Conversion of unlisted shares series K into series A

| Source: Vaisala Vaisala 


Vaisala Oyj Stock Exchange Announcement 20.09.2007 at 14:15 1(1)

Vaisala Oyj's 400 unlisted shares (series K) have been converted into
listed shares (series A). The conversion has been registered in the
Finnish Trade Register September 20, 2007. Listing of the new series
A shares has been applied for as of September 21, 2007.


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

Vaisala Oyj



Distribution:
Nordic Exchanges