Ahlstrom-Munksjö Oyj: Change in the holding of AC Invest Five BV

AHLSTROM-MUNKSJÖ OYJ, STOCK EXCHANGE RELEASE July 27, 2017 at 10:30 CEST Ahlstrom-Munksjö Oyj has today received a notification in accordance with Chapter 9, Section 5 of the Finnish Securities Markets Act from Ahlström Capital Oy on behalf of AC Invest Five BV. According to the notification, the shareholding of AC Invest Five BV, a fully owned indirect subsidiary of Ahlström Capital Oy, in Ahlstrom-Munksjö Oyj has exceeded the threshold of 10% on July 26, 2017 (from 9.70% to 11.45%). No notification threshold has been crossed on the group level. Ahlström Capital’s total shareholding has increased from 15.39% to 17.14% (through AC Invest Five BV and AC Invest Six BV). Ahlstrom-Munksjö’s registered total number of shares and voting rights of 96,438,573 shares and voting rights has been used as the basis of calculation of percentages for the notification. AC Invest Five BV is a 100% owned subsidiary of Ahlstrom Capital BV and Ahlstrom Capital BV is a 100% owned subsidiary of Ahlström Capital Oy. AC Invest Six BV is a 100% owned subsidiary of Ahlstrom Capital BV and Ahlstrom Capital BV is a 100% owned subsidiary of Ahlström Capital Oy. For further information, please contact:

Juho Erkheikki, Investor and Media Relations Manager, tel. +358 50 413 45 83, juho.erkheikki@ahlstrom-munksjo.com

Ahlstrom-Munksjö in brief 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 2.15 billion and we employ 6,000 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.