Investor AB

Board/Management Information • May 6, 2011

Press Release

Stockholm, May 6, 2011

Johan Bygge joins EQT Partners

Johan Bygge, currently CFO, will leave Investor AB and the management group to assume the position as Chief Operating Officer at the private equity group EQT Partners. Johan Bygge's last day at Investor will be May 17, 2011.

Lennart Johansson will be acting CFO until Susanne Ekblom, as previously communicated, joins Investor on August 15, 2011. Johan Bygge will be available to support Investor until Susanne Ekblom joins.

"Johan has done an excellent job at Investor. I look forward to continue working with Johan as he joins EQT Partners, with which we have a long standing relation as a sponsor", comments CEO Börje Ekholm.

"I have truly enjoyed working at Investor with among other things building the relevant structures and competences needed for handling large unlisted holdings and two major operating subsidiaries. I am excited about taking on the job at EQT Partners, an organization that I know well for its professionalism and strong track record", comments Johan Bygge.

For further information:

Oscar Stege Unger, Head of Corporate Communications, Phone +46 8 614 2059, +46 70 624 2059

Magnus Dalhammar, Investor Relations Manager, Phone +46 8 614 2130, +46 735 24 2130

Our press releases can be accessed at www.investorab.com

Investor AB 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 attractive long-term 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.