Block listing Interim Review

Name of applicant:

Pennon Group plc

Name of scheme:

Pennon Group Sharesave Scheme

Period of return:

From:

01/02/25

To:

31/07/25

Balance of unallotted securities under scheme(s) from previous return:

1,217,385

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see UKLR 20.6.7G):

22,617

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

1,194,768

Name of applicant:

Pennon Group plc

Name of scheme:

Pennon Group Executive Share Option Scheme

Period of return:

From:

01/02/25

To:

31/07/25

Balance of unallotted securities under scheme(s) from previous return:

9,775

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see UKLR 20.6.7G):

Nil

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

9,775

Name of contact:

A Garard - Group General Counsel and Company Secretary

Telephone number of contact:

01392 443702