Based on the changes in the group according to article 15 para. 5 of the Ordinance of the Swiss Federal Banking commission on Stock Exchanges and Securities Trading UBS AG, Bahnhofstrasse 45, 8098 Zurich, received the following information from Credit Suisse Group, Paradeplatz 8, 8070 Zurich for publication.

As of 25 January 2008 Credit Suisse Group held acquisition positions amounting to 3.235% of the voting rights of UBS registered shares. These comprised 19,269,232 (0.930%) UBS registered shares with voting rights and 25,137,001 (1.213%) acquisition rights and 22,639,259 (1.092%) written disposal rights on UBS registered shares with voting rights.

At the same time Credit Suisse Group held disposal positions amounting to 3.625% (75,120,847) of the voting rights of UBS registered shares. These comprised 27,443,367 (1.324%) disposal rights and a further 47,677,480 (2.301%) written acquisition rights of UBS registered shares with voting rights.

Credit Suisse Group directly and indirectly holds the following acquisition and disposal positions through the following companies:

Credit Suisse Group, Paradeplatz 8, Postfach, 8070 Zürich, Switzerland indirectly through its subsidiaries Clariden Leu Holding AG, Bahnhofstrasse 32, 8001 Zurich, Switzerland (indirectly through Clariden Leu AG, Bahnhofstrasse 32, 8001 Zurich, Switzerland) and Credit Suisse, Paradeplatz 8, Postfach, 8070 Zurich, Switzerland, directly and indirectly through its subsidiaries Credit Suisse Holdings (USA) Inc, Eleven Madison Avenue, New York, N.Y. 10010, New York, USA (indirectly through Credit Suisse (USA) Inc, Eleven Madison Avenue, New York, NY 10010, New York, USA, indirectly through Credit Suisse Securities (USA) LLC, Eleven Madison Avenue, New York, NY 10010, New York, USA) and Credit Suisse International, One Cabot Square, Canary Wharf, London, E14 4QJ, England, and Credit Suisse Life (Bermuda) Ltd., Argyle House, 41 A, Cedar Avenue, Hamilton HM 12, Bermuda, and Credit Suisse Life & Pensions AG, Mühleholz 3, FL-9490 Vaduz, and Credit Suisse (International) Holding AG, Bahnhofstrasse 17, 6300 Zug, Switzerland (indirectly through Credit Suisse Investments (UK), One Cabot Square, London E14 4QJ, England, indirectly through Credit Suisse Investment Holdings (UK), One Cabot Square, London E14 4QJ, England, indirectly through Credit Suisse Securities (Europe) Limited, One Cabot Square, London E14 4QJ, England).

This disclosure is being made pursuant to the simplification of the reporting requirements through the Disclosure Office of the SWX. Details about the required disclosure of the acquisitions and the disposal positions will be provided on demand and free of charge by UBS (contact: UBS Investor Relations, +41-44-234 41 00) within two trading days via e-mail, fax or mail.