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STOCK EXCHANGE RELEASE 5 Dec 2003

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

JAAKKO PÖYRY GROUP OYJ     Stock Exchange Notice
                           December 5, 2003 at 9.00 a.m

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

Jaakko Pöyry Group Oyj has been informed on December 4, 2003 that as a
result of transactions concluded on December 1, 2003 the total holdings
of funds under the management of Grantham, Mayo, Van Otterloo & Co. LLC
have increased to above 1/20 of the share capital in Jaakko Pöyry Group
Oyj.

The holding of funds under the management of Grantham, Mayo, Van
Otterloo & Co. LLC, 40 Rowes Wharf, Boston, MA 02210, USA, amount to
697 474 shares, i.e. 5.01 per cent of voting rights in Jaakko Pöyry
Group Oyj as of December 5, 2003.

The registered share capital of Jaakko Pöyry Group Oyj comprises a total
of 13 930 551 shares entitling to a total of 13 930 551 votes.

JAAKKO PÖYRY GROUP OYJ


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


Additional information by:
Satu Perälampi, Investor Relations Manager, Jaakko Pöyry Group Oyj
Tel. +358 9 8947 3002, +358 40 526 3388

www.poyry.com


DISTRIBUTION:
Helsinki Exchanges
Major media