Ahlstrom to publish January-June 2012 interim report on August 9, 2012

Ahlstrom Corporation STOCK EXCHANGE RELEASE July 30, 2012 at 13.15 Ahlstrom will publish its January-June 2012 interim report on Thursday, August 9, 2012 approximately at 9.00 a.m. Finnish time (CET +1). Ahlstrom's President & CEO Jan Lång and CFO Seppo Parvi will present the report in Finnish at an analyst and press conference in Helsinki on Thursday, August 9 at 10.00 a.m. Finnish time. The conference will take place at event arena Bank, Unioninkatu 20. The name of the meeting room will be displayed on the board in the lobby. In addition, CEO Lång and CFO Parvi will hold a conference call in English on the same day at 2.00 p.m. Finnish time. To participate in the teleconference, please dial +358 (0)9 6937 9590 in Finland or +44 (0)20 3364 5381 outside Finland a few minutes before the conference begins. The confirmation code is 5451119. The event can also be viewed as a live audio webcast at www.ahlstrom.com. Registration is required. It is possible to participate in the Q & A session via online. An on-demand audio webcast of the conference will be available on Ahlstrom's website for twelve months after the call. The presentation material will be available at www.ahlstrom.com > Investors > Reports and presentations > 2012 after the January-June 2012 interim report has been published. For more information, please contact: Juho Erkheikki Manager, Financial Communications & Investor Relations Tel. +358 10 888 4731 Liisa Nyyssönen Vice President, Communications Tel. +358 10 888 4757 Ahlstrom in brief Ahlstrom is a high performance materials company, partnering with leading businesses around the world to help them stay ahead. Our products are used in a large variety of everyday applications, such as filters, medical gowns and drapes, wallcoverings, flooring, labels and food packaging. We have a leading market position in the businesses in which we operate. Our 5,200 employees serve customers in 28 countries on six continents. In 2011, Ahlstrom's net sales amounted to EUR 1.6 billion. The company's share is quoted on the NASDAQ OMX Helsinki. More information is available at www.ahlstrom.com. This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: Ahlstrom Oyj via Thomson Reuters ONE [HUG#1630396]