Tieto Corporation STOCK EXCHANGE RELEASE        21 May 2026 5:00 p.m. EEST

NOT FOR DISTRIBUTION IN OR INTO OR TO ANY PERSON LOCATED OR RESIDENT IN THE UNITED STATES OF AMERICA, ITS TERRITORIES AND POSSESSIONS (INCLUDING PUERTO RICO, THE U.S. VIRGIN ISLANDS, GUAM, AMERICAN SAMOA, WAKE ISLAND AND THE NORTHERN MARIANA ISLANDS), ANY STATE OF THE UNITED STATES OF AMERICA OR THE DISTRICT OF COLUMBIA (THE "UNITED STATES") OR IN OR INTO OR TO ANY PERSON RESIDENT OR LOCATED IN ANY OTHER JURISDICTION WHERE IT IS UNLAWFUL TO RELEASE, PUBLISH OR DISTRIBUTE THIS DOCUMENT.

Tieto Corporation (the "Company") issues unrated senior unsecured Notes in the aggregate principal amount of EUR 300 million (the "Notes"). The Notes will mature on 28 May 2031 and carry a fixed annual interest of 4.375 percent. The issue date for the Notes will be 28 May 2026.

The Company will submit an application for the Notes to be admitted to trading on the official list of Nasdaq Helsinki Ltd.

The Company intends to use the proceeds of the Notes, less costs and expenses incurred by the Company in connection with the issue of the Notes, for refinancing existing debt and general corporate purposes of the Group.

Danske Bank A/S, Nordea Bank Abp and OP Corporate Bank plc act as joint lead managers for the issue of the Notes (the "Joint Lead Managers").

For further information, please contact:

Janne Salminen, Group Treasurer, tel. +358 50 359 8521, janne.salminen(at)tieto.com

Tommi Järvenpää, Head of Investor Relations, tel. +358 40 576 0288, tommi.jarvenpaa(at)tieto.com

Tieto Corporation

Distribution

NASDAQ Helsinki

NASDAQ Stockholm

Oslo Børs

Principal media

Tieto is a leading software and digital engineering services company with global market reach and capabilities. We provide customers across different industries with mission-critical solutions through our specialized software businesses Tieto Caretech, Tieto Banktech and Tieto Indtech as well as Tieto Tech Consulting business. Our around 14 000 talented vertical software, design, cloud and AI experts are dedicated to empowering our customers to succeed and innovate with latest technology.

Tieto's annual revenue is approximately EUR 2 billion. The company's shares are listed on the NASDAQ exchange in Helsinki and Stockholm, as well as on Oslo Børs.

Important information

This release is for information purposes only and is not to be construed as an offer to purchase or sell or a solicitation of an offer to purchase or sell with respect to any securities of the Company. No actions have been taken to register or qualify the Notes, or otherwise to permit a public offering of the Notes, in any jurisdiction. The distribution of this release and the related material concerning the issuance of the Notes may, in certain jurisdictions, be restricted by law. Persons into whose possession this release or any such material may come are required to inform themselves of and observe all such restrictions. This release and any such material may not be distributed or published in any country or jurisdiction if to do so would constitute a violation of the relevant laws of such jurisdiction or would require actions under the laws of a state or jurisdiction other than Finland. In particular, this release and any such material may not be distributed in the United States, Australia, Canada, Hong Kong, Japan, New Zealand, Singapore or South Africa and any related material concerning the issuance of the Notes may not be sent to any person in the before mentioned jurisdictions except in circumstances that will result in compliance with any applicable laws and regulations. Neither the Company nor the Joint Lead Managers, or their representatives accept any legal responsibility for any violation by any person, whether or not the persons contemplating investing in or divesting the Company's securities, including the Notes, are aware of such restrictions.

The Notes have not been and will not be registered under the U.S. Securities Act of 1933 (as amended, the "U.S. Securities Act"), or under the securities laws of any state or other jurisdiction of the United States. The Notes may not be offered, sold, pledged or otherwise transferred directly or indirectly within the United States or to, or for the account or benefit of, U.S. Persons (as such terms are defined in Regulation S under the U.S. Securities Act), except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act.

The information provided in this release is addressed to and directed only at persons in the United Kingdom in circumstances where provisions of section 21(1) of the Financial Services and Markets Act 2000 as amended, do not apply and are solely directed at persons in the United Kingdom who (a) have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the "Order"), (b) persons falling within Article 43 of the Order or (c) persons falling within Article 49(2)(a) to (d) of the Order, or other persons to whom they may be lawfully communicated (all such persons together being referred to as "relevant persons"). This release is directed only at relevant persons and any person who is not a relevant person must not act or rely on this release or any of its contents.