Ahlstrom Corporation STOCK EXCHANGE RELEASE 24.8.2009 at 13.15 Ahlstrom Corporation will publish its financial information in 2010 as follows: Report Publication date Silent period Financial statements Wednesday, February 3 January 1 - bulletin 2009 February 3 Interim report January - Thursday, April 29 April 1 - April 29 March Interim report January - Wednesday, August 11 July 1 - August 11 June Interim report January - Tuesday, October 26 October 1 - October September 26 During the silent period Ahlstrom is not in contact with capital market representatives. The annual report for 2009 will be published on week 11. Ahlstrom's Annual General Meeting will be held on Wednesday, March 31, 2010 at 1 p.m. at the Finlandia Hall (address: Mannerheimintie 13 e, Helsinki). 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 nonwovens and specialty papers. Ahlstrom's products are used in a large variety of everyday applications, 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 6,000 employees serve customers via sales offices and production facilities in more than 20 countries on six continents. In 2008, Ahlstrom's net sales amounted to EUR 1.8 billion. Ahlstrom's share is quoted on the NASDAQ OMX Helsinki. The company website is at www.ahlstrom.com.