Vaisala Oyj

Declaration of Voting Results & Voting Rights Announcements • May 27, 2019

Disclosure 372360

Vaisala - Total number of voting rights and capital

Change in Vaisala Corporation’s number of series A and K shares and total number of votes

Vaisala Corporation

Stock Exchange Release

May 27, 2019 at 9:30 a.m. EEST

Change in Vaisala Corporation’s number of series A and K shares and total number of votes

Vaisala Corporation’s Board of Directors decided in its meeting on April 24, 2019, that 27,264 series K shares will be converted to series A shares. This conversion was registered into the Trade Register today, on May 27, 2019. Consequently, Vaisala has 36,436,728 shares, of which 6,751,398 are series K shares and 29,685,330 are series A shares. Total number of votes attached to all shares is 164,713,290, of which 135,027,960 are attached to series K shares and 29,685,330 to series A shares. Vaisala holds a total of 558,184 company’s series A shares, which represent 1.9% of series A shares and 1.5% of all shares.

**More information

**Kaarina Muurinen, CFO

Tel. +358 40 577 5066

Vaisala Corporation

**Distribution

**Nasdaq Helsinki

Key media

www.vaisala.com

Vaisala is a global leader in environmental and industrial measurement. Building on over 80 years of experience, Vaisala provides observations for a better world. We are a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services. Headquartered in Finland, Vaisala employs approximately 1,850 professionals worldwide and is listed on the Nasdaq Helsinki stock exchange. www.vaisala.com www.twitter.com/VaisalaGroup