Vaisala Oyj

Report Publication Announcement • Jul 26, 2012

Disclosure 301054

Vaisala - Company Announcement

Vaisala's January - June Results Published on August 2, 2012

Vaisala Corporation Stock Exchange Release 26.7.2012 at 2:00 p.m. Vaisala publishes its January-June (Q2) 2012 results on Thursday, August 2, 2012 at 9:00 a.m. The stock exchange release will be available on the company website at www.vaisala.com. CEO's presentation will be published at 12:00 noon (GMT +3) on the same day at www.vaisala.com/investors. Briefing Briefing for analysts and media will be arranged in Hotel Kämp, Paavo Nurmi meeting room, Pohjoisesplanadi 29, Helsinki, starting at 12:00 noon. Please register to the briefing by email to kirsten.fay@vaisala.com. Audiocast The presentation of Kjell Forsén, President and CEO, at the briefing will be audiocasted live starting at 12:00 noon (GMT +3) at www.vaisala.com/investors. It will also be published as a recording at the same address at 2:00 p.m. (GMT +3) on the same day. More information: Sanna Nyström, Communications Tel. +358 40 584 1126 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 [HUG#1629467]