Based on the revised regulations of the federal law on stock markets and stock trading (BEHG) effective 1 December 2007 UBS AG, Bahnhofstrasse 45, 8098 Zurich, received the following information from Credit Suisse Group, Paradeplatz 8, 8070 Zurich for publication.

As of 1 December 2007 Credit Suisse Group held a stake of 3.08% of acquisition positions (proportion of voting rights) of UBS registered shares. These comprised 10,866,275 (0.52%) UBS registered shares with voting rights and 24,660,726 (1.19%) acquisition rights and 28,320,730 (1.37%) written disposal rights on UBS registered shares with voting rights.

At the same time there were 3.77% (78'082'316) disposal positions (proportion of voting rights) of UBS registered shares. These comprised 37'284'795 (1.80%) disposal rights and a further 40,797,521 (1.97%) 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 indirectly through its subsidiary Clariden Leu Holding AG, Bahnhofstrasse 32, 8001 Zurich, Switzerland (indirectly through Clariden Leu AG, Bahnhofstrasse 32, 8001 Zurich, Switzerland) and Credit Suisse, Paradeplatz 6, Postfach, 8070 Zurich, Switzerland, directly and indirectly through its subsidiary Credit Suisse Holdings (USA) Inc. Eleven Madison Avenue, New York, N.Y. 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 Suiss Life (Bermuda) Ltd., Argyle House, 41 A, Cedar Avenue, Hamilton HM 12, Bermuda, and Credit Suisse Life & Pensions AG, Mühleholz 3, FL-9480 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), and CSPB Non-Traditional Investments Ltd., The Bahamas Financial Centre, 3rd Floor, P.O. Box N-3023, Shirley & Charlotte Streets, Nassau, Bahamas.

This disclosure is being made pursuant to the simplification of the reporting requirements through the Disclosure Office of the SWX. With advance notice, details about the acquisitions and the disposal positions can be viewed without cost during normal branch opening hours at the head office of UBS, Bahnhofstrasse 45, 8098 Zurich (UBS Investor Relations, +41 44 234 41 00).