REG-Keller Group Plc: Holding(s) in Company

KellerAnnouncement

Tue 16:45

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

+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.



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