Vaisala - Total number of voting rights and capital

Conversion of unlisted shares series K into series A

Vaisala Oyj  Stock Exchange Announcement  29.06.2010  at 12.00   1(1)

Vaisala Oyj's 3000 unlisted shares (series K) have been converted into listed
shares (series A). The conversion has been registered in the Finnish Trade
Register June 29, 2010. Listing of the new series A shares has been applied for
as of June 30, 2010.

Further information:
Jouni Lintunen, CFO
Tel. +358 9 8949 2215 or +358 40 5790181

Vaisala Oyj

Distribution:
Helsinki Exchanges



[HUG#1427994]