16 April 2015

Impax Asset Management Group plc

Date of Interim Results Announcement

Impax Asset Management Group plc today announces that it intends to release its interim results for the six month period ended 31 March 2015 on Tuesday 19 May 2015.

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Ian Simm                                                                                           Tel: + 44 (0) 20 7434 1122 (switchboard)

Chief Executive

Impax Asset Management Group plc

Norfolk House, 31 St James's Square,                                          

London, SW1Y 4JR                                                                            

www.impaxam.com

Anne Gilding                                                                                      Tel: +44 (0) 20 7434 1122 (switchboard)

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

Impax Asset Management Group plc                                              Tel: +44 (0) 7881 249612 (mobile)

Norfolk House, 31 St James's Square,                                          

London, SW1Y 4JR                                                                           Email: a.gilding@impaxam.com

www.impaxam.com

Guy Wiehahn                                                                                     Tel: +44 (0) 20 7418 8900
Nominated Adviser and Broker
Peel Hunt LLP