Ahlstrom Corporation STOCK EXCHANGE RELEASE 4.5.2009 As announced earlier, Seppo Parvi, born 1964, M. Sc. (Econ.), will join Ahlstrom to take on the position of Chief Financial Officer and a member of the Corporate Executive Team. He will start at Ahlstrom on May 25, 2009 and will be based at Ahlstrom Corporation's Head Office in Helsinki. Jan Lång President & CEO Ahlstrom Corporation 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 6,100 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.