Börje Ekholm new CEO of Investor as of September 1, 2005

Investor AB’s Board of Directors has today appointed Börje Ekholm as new President and Chief Executive Officer effective September 1, 2005. He succeeds Marcus Wallenberg, who is also leaving Investor’s board as of September 1. Börje Ekholm, 42, has been employed by Investor since 1992. He has been Executive Vice President and Head of the New Investments business area since 2000 and is currently a director on the boards of several of Investor’s holdings, including WM-data in Sweden and Tessera Technologies, Inc. in the U.S. “After six intensive years as President and CEO – and against the background of my proposed chairmanship of SEB – it is a natural step for me to hand over Investor to a new CEO. Investor has developed strongly over the past two years and has a solid financial position today,” comments Marcus Wallenberg. “I am excited about taking over the leadership of Investor and I feel confident about taking the company forward. Investor is well positioned to successfully develop companies and generate long-term attractive returns for shareholders,” says Börje Ekholm. INVESTOR AB For further information: Fredrik Lindgren, Vice President, Corporate Communications: +46 8 614 20 31, +46 735 24 20 31