Ahlstrom Corporation STOCK EXCHANGE RELEASE 20.10.2008 Ahlstrom Corporation will publish its financial information in 2009 as follows: Financial statements bulletin 2008 Thursday, February 5 Annual report 2008 Week 12 Interim report January - March Wednesday, April 29 Interim report January - June Friday, July 24 Interim report January - September Wednesday, October 28 Ahlstrom's Annual General Meeting will be held on Wednesday, March 25, 2009 at 13.00 at the Finlandia Hall, Mannerheimintie 13 e, Helsinki. Ahlstrom will observe closed period prior to announcing its financial results. The closed period starts three weeks prior to the publication of the company's annual financial statements or the interim financial statements. During this period Ahlstrom is not in contact with capital market representatives. Ahlstrom Corporation Corporate Communications and Investor Relations Distribution: NASDAQ OMX Helsinki Main media www.ahlstrom.com Ahlstrom in brief Ahlstrom is a global leader in the development, manufacture and marketing of high performance fiber-based materials. Nonwovens and specialty papers, made by Ahlstrom, are used in a large variety of everyday products, such as filters, wipes, flooring, labels, and tapes. Based upon its unique fiber expertise and innovative approach, the company has a strong market position in several business areas in which it operates. Ahlstrom's 6,500 employees serve customers via sales offices and production facilities in more than 20 countries on six continents. In 2007, Ahlstrom's net sales amounted to EUR 1.8 billion. Ahlstrom's share is listed on the NASDAQ OMX Helsinki. The company website is www.ahlstrom.com.