Vaisala Oyj — Share Issue/Capital Change 2009

Mar 5, 2009

Disclosure 267902

Vaisala - Company Announcement

Conversion of unlisted shares series K into series A

Vaisala Oyj Stock Exchange Release 05.03.2009 at 12.00 Conversion of unlisted shares series K into series A Vaisala Oyj's 500 unlisted shares (series K) have been converted into listed shares (series A). The conversion has been registered in the Finnish Trade Register March 05, 2009. Listing of the new series A shares has been applied for as of March 06, 2009. Further information: Jouni Lintunen, CFO, tel. +358 9 8949 2215 or +358 40 5790181 Vaisala Oyj Distribution: Helsinki Exchanges