SAMPO PLC STOCK EXCHANGE RELEASE 13 October 2010 at 9.40 am Disclosure Under Chapter 2 Section 9 of the Securities Market Act Sampo plc (business code 0142213-3) has on 13 October 2010 received a disclosure under Chapter 2, Section 9 of the Securities Markets Act, according to which the total number of Sampo A shares and related voting rights owned by Capital Research and Management Company has on 11 October 2010 through trades in the course of ordinary business fallen below one twentieth (1/20) of Sampo plc's entire stock and voting rights. Capital Research and Management Company's holding after the disclosure +-----------------+----------------+--------------+-------------+ |Share type |Number of shares|Percent (%) of|Percent (%) | | | |share capital |voting rights| +-----------------+----------------+--------------+-------------+ |A share | | | | | | | | | |ISIN:FI0009003305|27,804,264 |4.9643 |4.9643 | +-----------------+----------------+--------------+-------------+ | | | | | | | | | | |B share |0 |0 |0 | +-----------------+----------------+--------------+-------------+ | | | | | | | | | | |Total |27,804,264 |4.9537 |4.9117 | +-----------------+----------------+--------------+-------------+ Sampo's share capital comprises 561,282,390 shares, of which 560,082,390 are A shares and 1,200,000 are B shares. Each A share entitles its holder to one (1) vote and each B share to five (5) votes. Thus, the total number of votes is 566,082,390. SAMPO PLC Jarmo Salonen Head of Investor Relations and Group Communications tel. +358 10 516 0030 Distribution: NASDAQ OMX Helsinki The principal media Financial Supervisory Authority www.sampo.com [HUG#1451493]