Utilization of authorization within Investor AB to repurchase own shares to hedge the company's long-term share-based remuneration program for employees and synthetic shares as part of board remuneration

Utilization of authorization within Investor AB to repurchase own shares to
hedge the company's long-term share-based remuneration program for employees and
synthetic shares as part of board remuneration

The 2009 Annual General Meeting of Investor AB approved the proposal to
authorize the company's Board of Directors to decide on the purchase of the
company's own shares for the purpose of hedging Investor's commitments and costs
in connection with its 2009 long-term share-based remuneration program for
employees and the issue of synthetic shares as part of board remuneration.
Investor hereby announces that the company's board has decided to utilize the
authorization for these purposes.

The shares will be purchased on the Stockholm Stock Exchange (Stockholmsbörsen)
before June 10, 2009 at a price within the registered share price interval on
each occasion.

Investor currently owns 2,483,800 of its own B-shares and intends to buy back an
additional maximum amount of 2,500,000 B-shares.

For further information:

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

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


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

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.