AHLSTROM-MUNKSJÖ OYJ STOCK EXCHANGE RELEASE October 16, 2020 at 13:00 EEST

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO AUSTRALIA, CANADA, HONG KONG, JAPAN, NEW ZEALAND OR SOUTH AFRICA OR IN ANY OTHER JURISDICTION IN WHICH THE TENDER OFFER WOULD BE PROHIBITED BY APPLICABLE LAW.

On September 24, 2020, Spa Holdings 3 Oy (the "Offeror") announced that it will make a voluntary public cash tender offer to acquire all of the issued and outstanding shares in Ahlstrom-Munksjö Oyj ("Ahlstrom-Munksjö") that are not held by Ahlstrom-Munksjö or any of its subsidiaries (the "Tender Offer").

The Board of Directors of Ahlstrom-Munksjö has on October 16, 2020, decided to issue the attached statement regarding the Tender Offer as required by the Finnish Securities Markets Act.

Additional information:

Jaakko Eskola, Chairman of the Board of Directors, tel. +358 10 709 5602, jaakko.eskola@wartsila.com

IMPORTANT INFORMATION

THIS RELEASE MAY NOT BE RELEASED OR OTHERWISE DISTRIBUTED, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO, AUSTRALIA, CANADA, HONG KONG, JAPAN, NEW ZEALAND OR SOUTH AFRICA OR IN ANY OTHER JURISDICTION IN WHICH THE TENDER OFFER WOULD BE PROHIBITED BY APPLICABLE LAW.

THIS RELEASE IS NOT A TENDER OFFER DOCUMENT AND AS SUCH DOES NOT CONSTITUTE AN OFFER OR INVITATION TO MAKE A SALES OFFER. IN PARTICULAR, THIS RELEASE IS NOT AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY SECURITIES DESCRIBED HEREIN, AND IS NOT AN EXTENSION OF THE TENDER OFFER, IN, AUSTRALIA, CANADA, HONG KONG, JAPAN, NEW ZEALAND OR SOUTH AFRICA. INVESTORS SHALL ACCEPT THE TENDER OFFER FOR THE SHARES ONLY ON THE BASIS OF THE INFORMATION PROVIDED IN A TENDER OFFER DOCUMENT. OFFERS WILL NOT BE MADE DIRECTLY OR INDIRECTLY IN ANY JURISDICTION WHERE EITHER AN OFFER OR PARTICIPATION THEREIN IS PROHIBITED BY APPLICABLE LAW OR WHERE ANY TENDER OFFER DOCUMENT OR REGISTRATION OR OTHER REQUIREMENTS WOULD APPLY IN ADDITION TO THOSE UNDERTAKEN IN FINLAND.

THE TENDER OFFER IS NOT BEING MADE DIRECTLY OR INDIRECTLY IN ANY JURISDICTION WHERE PROHIBITED BY APPLICABLE LAW AND, WHEN PUBLISHED, THE TENDER OFFER DOCUMENT AND RELATED ACCEPTANCE FORMS WILL NOT AND MAY NOT BE DISTRIBUTED, FORWARDED OR TRANSMITTED INTO OR FROM ANY JURISDICTION WHERE PROHIBITED BY APPLICABLE LAWS OR REGULATIONS. IN PARTICULAR, THE TENDER OFFER IS NOT BEING MADE, DIRECTLY OR INDIRECTLY, IN OR INTO, OR BY USE OF THE POSTAL SERVICE OF, OR BY ANY MEANS OR INSTRUMENTALITY (INCLUDING, WITHOUT LIMITATION, FACSIMILE TRANSMISSION, TELEX, TELEPHONE OR THE INTERNET) OF INTERSTATE OR FOREIGN COMMERCE OF, OR ANY FACILITIES OF A NATIONAL SECURITIES EXCHANGE OF, AUSTRALIA, CANADA, HONG KONG, JAPAN, NEW ZEALAND OR SOUTH AFRICA. THE TENDER OFFER CANNOT BE ACCEPTED, DIRECTLY OR INDIRECTLY, BY ANY SUCH USE, MEANS OR INSTRUMENTALITY OR FROM WITHIN, AUSTRALIA, CANADA, HONG KONG, JAPAN, NEW ZEALAND OR SOUTH AFRICA AND ANY PURPORTED ACCEPTANCE OF THE TENDER OFFER RESULTING DIRECTLY OR INDIRECTLY FROM A VIOLATION OF THESE RESTRICTIONS WILL BE INVALID.

THIS STOCK EXCHANGE RELEASE HAS BEEN PREPARED IN COMPLIANCE WITH FINNISH LAW, THE RULES OF NASDAQ HELSINKI AND THE HELSINKI TAKEOVER CODE AND THE INFORMATION DISCLOSED MAY NOT BE THE SAME AS THAT WHICH WOULD HAVE BEEN DISCLOSED IF THIS ANNOUNCEMENT HAD BEEN PREPARED IN ACCORDANCE WITH THE LAWS OF JURISDICTIONS OUTSIDE OF FINLAND.

Information for shareholders of Ahlstrom-Munksjö in the United States

Shareholders of Ahlstrom-Munksjö in the United States are advised that the shares in Ahlstrom-Munksjö that are the subject of the Tender Offer are not listed on a U.S. securities exchange and that Ahlstrom-Munksjö is not subject to the periodic reporting requirements of the U.S. Securities Exchange Act of 1934, as amended (the "Exchange Act"), and is not required to, and does not, file any reports with the U.S. Securities and Exchange Commission (the "SEC") thereunder.

The Tender Offer will be made for the issued and outstanding shares of Ahlstrom-Munksjö, which is domiciled in Finland, and is subject to Finnish disclosure and procedural requirements. The Tender Offer is made in the United States pursuant to Section 14(e) and Regulation 14E under the Exchange Act, and otherwise in accordance with the disclosure and procedural requirements of Finnish law, including with respect to the Tender Offer timetable, settlement procedures, withdrawal, waiver of conditions and timing of payments, which are different from those of the United States. In particular, the financial information included in this announcement has been prepared in accordance with applicable accounting standards in Finland, which may not be comparable to the financial statements or financial information of U.S. companies. The Tender Offer is made to Ahlstrom-Munksjö's shareholders resident in the United States on the same terms and conditions as those made to all other shareholders of Ahlstrom-Munksjö to whom an offer is made. Any informational documents, including this announcement, are being disseminated to U.S. shareholders on a basis comparable to the method that such documents are provided to Ahlstrom-Munksjö's other shareholders.

To the extent permissible under applicable law or regulations, the Offeror and its affiliates or its brokers and its brokers' affiliates (acting as agents for the Offeror or its affiliates, as applicable) may from time to time after the date of this stock exchange release and during the pendency of the Tender Offer, and other than pursuant to the Tender Offer, directly or indirectly purchase or arrange to purchase shares in Ahlstrom-Munkjö that are the subject of the Tender Offer or any securities that are convertible into, exchangeable for or exercisable for such shares. These purchases may occur either in the open market at prevailing prices or in private transactions at negotiated prices. To the extent information about such purchases or arrangements to purchase is made public in Finland, such information will be disclosed by means of a press release or other means reasonably calculated to inform U.S. shareholders of Ahlstrom-Munksjö of such information. In addition, the financial advisers to the Offeror may also engage in ordinary course trading activities in securities of Ahlstrom-Munksjö, which may include purchases or arrangements to purchase such securities. To the extent required in Finland, any information about such purchases will be made public in Finland in the manner required by Finnish law.

Neither the SEC nor any U.S. state securities commission has approved or disapproved the Tender Offer, passed upon the merits or fairness of the Tender Offer, or passed any comment upon the adequacy, accuracy or completeness of the disclosure in relation to the Tender Offer. Any representation to the contrary is a criminal offence in the United States.

The receipt of cash pursuant to the Tender Offer by a U.S. shareholder may be a taxable transaction for U.S. federal income tax purposes and under applicable U.S. state and local, as well as foreign and other, tax laws. Each shareholder of Ahlström-Munksjö is urged to consult its independent professional advisers immediately regarding the tax consequences of accepting the Tender Offer.

It may be difficult for Ahlstrom-Munksjö's shareholders to enforce their rights and any claims they may have arising under the U.S. federal securities laws, since the Offeror and Ahlstrom-Munksjö are located in non-U.S. jurisdictions and some or all of their respective officers and directors may be residents of non-U.S. jurisdictions. Ahlstrom-Munksjö shareholders may not be able to sue the Offeror or Ahlstrom-Munksjö or their respective officers or directors in a non-U.S. court for violations of the U.S. federal securities laws. It may be difficult to compel the Offeror and Ahlstrom-Munksjö and their respective affiliates to subject themselves to a U.S. court's judgment.

Disclaimer

UBS Europe SE, authorised and regulated by the Bundesanstalt für Finanzdienstleistungaufsicht (BaFin) and the European Central Bank (ECB), is acting exclusively for Ahlstrom-Munksjö and no one else in connection with the Tender Offer or the matters referred to in this document, will not regard any other person (whether or not a recipient of this document) as its client in relation to the Tender Offer and will not be responsible to anyone other than Ahlstrom-Munksjö for providing the protections afforded to its clients or for providing advice in relation to the Tender Offer or any other transaction or arrangement referred to in this document.

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 include filter materials, release liners, food and beverage processing materials, decor papers, abrasive and tape backings, electrotechnical paper, glass fiber materials, medical fiber materials and solutions for diagnostics as well as a range of specialty papers for industrial and consumer end-uses. Our annual net sales is about EUR 3 billion and we employ some 8,000 people. The Ahlstrom-Munksjö share is listed on the Nasdaq Helsinki and Stockholm. Read more at www.ahlstrom-munksjo.com

https://news.cision.com/ahlstrom-munksjo/r/statement-of-the-board-of-directors-of-ahlstrom-munksjo-oyj-regarding-the-voluntary-public-cash-tend,c3217348

https://mb.cision.com/Main/15160/3217348/1319966.pdf

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