Ahlstrom Corporation STOCK EXCHANGE RELEASE 20.10.2009 Ahlstrom Corporation will publish its third quarter financial results for 2009 on Tuesday, October 27, 2009 approximately at 12 a.m. Finnish time. Ahlstrom's President & CEO Jan Lång will present the third quarter results in Finnish at a press conference in Helsinki on October 27, 2009, at 2:00 p.m. Finnish time. The conference will take place at Event Arena Bank, address Unioninkatu 20, 2nd floor. The name of the meeting room will be displayed on the display board in the lobby. You are welcome to attend. In addition, an international conference call for analysts and investors will be held on October 27, 2009, at 4:00 p.m. Finnish time. The discussion will be led by President & CEO Jan Lång. To participate in the teleconference, please dial +358 9 2313 9201 in Helsinki or +44 20 7162 0077 in London a few minutes before the conference begins. When connecting to the conference call, please use the conference id 848199. A replay number is available until November 3, 2009. The numbers for the replay are +358 9 2314 4681 (instructions in Finnish) and +44 20 7031 4064 (instructions in English). The access code is the same as the conference call id (848199). The presentation material will be available at www.ahlstrom.com > Investors > IR presentations on October 27, 2009, after the interim report has been published. Ahlstrom Corporation Niina Suhonen Vice President, Corporate Communications For further information, please contact: Heli-Kirsti Airisniemi Financial Communications Manager, tel. +358 10 888 4731 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.