Tieto: Share repurchases on week 35

Tieto Corporation    Stock exchange release    28 Aug 2026 at 06:30 p.m. EET Tieto: Share repurchases on week 35 In the Helsinki Stock Exchange Date Quantity Average price Total price 24.8.2026 50 000 19,1719 958 595,00 25.8.2026 50 000 19,2582 962 910,00 26.8.2026 60 000 19,2623 1 155 738,00 27.8.2026 60 000 19,4891 1 169 346,00 28.8.2026 40 693 19,6733 800 565,60 Total in week 35 260 693 19,3605 5 047 154,60 Tieto now holds a total of 2,307,693 shares including the shares repurchased on 28.8.2026 The share buybacks are executed in compliance with Regulation  No. 596/2014 of the European Parliament and Council (MAR) Article 5 and the Commission Delegated Regulation (EU) 2016/1052. On behalf of Tieto Corporation Nordea Bank Oyj Sami Huttunen Ilari Isomäki For further information, please contact: Tommi Järvenpää, Head of Investor Relations, tel. +358 40 576 0288, tommi.jarvenpaa(at)tieto.com Distribution NASDAQ Helsinki NASDAQ Stockholm 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 13 000 talented vertical software, design, cloud and AI experts are dedicated to empowring 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. www.tieto.com