SanomaWSOY Corporation has supplemented the prospectus on the combination of share series and the directed issue to the holders of Series A shares published on April 4, 2006 with its January-March Interim Report published on May 4, 2006. The Finnish Financial Supervision Authority has approved the supplement on May 4, 2006.

SanomaWSOY Corporation supplements the prospectus by reference. The supplement of the prospectus and the Interim Report incorporated by reference are available at IR and Group Communications, SanomaWSOY Corporation, P.O.Box 1229, FI-00101 Helsinki or in pdf format on the Company's website at www.sanomawsoy.fi. The supplement is also attached to the prospectus in all venues where the prospectus is available.

In accordance with the terms and conditions of the directed issue, all investors who have subscribed for shares before the supplement was published are, in accordance with the Finnish Securities Markets Act, entitled to cancel their subscriptions. The investor shall notify in writing the subscription place, through which the subscription has been made, of the subscription cancellation. The right of cancellation is exercisable within two banking days upon the release of the supplement, i.e. the cancellation period ends on May 8, 2006.

If the subscription is cancelled, the subscription price will be returned to the cash account and the subscription rights will be returned to the book-entry account indicated by the investor in connection with the subscription. The refund will be effected as soon as possible after the cancellation of subscription, on or about three banking days after the subscription place has been notified of the cancellation.

Any sale or other transfers of subscription rights may not be cancelled.

Additional information: SanomaWSOY's Group Communications, tel. +385 105 19 5062 or ir@sanomawsoy.fi

The shares are offered, in addition to shareholders in Finland, to Holders of Series A shares who live in an EEA member country if the number of the Holders of Series A shares in each member country is less than one hundred and the member country in question has implemented Directive 2003/71/EYof the European Parliament and of the Council and the Directive's Article 3, Section 2 (b) or the member state otherwise applies a similar rule. In accordance with the relevant section securities may be offered without an obligation to prepare a prospectus if the offer is targeted to less than one hundred investors who are other than qualified investors, in each member state.

This document is not an offer to subscribe for the shares or to buy the subscription rights. The shares shall not be registered outside Finland and the prospectus prepared in connection of the offer has not been approved by any competent authority other than the Finnish Financial Supervision Authority. Other investors than those who are in Finland or Holders of Series A shares referred to in the above paragraph may be prohibited to receive the prospectus, buy subscription rights or subscribe for the shares. The shares may not be offered or sold, directly or indirectly in any jurisdiction, except in circumstances that will not be in violence with all applicable laws and regulations.

THE OFFER SHARESOR SUBSRIBTION RIGHTS HAVE NOT BEEN AND WILL NOT BE REGISTERED UNDER THE U.S. SECURITIES ACT OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO U.S. PERSONS EXCEPT PURSUANT TO AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE U.S. SECURITIES ACT AND OUTSIDE THE UNITED STATES IN COMPLIANCE WITH REGULATION S.


SANOMAWSOY CORPORATION


Matti Salmi
Senior Vice President
Finance and Administration


DISTRIBUTION
Helsinki Stock Exchange
Principal media