Disclosure Notice

Stockholm, September 14, 2005

As indicated in a press release from Biotage on September 8, 2005, Investor AB and the two other largest shareholders in the company have temporarily lent shares in connection with Biotage’s announced, but not yet implemented, new share issue. As an effect of this, Investor’s holding in Biotage has been reduced by 2,100,000 shares and changed from 11.3 percent of the votes and capital to 8.8 percent. INVESTOR AB For further information: Oscar Stege Unger, Investor Relations Manager, +46 8 614 20 59, +46 70 624 2059