Disclosure notice StoraEnso

Disclosure Notice Stockholm, September 18, 2000 Investor AB’s share of votes and capital in Stora Enso Oyj has changed following Stora Enso’s share issue on September 11, 2000, to the shareholders of Consolidated Papers, Inc. Investor’s holding, after the transaction, amounts to 61,991,786 Series A shares and 18,334,862 Series R shares, which corresponds to 22.7 percent of votes and 8.7 percent of capital. Investor’s previous holding amounted to 24.1 percent of votes and 10.2 percent of capital. Of the current holding, 2,433,900 Series R shares belong to the subsidiary InvestorsTrading AB. This disclosure has been made in accordance with the Finnish Securities Act, Chapter 2, §9-10. INVESTOR AB For further information: Fredrik Lindgren, Investor Relations, 08-614 20 31, 070-624 20 31 ------------------------------------------------------------ This information was brought to you by BIT http://www.bit.se The following files are available for download: http://www.bit.se/bitonline/2000/09/18/20000918BIT00440/bit0001.doc http://www.bit.se/bitonline/2000/09/18/20000918BIT00440/bit0002.pdf

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Investor is the leading owner of Nordic-based international companies, founded by the Wallenberg family a hundred years ago. We own significant minority or majority interests in high quality companies. Through our participation on the boards of directors, we work for continuous improvement of the performance of the companies. With our industrial experience, network and financial strength we strive to make our companies best-in-class. Our cash flow allows us to support strategic initiatives in our companies, capture investment opportunities and provide our shareholders with a dividend. Our Core Investments include listed holdings Atlas Copco, SEB, ABB, Ericsson and the operating subsidiary Mölnlycke Health Care.