Vaisala Oyj

Business and Financial Review • Apr 29, 2009

Disclosure 269892

Vaisala - Company Announcement

Vaisala renewed its segment reporting

Vaisala published its new strategy in November 2008. Going forward, the company will focus on markets with the biggest growth potential in the environmental measurement business. The company will seek growth from the current and new market segments. Vaisala also announced that it adopts a market segment based reporting model. From the first interim report in 2009, Vaisala Group's business will be reported in three segments, which are Meteorology, Weather Critical Operations and Controlled Environment. Meteorology consists of Emerging markets and Established markets. The Meteorology business area serves national meteorological and hydrological institutes, whose primary interest is to provide national weather information and forecasts. Weather Critical Operations consists of Airports, Roads, Defense, Wind Energy and Targeted Business Development segments. This business area focuses on customers whose operations or businesses are affected by the weather, like aviation customers, road authorities, defense forces and wind parks. Controlled Environment consists of Cleanrooms and Chambers, Building Automation and Targeted Industrial Applications segments. This business area includes customers who operate in tightly controlled and demanding areas where the measurement of precise environmental conditions is required to increase operational quality, productivity and energy savings. The geographical segments of the Vaisala Group are Americas, Europe, Middle East and Africa (EMEA) and Asia Pacific (APAC). Vaisala's January - March interim report will be published on May 8, 2009. 2008 net sales and operating profit based on the new segments Net sales (MEUR) Q1 Q2 Q3 Q4 2008 Meteorology 12.6 16.5 14.5 21.2 64.9 Controlled Environment 13.7 14.0 13.2 13.4 54.3 Weather Critical Operations 20.1 29.6 30.6 43.0 123.3 Other 0.0 0.0 0.0 0.0 0.0 Total 46.4 60.1 58.4 77.6 242.5 Operating profit (MEUR) Q1 Q2 Q3 Q4 2008 Meteorology -0.2 3.3 1.9 3.0 8.0 Controlled Environment 2.7 2.8 1.9 1.0 8.4 Weather Critical Operations -0.2 6.3 7.3 11.2 24.6 Other 0.7 -0.6 -1.9 -1.2 -3.0 Total 3.1 11.7 9.2 14.0 38.0 Further information Jouni Lintunen, CFO, p.+358 9 8949 2215 or +358 40 579 0181