Changes in the ownership of treasury shares of Metsä Board Corporation

Metsä Board Corporation Stock Exchange Release Changes in company's own shares
29 August 2025 at 1:00 pm EEST

Former Chair of the Board of Directors of Metsä Board Corporation (“Metsä Board”
or the “Company”), Mr. Ilkka Hämälä, has resigned from his duties on the Board
of Directors effective 1 July 2025 in accordance with the stock exchange release
given on 12 June 2025. Pursuant to the resolution of the Annual General Meeting
of Metsä Board held on 20 March 2025, a portion of Mr. Hämälä's annual
remuneration was provided in Metsä Board's B shares on 30 April 2025. Following
the resignation of Mr. Hämälä, the Company has today received from him, without
consideration, a total of 10,738 B shares, which had previously been acquired to
him as annual remuneration. The received amount of shares corresponds to
approximately 8.5 months of the Board term that was not realised, and the paid
remuneration has therefore been adjusted to reflect the actual term served by
Mr. Hämälä.

Following the return of these shares, the Company holds a total of 352,444 of
its own B shares.

On 31 July 2025, Metsä Board announced that Erja Hyrsky would step down from the
Company's Board of Directors with immediate effect following her appointment as
SVP, Commercial Operations as of 1 August 2025. It was also agreed with Hyrsky
that her annual remuneration would be proportionally adjusted to reflect the
actual term served on the Board of Directors, which amounted to approximately
4.5 months. However, the portion of the annual remuneration subject to return
has been incorporated into her overall compensation as an employee of Metsä
Board, and therefore the total number of shares held by the Company remains
unchanged.

METSÄ BOARD CORPORATION

Further information:
Katri Sundström, VP, Investor Relations, tel. +358 10 462 0101
Eeva Impiö-Loimaala, General Counsel, tel. +358 44 040 3877

Metsä Board
metsagroup.com/metsaboard (http://www.metsagroup.com/metsaboard/)

Metsä Board is a producer of lightweight and high-quality folding boxboards,
food service boards and white kraftliners. The fresh wood fibres we use in our
products are a renewable and recyclable resource, that can be traced back to
Northern European forests. We aim to have completely fossil-free mills and raw
materials by 2030. We promote a culture of diversity, equality and inclusion.

Metsä Board is listed on the Nasdaq Helsinki. In 2024 our sales totalled EUR 1.9
billion, and we have around 2,300 employees. Metsä Board is part of Metsä Group,
whose parent company Metsäliitto Cooperative is owned by over 90,000 Finnish
forest owners.

Follow Metsä Board:
LinkedIn (https://www.linkedin.com/company/metsa
-board/)   Instagram (https://www.instagram.com/metsaboard/?hl=en)
 YouTube (https://www.youtube.com/playlist?list=PLF6CD152EF0DA1E61)