Investor AB

Pre-Annual General Meeting Information • Mar 24, 2009

Press Release

Stockholm, March 24, 2009

Invitation to Investor's Annual General Meeting

Media and Analysts

Investor AB's Annual General Meeting will be held Tuesday, March 31, 2009, at 1:00 pm at the City Conference Centre, Barnhusgatan 12-14, in Stockholm. Registration for the meeting will commence at 11:30 a.m.

Representatives of the news media and analysts are welcome to attend the meeting. There will be opportunities for interviews immediately after the meeting ends. Please sign up for interviews at the press counter when you arrive.

If you would like 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.

For further information please contact:

Fredrik Lindgren, Vice President, Corporate Communications Phone +46 8 614 20 31, +46 735 24 2031

Oscar Stege Unger, Vice President, Investor Relations, Phone +46 8 614 20 59, +46 70 624 2059

Our press releases can be accessed at www.investorab.com on the Internet.

Investor is a Nordic-based industrial holding company founded almost one hundred years ago by the Wallenberg family. Today we have investment activities in Europe, the United States and Asia. The business concept is to generate long-term attractive returns for our shareholders by owning and developing companies with solid potential for value creation. We are an engaged owner and apply experience, knowledge and a unique network to develop listed and unlisted companies to make them best-in-class.