Keller Group Plc – Director/PDMR Shareholding

4 March 2026

Keller Group plc

Director/PDMR Shareholding

Keller Group plc (the «Company») announces that on 4 March 2026 it was notified
of the following transaction in the Company’s ordinary shares of 10pence each
(«Shares») undertaken by a Person Discharging Managerial Responsibilities:

Paul Leonard, President North America, disposed of 6,812 Shares atGBP 21.69per
Share.

The transaction took place on 4 March 2026 inLondon(XLON).

The Notification of Dealing Form for the PDMR can be found below.

Enquiries:

Keller Group plc
William Harwood, Assistant Company Secretary
Tel: +44 7824 584 247

LEI number:  549300QO4MBL43UHSN10
Classification:2.2 Inside information

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.

NOTIFICATION AND PUBLIC DISCLOSURE OF TRANSACTIONS BY PERSONS DISCHARGING
MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM

+–+———————-+———–+——–+————+—–+
|1 |Details of persons |
| |discharging managerial |
| |responsibility |
| |(«PDMR») |
| | |
| |/ person closely |
| |associated («PCA») |
+–+———————-+———–+——–+————+—–+
|a)|Name |Paul Leonard |
+–+———————-+———–+——–+————+—–+
|2 |Reason for the |
| |notification |
+–+———————-+———–+——–+————+—–+
|a)|Position / status |PDMR |PCA |
| | | | |
| | |(Provide job title) |(Provide |
| | | |name of job |
| | | |title of |
| | | |relevant |
| | | |PDMR) |
+–+———————-+———–+——–+————+—–+
| |President, North |N/A |
| |America | |
+–+———————-+———–+——–+————+—–+
|b)|Initial |Initial notification |
| |notification/Amendment| |
+–+———————-+———–+——–+————+—–+
|3 |Details of the issuer |
+–+———————-+———–+——–+————+—–+
|a)|Name |Keller Group plc |
+–+———————-+———–+——–+————+—–+
|b)|LEI and classification|549300QO4MBL43UHSN10 |
| | | |
| | |2.2 Inside |
| | |information |
+–+———————-+———–+——–+————+—–+
|4 |Details of the |
| |transaction(s): |
| |section to be |
| |repeated for (i) each |
| |type of instrument; |
| |(ii) each type of |
| |transaction; (iii) |
| |each |
| |date; and (iv) each |
| |place where |
| |transactions |
| |have been conducted |
+–+———————-+———–+——–+————+—–+
|a)|Description of the |Ordinary shares of |
| |financial instrument |10p each |
| | |GB0004866223 |
| |Identification code | |
+–+———————-+———–+——–+————+—–+
|b)|Indicate nature of the|Acquisition|Disposal|Subscription|Other|
| |transaction | | | | |
+–+———————-+———–+——–+————+—–+
| |ii) Is the transaction|Yes |No |
| |linked to an exercise | | |
| |of a share award? | | |
+–+———————-+———–+——–+————+—–+
| | |X |
+–+———————-+———–+——–+————+—–+
| |iii) Was the |Yes |No |If yes, |
| |transaction conducted | | |provide date |
| |pursuant | | |at which |
| |to an investment | | |investment |
| |programme or a trading| | |programme or |
| |plan? | | |trading plan |
| | | | |was entered |
| | | | |into: |
+–+———————-+———–+——–+————+—–+
| | |X | |
+–+———————-+———–+——–+————+—–+
|c)|Price(s) and volume(s)|Price(s) |Volume(s) |
| | | | |
| | |(Please state | |
| | |currency) | |
+–+———————-+———–+——–+————+—–+
| |GBP 21.69 |6,812 |
+–+———————-+———–+——–+————+—–+
|d)|Aggregated information|Aggregated price(s) |Aggregated |
| | |(Please state |volume(s) |
| | |currency) | |
+–+———————-+———–+——–+————+—–+
| |Not applicable – |Not |
| |single transaction |applicable |
| | |- single |
| | |transaction |
+–+———————-+———–+——–+————+—–+
|e)|Date of the |Date: 04.03.2026 |
| |transaction | |
| | |Time zone: GMT |
+–+———————-+———–+——–+————+—–+
|f)|Place of the |London Stock |
| |transaction |Exchange |
+–+———————-+———–+——–+————+—–+

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