Ahlstrom Corporation STOCK EXCHANGE RELEASE 11.9.2008 Due to continued weakness in the demand in certain of its products, Ahlstrom revises its full-year outlook for 2008. Operating profit excluding non-recurring items is expected to be almost at the level of 2007, which was EUR 67.8 million. Softness of demand is visible especially in the USA in products related with changes in consumer spending patterns, such as wiping fabrics, filtration and nonwovens for cars, housing filtration materials, as well as glassfiber reinforcement applications for the marine industry. Ahlstrom previously estimated its full-year operating profit to improve from last year. Ahlstrom will publish its January-September interim report on October 28, 2008. Further information: Ahlstrom Corporation Risto Anttonen, CEO Tel. +358 10 888 4166 Jari Mäntylä, CFO Tel. +358 10 888 4768 Distribution: OMX Nordic Exchange 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 OMX Nordic Exchange Helsinki. The company website is www.ahlstrom.com.