Vaisala Oyj — Board/Management Information 2009

Dec 10, 2009

Disclosure 274498

Vaisala - Company Announcement

Changes in Vaisala's management

Vaisala Oyj Stock exchange release 10.12.2009 at 10.55 Ari Meskanen, Chief Technology Officer of Vaisala has been appointed Senior Vice President, Group Marketing and Sales starting January 1st 2010. Ari also continues in his current role of CTO until a successor has been appointed. Timo Raikaslehto, current Senior Vice President, Group Marketing and Sales of Vaisala resigns from the company in January 2010. He will join PriceWaterhouseCoopers Oy as Advisory Leader and a Partner. Further information: Kjell Forsén President and CEO Tel. +358 400 757 948 Helena Marjaranta SVP, Communications Tel. +358 40 581 9102 Distribution: NASDAQ OMX Helsinki Main media