Pursuant to article 20 BEHG BB BIOTECH AG, Vordergasse 3, 8200
Schaffhausen and its wholly-owned subsidiary Biotech Target N.V.,
Snipweg 26, CuraÃ§ao, Netherlands Antilles hereby report that they
increased their voting rights to more than 25% of the proportion of
voting rights of BB BIOTECH AG as at September 25, 2008.
Please find enclosed further details.