Wärtsilä Oyj Abp

Major Shareholding Notification • Mar 10, 2025

Disclosure 455995

Wärtsilä - Major shareholder announcements

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

Wärtsilä Corporation, flagging notification, 10 March 2025 at 17.30 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, excluding financial instruments according to SMA 9:6a, on 7 March 2025. Following the transaction, BlackRock, Inc. owns 4.77% of Wärtsilä's shares and voting rights, while its total holding in Wärtsilä Corporation corresponds to 5.23%. 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 4.77% 0.45% 5.23% 591,723,390 situation on the date on which threshold was crossed or reached Position of 5.03% 0.45% 5.49% 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 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 28,274,490 4.77% SUBTOTAL A 28,274,490 4.77% B: Financial instruments according to SMA 9:6a Type of Expiration Exercise / Physical or Number of shares % of shares financial date Conversion cash and voting rights and voting instrument Period settlement rights CFD N/A N/A Cash 2,677,748 0.45% SUBTOTAL B 2,677,748 0.45%