Ahlstrom-Munksjö Oyj: Change in the holding of Ilmarinen Mutual Pension Insurance Company

AHLSTROM-MUNKSJÖ OYJ, STOCK EXCHANGE RELEASE April 3, 2017 at 16:15 CEST Helsinki, Finland  Ahlstrom-Munksjö Oyj: Change in the holding of Ilmarinen Mutual Pension Insurance Company Ahlstrom-Munksjö Oyj (“Ahlstrom-Munksjö”) has today received a notification in accordance with Chapter 9, Section 5 of the Finnish Securities Markets Act from Ilmarinen Mutual Pension Insurance Company. The announcement includes the following information: The holding of Ilmarinen in Ahlstrom-Munksjö has fallen below the 5% threshold as a consequence of the merger of Ahlstrom Corporation into Munksjö Oyj. On April 1, 2017, the direct holding of Ilmarinen amounted to 4,474,546 shares, corresponding to a holding of 4.64% of Ahlstrom-Munksjö's shares and voting rights. Ahlstrom-Munksjö’s registered total number of shares and voting rights of 96,438,573 shares and voting rights have been used as the basis of calculation of percentages for the notification. Ahlstrom-Munksjö Oyj For more information, please contact: Juho Erkheikki, Investor & Media Relations Manager, juho.erkheikki@ahlstrom-munksjo.com, tel. +358 10 888 4731

Ahlstrom-Munksjö is a global leader in fiber-based materials, supplying innovative and sustainable solutions to customers worldwide. Our offerings include decor paper, filter media, release liners, abrasive backings, nonwovens, electrotechnical paper, glass fiber materials, food packaging and labeling, tape, medical fiber materials and solutions for diagnostics. Combined annual net sales are about EUR 2.2 billion and we employ 6,200 people. The Ahlstrom-Munksjö share is listed on the Nasdaq Helsinki and Stockholm. The company was formed on April 1, 2017 through the merger of Ahlstrom Corporation and Munksjö Oyj. Read more at www.ahlstrom-munksjo.com.