Ahlstrom-Munksjö Oyj - Major shareholder announcements

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.