Invitation to the Media and Capital Market in conjunction with the release of Investor AB's Net Asset Value Report for

Invitation to the Media and Capital Market in conjunction with the release of Investor AB's Net Asset Value Report for January-September 2004 Press and Analyst Meeting The meeting will be held in Stockholm, Tuesday, October 12, 2004 at 11:00 a.m. CET. The venue is Investor's head office at Arsenalsgatan 8C. President and CEO Marcus Wallenberg and CFO Lars Wedenborn will present the Net Asset Report for the period January-September 2004. The presentation material will be published on www.investorab.com after the meeting. Teleconference and Webcast The teleconference will be held on Tuesday, October 12, at 3:00 p.m. CET. To participate, call +44 20 7162 0192, +1 334 323 6203 or +46 8 505 201 14. You can also view and listen to the proceedings of the conference live on Investor's website www.investorab.com, or afterwards on-demand. To participate in the press and analyst meeting or teleconference, please e-mail Helen Jönsson at helen.jonsson@investorab.com or +46 8 614 2046. The report is expected to be released around 8:30 a.m. CET the same day. Welcome! Fredrik Lindgren, Vice President, Corporate Communications +46 8 614 2031, Mobile: +46 73 524 2031 Oscar Stege Unger, Investor Relations Manager +46 8 614 2059, +46 70 624 2059 Our press releases can be accessed at www.investorab.com on the Internet. Investor is the largest industrial holding company in the Nordic region. For almost a century, our business concept has been to build best-in-class companies in sectors where we have a strong knowledge and networking advantage. ------------------------------------------------------------ This information was brought to you by Waymaker http://www.waymaker.net The following files are available for download: http://www.waymaker.net/bitonline/2004/10/05/20041005BIT21380/wkr0001.pdf Invitation to Media and Capital Market, Investor's Net Asset Value Report for Jan.-Sept. 2004

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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.

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