Invitation to Investor’s Annual General Meeting

Media and Analysts Investor AB’s Annual General Meeting will be held Monday, April 11, 2005, at 3:00 p.m. at Cirkus, Djurgårdsslätten 43-45, in Stockholm. Registration for the meeting will commence at 1.30 p.m. Representatives of the news media and analysts are welcome to attend the meeting. There will be opportunities to ask questions immediately afterwards. If you plan to attend Investor AB’s Annual General Meeting, please call Helen Jönsson at +46 8 614 2046 or e-mail to the following address: helen.jonsson@investorab.com. Investor AB’s Interim Report for January-March, 2005, will be published the same day around 8.30 a.m. CET. For further information please contact: Fredrik Lindgren, Vice President, Corporate Communications, +46 8 614 2031, +46 735 24 2031 Oscar Stege Unger, IR Manager, +46 8 614 2059, +46 70 624 2059