A-WARRANTS OF VAISALA OYJ 2000 WARRANT PROGRAM LISTED ON DECEMBER 1,2003


SECURITIES TRADING   RELEASE 318/2003 OPTION RIGHTS        November 27,
 
A-WARRANTS OF VAISALA OYJ 2000 WARRANT PROGRAM LISTED ON DECEMBER 1,2003
 
Trading in the A-warrants of Vaisala Oyj 2000 warrant program will start on the Helsinki Exchanges on Monday, December 1, 2003.
 
Basic information on Vaisala 2000 A-warrants:
 
Trading code:                     VAIASEW100
ISIN-code:                        FI0009609176
Round lot:                        50
Listing date:                     December 1, 2003
Subscription ratio:               1 (VAIASEW100):
                                  1 (VAIAS)
Subscription price:               22,78 EUR / share
Subscription period started:      December 1, 2002
Subscription period will end:     January 31, 2006
Number of warrants:               428 000
 
HELSINKI EXCHANGES
Pekka Peiponen