On September 24, 2020, Ahlstrom Holding 3 Oy made a public recommended cash tender offer for all shares in Ahlstrom Oyj (previously named Ahlstrom-Munksjö Oyj). Ahlstrom Holding 3 Oy received an ownership of more than 90% on February 4, 2021 and started a compulsory redemption procedure. On February 25, 2022, the arbitral tribunal appointed by the Redemption Board of the Finland Chamber of Commerce rendered its decision according to which the redemption price payable by Ahlstrom Holding 3 Oy for the 10,755,918 Ahlstrom Oyj's minority shares that are subject to mandatory redemption shall be EUR 21.55 per share. On April 29, 2022, Ahlstrom Holding 3 Oy filed an appeal with the District Court of Helsinki, requesting the District Court to confirm the redemption price of the minority shares in Ahlstrom Oyj to be EUR 17.84 per share, corresponding with the price offered in the public tender offer. Amongst others, the trustee who represents the minority shareholders, also filed their appeal with the District Court.

The District Court of Helsinki rendered its decision on August 31, 2023. The District Court ruled that the redemption price payable by Ahlstrom Holding 3 Oy for the 10,755,918 Ahlstrom Oyj's minority shares that are subject to mandatory redemption shall be EUR 17.84 per share.

The time to seek leave to appeal from the Supreme Court of Finland expired on October 30, 2023. Amongst others, the trustee who represents all minority shareholders sought leave to appeal from the Supreme Court. On April 15, 2024, the Supreme Court announced that it has granted a leave to appeal for the minority shareholders. The Supreme Court will address the assessment of the redemption price of Ahlstrom Oyj's minority shares.

As the trustee has been granted leave to appeal, a decision regarding the redemption price will not become final and non-appealable for any of the minority shareholders until the Supreme Court renders a final decision in the matter. It is estimated that the appeal proceedings may last at least until the first half of 2025. According to the Companies Act, the redemption price falls due after a month has passed from the decision on redemption becoming non-appealable.