the volume weighted average price of SEK165.9 per OMX share over the 20 trading days up to and including 23 May, 2007.