Vaisala Oyj

Regulatory Filings • Feb 27, 2009

Disclosure 267617

Vaisala - Company Announcement

Vaisala signs a significant upper-air sounding equipment contract

Vaisala Oyj Stock exchange release 27.2.2009 at 10.00 am Vaisala has signed a contract with a long standing customer for upper-air sounding equipment. The contract is valued at 8.6 million USD and the deliveries are expected to take place by the end of the first quarter in 2010. Vaisala's upper-air sounding equipment is used all over the world to measure weather in the Earth's atmosphere, from the boundary layer to the upper atmosphere. Vaisala is a global leader in environmental and industrial measurement. Building on more than 70 years of experience, Vaisala contributes to a better quality of life by providing a comprehensive range of innovative observation and measurement products and services for meteorology, weather critical operations and controlled environments. Headquartered in Finland, Vaisala employs over 1200 professionals worldwide and is listed on the NASDAQ OMX Helsinki. www.vaisala.com More information Antti Ritvos, Vice Executive President, Weather Critical Operations, tel. +358 40 5047 555