The Arbitral Tribunal Has Confirmed Spa Holdings 3 Oy’s Redemption Right over the Minority Shares in Ahlstrom-Munksjö and Trading in the Ahlstrom-Munksjö Shares Has Been Suspended

AHLSTROM-MUNKSJÖ OYJ                      STOCK EXCHANGE RELEASE
June 21, 2021 at 13:03 p.m. EEST

The arbitral tribunal appointed by the Redemption Board of the Finland Chamber
of Commerce in connection with the redemption proceedings concerning the
minority shares in Ahlstrom-Munksjö Oyj (“Ahlstrom-Munksjö”) has in its interim
decision today confirmed that Spa Holdings 3 Oy (“Spa Holdings 3”) has the right
to redeem the minority shares in Ahlstrom-Munksjö and that Spa Holdings 3 has
the right to obtain title to the minority shares by posting a security approved
by the arbitral tribunal for the payment of the redemption price and the
possible interest accruing thereon.

Ahlstrom-Munksjö announced on March 26, 2021 that the Board of Directors of
Ahlstrom-Munksjö has resolved to apply for the termination of public trading in
the shares of Ahlstrom-Munksjö and for the delisting of its shares from the
official list of Nasdaq Helsinki Ltd so that the delisting would occur as soon
as possible upon Spa Holdings 3 having gained title to all the shares in
Ahlstrom-Munksjö in the pending redemption proceedings under Chapter 18 of the
Finnish Companies Act. Following the confirmation of the redemption right,
Nasdaq Helsinki Ltd has suspended trading in the Ahlstrom-Munksjö shares on June
21, 2021 at 12:19 (EEST). The posting of the security and the delisting of the
Ahlstrom-Munksjö shares will be announced separately. The Ahlstrom-Munksjö
shares were delisted from the main market of Nasdaq Stockholm AB with the last
day of trading May 31, 2021, as announced earlier on April 16, 2021.

Further information:

Johan Lindh, Vice President, Communications and Investor Relations, +358 10 888
4994, johan.lindh@ahlstrom-munksjo.com

Juho Erkheikki, Investor Relations Manager, +358 10 888 4731,
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 its customers. Our mission is to expand
the role of fiber-based solutions for sustainable everyday life. Our offering
includes filter materials, release liners, food and beverage processing
materials, decor papers, abrasive and tape backings, electrotechnical paper,
glass fiber materials, medical fiber materials, diagnostics and energy storage
solutions, as well as a range of specialty papers for industrial and consumer
end-uses. Our annual net sales is about EUR 2.7 billion and we employ some 7,800
people. Read more at www.ahlstrom-munksjo.com