Keller Group Plc - Holding(s) in Company

TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB0004866223 Issuer Name KELLER GROUP PLC UK or Non-UK Issuer UK 2. Reason for Notification An acquisition or disposal of voting rights 3. Details of person subject to the notification obligation Name JPMorgan Asset Management Holdings Inc. City of registered office (if applicable) Wilmington Country of registered office (if applicable) United States of America 4. Details of the shareholder Name City of registered office Country of registered office JPMorgan Asset London United kingdom Management (UK) Limited 5. Date on which the threshold was crossed or reached 01-May-2026 6. Date on which Issuer notified 05-May-2026 7. Total positions of person(s) subject to the notification obligation . % of voting % of voting rights Total of Total rights through financial both number of attached to instruments (total in % (8.A voting shares of 8.B 1 + 8.B 2) + rights held (total 8.B) in issuer of 8.A) Resulting 8.667357 1.363864 10.031221 7,032,816 situation on the date on which threshold was crossed or reached Position of 5.104711 0.247709 5.352420 previous notification (if applicable) 8. Notified details of the resulting situation on the date on which the threshold was crossed or reached 8A. Voting rights attached to shares Class/Type Number of Number of indirect % of direct % of indirect of shares direct voting rights voting rights voting rights ISIN code(if voting (DTR5.2.1) (DTR5.1) (DTR5.2.1) possible) rights (DTR5.1) GB0004866223 6,076,621 8.667357 Sub Total 6,076,621 8.667357 8.A 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Type of Expiration Exercise/ Number of voting rights that may be % of financial date conve acquired if the instrument is voting instrument rsion exercised/converted rights period Sub Total 8.B1 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of Expiration Exercise/conve Physical or Number of % of financial date rsion period cash voting voting instrument settlement rights rights Cash Settled - N/A N/A Cash 956,195 1.363864 Equity Swaps Sub Total 8.B2 956,195 1.363864 9. Information in relation to the person subject to the notification obligation 2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary) Ultimate Name of % of voting rights % of voting Total of both if controlling controlled if it equals or is rights it equals or is person undertaking higher than the through higher than the notifiable financial notifiable threshold instruments threshold if it equals or is higher than the notifiable threshold JPMorgan JPMorgan 7.620512 8.983556% Asset Asset Management Management Holdings (UK) Inc Limited JPMorgan J.P. Morgan Asset Investment Management Management Holdings Inc. Inc JPMorgan JPMorgan Asset Asset Management Management Holdings (Japan) Inc. Limited JPMorgan J.P. Morgan Asset Alternative Management Asset Holdings Management, Inc Inc JPMorgan JPMorgan Asset Asset Management Management Holdings (Asia Inc. Pacific) Limited JPMorgan JPMorgan Asset Asset Management Management Holdings (Singapore) Inc. Limited JPMorgan JPMorgan Asset Asset Management Management Holdings (China) Inc Company Limited JPMorgan JP Morgan Asset chase Bank, Management N.A Holdings Inc JPMorgan JPMorgan Asset Asset Management Management Holdings (Taiwan) Inc Limited 10. In case of proxy voting Name of the proxy holder The number and % of voting rights held The date until which the voting rights will be held 11. Additional Information Chain of controlled undertakings: JPMorgan Asset Management Holdings Inc JPMorgan Asset Management International Limited (100%) JPMorgan Asset Management (UK) Limited (100%) JPMorgan Asset Management Holdings Inc J.P. Morgan Investment Management Inc. (100%) JPMorgan Asset Management Holdings Inc JPMorgan Asset Management (Asia) Inc. (100%) JPMorgan Asset Management (Japan) Limited (100%) JPMorgan Asset Management Holdings Inc J.P. Morgan Alternative Asset Management, Inc. (100%) JPMorgan Asset Management Holdings Inc. JPMorgan Asset Management (Asia) Inc. (100%) JPMorgan Asset Management (Asia Pacific) Limited (100%) JPMorgan Asset Management Holdings Inc. JPMorgan Asset Management (Asia) Inc. (100%) JPMorgan Asset Management (Singapore) Limited (100%) JPMorgan Asset Management Holdings Inc. JPMorgan Asset Management (China) Company Limited (100%) JPMorgan Asset Management Holdings Inc. JPMorgan Asset Management (Asia) Inc. (100%) JPMorgan Asset Management (Taiwan) Limited (100%) JPMorgan Asset Management Holdings Inc JP Morgan chase Bank, N.A. (100%) 12. Date of Completion 05-May-2026 13. Place Of Completion Hyderabad, India Enquiries: Jamie Dearsley Assistant Company Secretary +44 7824 584 151 Keller Group plc LEI Number:         549300QO4MBL43UHSN10 Notes to editors: Keller is the world's largest geotechnical specialist contractor providing a wide portfolio of advanced foundation and ground improvement techniques used across the entire construction sector. With around 10,000 staff and operations across five continents, Keller tackles an unrivalled 5,500 projects every year, generating annual revenue of c. £3bn. This information was brought to you by Cision http://news.cision.com