Announcement pursuant to the Securities Market Act

 Metso Corporation's stock exchange release on July 29, 2013 at 9:40 a.m. local time Metso Corporation has on July 26, 2013, pursuant to Chapter 9, Section 5 of the Finnish Securities Markets Act, received a disclosure notification from Cevian Capital II Master Fund L.P. (Reg. # OG-17445) and Cevian Capital Partners Ltd (Reg. # C 45913). Cevian Capital Partners Ltd. is a wholly-owned subsidiary of Cevian Capital II Master Fund L.P. On July 26, 2013 Cevian Capital II Master Fund L.P. and Cevian Capital Partners Ltd.   holdings in shares of Metso Corporation exceeded the 10 percent threshold. The holding amounted to 15,540,039 shares, which corresponds to 10.34 percent of the total amount of shares and votes in Metso Corporation. Metso is a global supplier of technology and services to customers in the process industries, including mining, construction, pulp and paper, power, and oil and gas. Our 30,000 professionals based in over 50 countries deliver sustainability and profitability to customers worldwide. Metso's shares are listed on the NASDAQ OMX Helsinki Ltd. www.metso.com , www.twitter.com/metsogroup Further information, please contact: Juha Rouhiainen, VP,Investor Relations,  Metso Corporation, tel +358 20 484 3253 Metso Corporation Harri Nikunen CFO Juha Rouhiainen VP, Investor Relations Distribution: NASDAQ OMX Helsinki Ltd Media www.metso.com [HUG#1719330]