Wärtsilä Oyj Abp

Major Shareholding Notification • Oct 31, 2025

Notification in accordance with the Finnish Securities Market Act Chapter 9 § 10: BlackRock, Inc.'s holding in Wärtsilä Corporation

Notification in accordance with the Finnish Securities Market Act Chapter 9 § 10: BlackRock, Inc.'s holding in Wärtsilä Corporation

Wärtsilä Corporation, flagging notification, 31 October 2025 at 15:30 EET

Notification in accordance with the Finnish Securities Market Act Chapter 9 §
10: BlackRock, Inc.'s holding in Wärtsilä Corporation
BlackRock, Inc. has informed Wärtsilä Corporation that it has crossed below the
5% disclosure limit on holding in shares and voting rights on 30 October 2025.

Total position of BlackRock, Inc. and its funds subject to the notification:

              % of    % of shares  Total of   Total number of shares
              shares  and voting   both in %  and voting rights of
              and     rights                  issuer
              voting  through
              rights  financial
                      instruments

Resulting Below Below 5% Below 5% 591,723,390
situation on the 5%
date on
which threshold
was crossed or
reached
Position of 4.92% 0.09% 5.01%
previous
notification
(if applicable)

Notified details of the resulting situation on the date on which the threshold
was crossed:
A: Shares and voting rights

Class / type Number % of
of shares of shares
shares and
and voting
voting rights
rights
Direct Indirect (SMA Direct Indirect (SMA 9:6 and 9:7)
(SMA 9:6 and 9:7) (SMA
9:5) 9:5)
FI0009003727 Below 5% Below 5%
SUBTOTAL A Below 5% Below 5%

B: Financial instruments according to SMA 9:6a

Type of Expiration Exercise / Physical Number % of shares
financial date Conversion or of and voting
instrument Period cash shares rights
settlement and
voting
rights
American N/A N/A Physical Below 5% Below 5%
Depositary
Receipt
(US9365441057)
Securities N/A N/A Physical Below 5% Below 5%
Lent
CFD N/A N/A Cash Below 5% Below 5%
SUBTOTAL B Below 5% Below 5%