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STOCK EXCHANGE RELEASE 4 Oct 2006

NOTICE PURSUANT TO FINNISH SECURITIES MARKETS ACT 2:10; GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC'S SHAREHOLDINGS IN PÖYRY PLC

PÖYRY PLC                  Stock Exchange Announcement
                           October 4, 2006 at 4.10 p.m.

NOTICE PURSUANT TO FINNISH SECURITIES MARKETS ACT 2:10; GRANTHAM, MAYO,
VAN OTTERLOO & CO. LLC'S SHAREHOLDINGS IN PÖYRY PLC

Pöyry Plc has been informed on October 3, 2006 that as a result of
transactions concluded on September 26, 2006 the total holdings of funds
under the management of Grantham, Mayo, Van Otterloo & Co. LLC have
decreased to below 1/20 of the share capital in Pöyry Plc.

The holding of funds under the management of Grantham, Mayo, Van
Otterloo & Co. LLC, 40 Rowes Wharf, Boston, MA 02210, USA, amount to
2 640 896 shares, i.e. 4.54 per cent of voting rights in Pöyry Plc.

The registered share capital of Pöyry Plc comprises a total of
58 180 144 shares entitling to a total of 58 180 144 votes.

PÖYRY PLC


Erkki Pehu-Lehtonen                 Teuvo Salminen
President and CEO                   Deputy to President and CEO

Additional information by:
Satu Perälampi, Investor Relations Manager, Pöyry Plc
Tel. +358 10 33 23002

www.poyry.com

DISTRIBUTION:
Helsinki Stock Exchange
Major media