Tieto

Tieto Corporation        STOCK EXCHANGE RELEASE         23 June 2026 4:00 p.m. EEST

Tieto Corporation has received a notification in accordance with Chapter 9, Section 5 of the Finnish Securities Markets Act. The holding of Incentive AS has fallen below the 5% threshold on 22 June 2026.

Incentive AS acts as discretionary portfolio manager on behalf of certain funds and separately managed accounts.

Tieto’s registered total number of shares and voting rights is currently 115 480 150.

For further information, please contact

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.