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