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 Management (UK) Limited	London	United kingdom

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 rights attached to shares (total of 8.A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer
Resulting situation on the date on which threshold was crossed or reached	8.667357	1.363864	10.031221	7,032,816
Position of previous notification (if applicable)	5.104711	0.247709	5.352420

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 of shares ISIN code(if possible)	Number of direct voting rights (DTR5.1)	Number of indirect voting rights (DTR5.2.1)	% of direct voting rights (DTR5.1)	% of indirect voting rights (DTR5.2.1)
GB0004866223		6,076,621		8.667357
Sub Total 8.A	6,076,621		8.667357

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument	Expiration date	Exercise/conversion period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights
Sub Total 8.B1

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument	Expiration date	Exercise/conversion period	Physical or cash settlement	Number of voting rights	% of voting rights
Cash Settled – Equity Swaps	N/A	N/A	Cash	956,195	1.363864
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 controlling person	Name of controlled undertaking	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
JPMorgan Asset Management Holdings Inc	JPMorgan Asset Management (UK) Limited	7.620512		8.983556%
JPMorgan Asset Management Holdings Inc	J.P. Morgan Investment Management Inc.
JPMorgan Asset Management Holdings Inc.	JPMorgan Asset Management (Japan) Limited
JPMorgan Asset Management Holdings Inc	J.P. Morgan Alternative Asset Management, Inc
JPMorgan Asset Management Holdings Inc.	JPMorgan Asset Management (Asia Pacific) Limited
JPMorgan Asset Management Holdings Inc.	JPMorgan Asset Management (Singapore) Limited
JPMorgan Asset Management Holdings Inc	JPMorgan Asset Management (China) Company Limited
JPMorgan Asset Management Holdings Inc	JP Morgan chase Bank, N.A
JPMorgan Asset Management Holdings Inc	JPMorgan Asset Management (Taiwan) 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

CONTACT:

Enquiries:

Jamie Dearsley

Assistant Company Secretary

[phone]

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.

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