EXCHANGE NOTICE 475 /2004, 30 November 2004 OPTION RIGHTS
A total of 468 000 Vaisala Corporation's 2000 B option rights, attached to the Vaisala Corporation's warrant
program 2000, will be traded on the Helsinki Stock Exchange together with the listed 2000 A option rights as
of 1 December 2004.
Identifiers of Vaisala Corporation's 2000 A/B option right:
Trading code: VAIASEW100
ISIN code: FI0009609176
Orderbook id: 26087
Number of warrants valid in trading: 896 000
HELSINKI STOCK EXCHANGE
Janne Seppänen
Vice President Surveillance Finland