Claes Dahlbäck to leave Investor AB's Board as of AGM 2005; Jacob Wallenberg proposed to succeed him as new Chairman

Claes Dahlbäck has informed Investor AB’s Nomination Committee that he requests to leave his position as Chairman of the Board of Directors effective the Annual General Meeting on April 11, 2005. Jacob Wallenberg, currently Vice Chairman of Investor, has been proposed to succeed Claes Dahlbäck as new Chairman. “It feels natural for me to pass the baton after a 27-year-long career with Investor as CEO, Vice Chairman and Chairman. Today, Investor is strongly positioned and heading towards an exciting future. I will keep a few of my other assignments and look forward to many more years of activity,” says Claes Dahlbäck. “Claes Dahlbäck’s contributions have been invaluable to Investor. During the many years he was CEO, Investor’s operations developed in a fantastic way and he continued to make other valuable contributions to the company in subsequent years, most recently in his position as Chairman,” says Peter Wallenberg, Chairman of the Knut and Alice Wallenberg Foundation. INVESTOR AB For further information contact: Fredrik Lindgren, Head of Corporate Communications, +46 8 614 2031, +46 735 24 20 31.