New date for Investor AB's Year-End Report for 2003

Financial reporting dates in 2004

New date for Investor AB's Year-End Report for 2003

Please note that Investor AB's Year-End Report for 2003 will be released
on January 20, 2004 instead of the previously reported date of January
22.

Financial Reports in 2004
Due to accounting regulations, Investor's associated companies are to be
reported in accordance with the equity method in the consolidated income
statement and balance sheet as of 2004. As a consequence, Investor must
wait for the interim reports of associated companies before it can
prepare its own formal interim report. However, for the purpose of
providing financial information to the market as quickly as possible,
Investor will first prepare a net asset value report based on the
acquisition value method and then release its formal interim report at a
later date. Press and analyst meetings will be held in conjunction with
net asset value reports but not in conjunction with the release of the
formal interim reports.

                       Net Asset Value Reports   Formal Interim Reports
                                                 
 January - March 2004  April 19                  May 28
 January - June 2004   July 12                   August 27
 January - September   October 12                November 26
 2004

INVESTOR AB

For further information:
Fredrik Lindgren, Vice President, Corporate Communications,
+46 8 614 2031, +46 70 624 2031