Vaisala Oyj

Report Publication Announcement • Jan 30, 2013

Disclosure 304284

Vaisala - Company Announcement

Vaisala's January-December 2012 Results Published on February 6, 2013

Vaisala Corporation Stock Exchange Release January 30, 2013 at 1:30 p.m. Vaisala publishes its January-December 2012 results on Wednesday, February 6, 2013 at 2 p.m. (EET). The stock exchange release will be available on Vaisala's website at www.vaisala.com after publishing. The CEO's presentation will be published at www.vaisala.com/investors at 4 p.m. (EET) on the same day. Briefing Briefing for analysts and media will be arranged in Hotel Kämp, Paavo Nurmi meeting room, Pohjoisesplanadi 29, Helsinki, on Wednesday, February 6, 2013 starting at 4 p.m. (EET). Please register to the briefing by e-mail to liisa.ahtiluoto@vaisala.com. The presentation of Kjell Forsén, President and CEO, at the briefing will be webcast live at www.vaisala.com/investors. It will also be published as a recording at the same address by 6 p.m. on the same day. More information: Liisa Ahtiluoto, Communications Director Tel. +358 40 730 7695 Vaisala is a global leader in environmental and industrial measurement. Building on 75 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 chosen weather-related and industrial markets. Headquartered in Finland, Vaisala employs approximately 1400 professionals worldwide and is listed on the NASDAQ OMX Helsinki stock exchange. www.vaisala.com www.twitter.com/VaisalaGroup Distribution: OMX Nordic Exchange Helsinki Main media www.vaisala.com [HUG#1674126]