Transaction in Own Shares

10 June 2013

Impax Asset Management Group plc

Transactions in Shares by EBT

Impax Asset Management Group plc (the "Company") announces that Sanne Trust Company Limited, as trustees of the Impax Asset Management Group plc Employee Benefit Trust 2012 (the "EBT"), purchased 150,000 ordinary shares of 1 pence each in the capital of the Company ("Shares") at a price of 36 pence per Share on 5 June 2013 and 100,000 Shares at a price of 36 pence per share on 7 June 2013.

Following these purchases, the EBT holds 15,834,143 Shares, representing 12.39% of the Company's current voting rights.

Enquiries: 

Impax Asset Management Group plc

Ian Simm, Chief Executive                                       020 7434 1122              

Anne Gilding Head of Brand Communications     Tel: +44 (0) 20 7432 2602

                                                                                                Mobile: +44 (0) 7881 249612 (mobile)

                                                                                                Email: a.gilding@impaxam.com

                                                                                                www.impaxam.com

  Execution Noble

  John Riddell, Director                                                   020 7456 9191