Vaisala Oyj

Report Publication Announcement • Jan 25, 2012

Summary of Stock Exchange Releases in 2011

Below is the summary of the stock exchange releases Vaisala Oyj published in 2011. The full text stock exchange releases, announcements and press releases are available on the Vaisala web site at www.vaisala.com/en/press/news/.

Dec 22, 2011	Conversion of unlisted shares series K into series A
Dec 13, 2011	Vaisala's Industrial Business Adjusts Its Strategy
Nov 16, 2011	The Schedule for Vaisala Oyj's Financial Information in 2012
Nov 10, 2011	Vaisala's Capital Markets Day on November 10, 2011
Nov 07, 2011	Vaisala Consolidates R&D Activities
Nov 07, 2011	Vaisala Signs Significant Radiosonde Contract
Nov 04, 2011	Vaisala Group financial statement bulletin for
	January-September 2011
Oct 27, 2011	Vaisala Signs 6.7 Million Euro Contract
Oct 25, 2011	Vaisala's January - September Results Published on November 4
Oct 03, 2011	Invitation to Vaisala's Capital Markets Day
Aug 31, 2011	Vaisala to Combine its Weather Businesses
Aug 04, 2011	Vaisala Group Financial Statement Bulletin Q2/2011
Jul 27, 2011	Vaisala's January - June results published on August 4
Jun 30, 2011	Appointment in Vaisala's Management Group
May 06, 2011	Vaisala Group Financial Statement Bulletin Q1/2011
Apr 29, 2011	Vaisala's January - March (Q1/2011) results published on May 6, 2011
Mar 25, 2011	Decisions made by Vaisala Oyj's Annual General Meeting
Mar 16, 2011	Correction: Appointments in Vaisala's Management
Mar 16, 2011	Appointments in Vaisala's Management
Mar 08, 2011	Vaisala's annual report and summary list of 2010 releases published
Feb 21, 2011	Invitation to Vaisala's Annual General Meeting
Feb 18, 2011	Timo Lappalainen Proposed as New Member for Vaisala's
	Board of Directors
Feb 18, 2011	Vaisala Group Financial Statement Bulletin 2010
Feb 09, 2011	Vaisala's 2010 January - December results published
	on February 18, 2011
Feb 01, 2011	Preliminary information on Vaisala's 2010 financial result