Sampo Oyj

Prospectus • May 10, 2023

Disclosure 432907

Sampo - Prospectus/Announcement of Prospectus

Sampo has published a demerger prospectus for Mandatum

SAMPO PLC STOCK EXCHANGE RELEASE 10 May 2023 at 11:05 am

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Sampo has published a demerger prospectus for Mandatum**

Sampo has prepared and published a Finnish-language demerger prospectus on behalf of Mandatum plc in order to carry out the proposed partial demerger of Sampo plc and listing of Mandatum’s shares on Nasdaq Helsinki in the autumn of 2023.

Sampo’s Board proposed on 29 March 2023 that the Annual General Meeting on 17 May 2023 resolves to approve a partial demerger of Sampo plc. The demerger plan was approved and signed by the Board on 29 March 2023 and registered in Finnish trade register on 30 March 2023.

The Finnish demerger prospectus, approved by the Finnish Financial Supervisory Authority, together with an unofficial English translation, are available at www.sampo.com/demerger.

SAMPO PLC

Investor Relations and Group Communications

For further information, please contact:

Sami Taipalus

Head of Investor Relations

tel. +358 10 516 0030

Distribution:

Nasdaq Helsinki

Nasdaq Stockholm

London Stock Exchange

The principal media

FIN-FSA

www.sampo.com