Commencement of new plan periods in long-term incentive plans targeted to Metso management and key employees

Metso Corporation's stock exchange release on December 20, 2023, at 3:20 p.m.
EET

The Board of Directors of Metso Corporation has approved the commencement of a
new plan period 2024-2026 in the following share-based long-term incentive
programs of the Company: The Performance Share Plan (also "PSP") and the
Restricted Share Plan (also "RSP").

Metso originally announced the establishment of the PSP and the RSP structure on
July 1, 2020.

PSP 2024-2026

PSP 2024-2026 is subject to achieving performance targets set by the Board of
Directors, measured over a three-year performance period.  Subject to
achievement of these targets, awards will be delivered in 2027 in listed shares
of Metso Corporation.

This award is subject to performance targets based on the absolute total
shareholder return of Metso's shares, earnings per share and development in
sustainability, which is linked to the sales growth of the company's Planet
Positive offering.

Sustainability is a strategic priority for Metso and the company is committed to
the 1.5-degree climate target. Metso's Planet Positive product portfolio
consists of those products and technologies, which have the most significant
impact on its customers' targets related to the reduction of emissions or the
improvement of energy and water efficiency.

Approximately 200 key employees of Metso, including the members of Metso
Leadership Team, are eligible to participate in PSP 2024-2026.

If the performance targets set for the PSP 2024-2026 are fully achieved, the
aggregate maximum number of shares to be paid based on this Plan is
approximately 2,170,000 shares (referring to gross earnings before the
withholding of the applicable payroll tax).

The estimated aggregate gross value of PSP 2024-2026, based on the current value
of Metso's share, is approximately EUR 20.2 million.

RSP 2024-2026

RSP 2024-2026 comprises a three-year retention period, with awards potentially
delivered in 2027 in listed shares of Metso Corporation.

The aggregate maximum number of shares to be paid based on RSP 2024-2026 is
approximately 434,000 shares (referring to gross earnings before the withholding
of the applicable payroll tax).

The final materialized value of each of the above-mentioned plans may deviate
significantly from the above estimate, based on both the degree to which the
performance targets set by the Board of Directors are being achieved (regarding
PSP) and as a result of changes in Metso's share price.

METSO CORPORATION

Board of Directors

Further information:

Nina Kiviranta, General Counsel, tel. +358 20 529 2017

Juha Rouhiainen, Vice President, Investor Relations, tel. +358 20 484 3253


Distribution:

Nasdaq Helsinki Ltd

Main media

www.metso.com

Metso is a frontrunner in providing sustainable technologies, end-to-end
solutions and services for the aggregates, minerals processing and metals
refining industries globally. By helping our customers increase their
productivity, improve their energy and water efficiency and environmental
performance with our process and product expertise, we are the partner for
positive change.

Headquartered in Espoo, Finland, Metso employs over 16,000 people in close to 50
countries and sales for 2022 were about EUR 5.3 billion. The company is listed
on the Nasdaq Helsinki. metso.com, x.com/metsoofficial