Metso Corporation's company release on March 31, 2009 at 12.15 p.m. Metso Corporation has been informed about a change in the holding of the mutual funds managed by UBS AG of the paid up share capital of Metso Corporation. On March 27, 2009 UBS AG's (CH-270.3.004.646-4/) group holding in shares of Metso Corporation fell below the 5% threshold. The holding amounted to 561 306 shares, which corresponds to 0.40 percent of the paid up share capital and votes in Metso Corporation, after being, on the basis of their previous announcement, 5.32 percent on March 24, 2009. According to UBS AG's announcement, this position is held at the following UBS entities: UBS AG, UBS Fund Management (Switzerland) AG, UBS Fund Services (Luxembourg) S.A., UBS Global Asset Management (UK) Ltd., UBS Global Asset Management Life Ltd. (UK), UBS Global Asset Management (France) SA, UBS Global Asset Management (Deutschland) GmbH, UBS Financial Services Inc., UBS Global Asset Management (Americas) Inc. and UBS Securities LLC. Metso is a global supplier of sustainable technology and services for mining, construction, power generation, automation, recycling and the pulp and paper industries. We have over 29,000 employees in more than 50 countries. www.metso.com For further information, please contact: Johanna Sintonen, Vice President, Investor Relations, Metso Corporation, tel. +358 20 484 3253. Metso Corporation Olli Vaartimo Executive Vice President and CFO Kati Renvall Vice President, Corporate Communications Distribution: NASDAQ OMX Helsinki Ltd Media www.metso.com