Media Releases Financial Reports Presen-tations 09/05/2008     Publication regarding changes in voting rights according to Art. 21 SESTA Lonza Group Ltd, Muenchensteinerstrasse 38, 4002 Basel, announces that on 3 September 2008 it has been informed by Merrill Lynch & Co., Inc., 4 World Financial Center, New York, NY 10080, USA (as parent company of BlackRock Investment Management (UK) Limited, 33 King William Street, London EC4R 9AS, UK; Merrill Lynch Capital Markets AG, Stockerhof, Stockerstrasse 23, P.O. Box 773, 8039 Zürich, CH; Merrill Lynch, Pierce, Fenner & Smith, 4 World Financial Center, 250 Vesey Street, New York, NY 10080, USA and Merrill Lynch International, 2 King Edward Street, London EC1A 1HQ, UK), that its holding in Lonza Group Ltd as of 28 August 2008 amounts to 3,031% in total, namely: 576,193 registered shares with a nominal value of CHF 1.- (1,142%); 411 (0.081%) Flex Option (Call Right) Issuer: OTC, Maturity: 19.09.2008, Ratio: 1:100, Strike Price: 150, Exercise Style: European; 1,000 (0.198%) Long Call, Issuer: EUREX, Maturity: 19.12.2008, Ratio: 1:100, Strike Price: 160, Exercise Style: American; 3,000 (0.595%) Long Call, Issuer: EUREX, Maturity: 19.12.2008, Ratio: 1:100, Strike Price: 150, Exercise Style: American; 5,000 (0.991%) Short Put, Issuer: EUREX, Maturity: 19.12.2008, Ratio: 1:100, Strike Price: 150, Exercise Style: American; 150,000 (0.010%) Warrant, LONVU, ISIN: CH0037068340; 200’000 (0.013%) Warrant, LONYN, ISIN: CH0037068332. The voting rights from holding put options amount to 0,231%, namely 280 (0.056%) Long Put, Issuer: EUREX, Maturity: 19.09.2008, Ratio: 1:100, Strike Price: 150, Exercise Style: American; 2,433,902 (0.161%) Warrant, LONXY, ISIN: CH0028966148; 117,900 (0.008%) Warrant, LONOE, ISIN: CH0037068324; 110,000 (0.007%) Warrant, LONPR, ISIN: CH0037068308. Contact person: Simone Schenk, Merrill Lynch Capital Markets AG, Stockerstrasse 23, 8002 Zürich. Tel.: +41 44 297 75 90 / Fax: +41 44 291 61 51.