Media Releases Financial Reports Presen-tations 08/10/2006       Publication regarding changes in voting rights according to Art. 21 SESTA Lonza Group Ltd, Muenchensteinerstrasse 38, 4002 Basel, announces that it has been informed by Marsico Capital Management, LLC, 1200 17th Street, Suite 1600, Denver, Colorado 80202, USA, on 4 August 2006 that it exceeded the threshold of 5% and that it now holds 5,14% of the voting rights in terms of 2,592,661 registered shares of a nominal value of CHF 1.-. For further information please contact: Corporate Communications / Investor Relation Margot Connor Tel +41 61 316 8566 Fax +41 61 316 9566 Mobile +41 79 401 2832 margot.connor@lonza.com