Wärtsilä Oyj Abp

Major Shareholding Notification • Oct 29, 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, 29 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 above the
5% disclosure limit on holding in shares and voting rights on 28 October 2025.
Following the transaction, BlackRock, Inc. owns 4.92% of Wärtsilä's shares and
voting rights, while its total holding in Wärtsilä Corporation corresponds to
5.01%.

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

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

Class / type Number of % of
of shares shares and shares
voting and
rights voting
rights
Direct Indirect (SMA Direct Indirect (SMA 9:6 and 9:7)
(SMA 9:5) 9:6 and 9:7) (SMA
9:5)
FI0009003727 29,142,069 4.92%
SUBTOTAL A 29,142,069 4.92%

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 128 0.00%
Depositary
Receipt
(US9365441057)
Securities N/A N/A Physical 210,659 0.03%
Lent
CFD N/A N/A Cash 330,907 0.05%
SUBTOTAL B 541,694 0.09%