Director’s Dealing

15 February 2013

Impax Asset Management Group plc ("Impax" or the "Company")

Director's Dealing

The Company received notification today that Mark White, Non -Executive Director of the Company, has acquired 90,000 ordinary shares of 1 pence each at a price of 42.5 pence per share.

Enquiries:

Impax Asset Management Group plc                     020 7434 1122

Ian Simm, Chief Executive

Espirito Santo Investment Bank                                                020 7456 9191

John Riddell