Kainos Group Regulatory News (KNOS)

18th May 2026

Kainos Group plc

("Kainos" or the "Company") 

Transaction in Own Shares

Kainos Group PLC ("the "Company") announces it has purchased the following number of its ordinary shares of 0.5 pence each through Investec Bank plc. 

The Company intends to cancel the purchased shares.

The table below contains detailed information about the purchases made as part of the buyback programme which was announced by the Company in its Interim Results announcement on 10th November 2025 and took effect on 19th November 2025 (the "Programme") in the period from 11th May 2026 to 15th May 2026.

The Company confirms that its share buyback programme, as announced on 10th November 2025, is now complete.

Aggregate Information

Schedule of Purchases - Individual Transactions

In accordance with Article 5(1)(b) of Market Abuse Regulation (EU) No 596/2014 (as it forms part of the law of the United Kingdom by virtue of the European Union (Withdrawal) Act 2018, as implemented, retained, amended, extended, re-enacted or otherwise given effect in the United Kingdom from 1 January 2021 and as amended or supplemented in the United Kingdom thereafter) a full breakdown of the individual trades made by the Investec Bank on behalf of the Company as part of the buyback programme is attached to this announcement.http://www.rns-pdf.londonstockexchange.com/rns/5903E_1-2026-5-15.pdf

Ends

For further information, please contact:

Kainos  via FTI Consulting LLPBrendan Mooney, Chief Executive OfficerRichard McCann, Chief Financial Officer

Investec Bank plc +44 20 7597 5970Patrick Robb / Nick Prowting / Arnav Kapoor

FTI Consulting LLP +44 20 3727 1000Dwight Burden / Kwaku Aning

About Kainos Group plc Kainos Group plc is a UK-headquartered provider of sophisticated IT services to major public sector, commercial and healthcare customers and a developer of software applications. Our shares are listed on the London Stock Exchange (LSE: KNOS).Our expertise spans three divisions: Digital Services, Workday Services, and Workday Products.Digital ServicesOur Digital Services customers face a range of business challenges, including the need to improve their customer service, reduce costs and increase productivity. We help them to solve these problems by developing and supporting custom digital service platforms. Our solutions enable customers and their users to work smarter, faster and better, while ensuring the platforms are secure, accessible and cost effective.Workday ServicesWe are a respected partner to Workday Inc., providing a comprehensive range of services to support customers deploying Workday's Finance, HR and Planning products. Our experience in complex deployments means we are trusted to launch, test, expand and support Workday systems.Workday ProductsWe have developed proprietary software products that complement Workday by enhancing our customers' system security and compliance and improving their document generation and storage. Over 600 global customers use one or more of our products, with adoption growing rapidly.Our peopleOur people are central to our success. We employ more than 3,100 people in 18 countries across Europe, Asia and the Americas. Find out moreYou can discover more about us at www.kainos.com.