Directorate Change

12 June 2018

Impax Asset Management Group plc

Appointment and Resignation of Non-Executive Directors

Impax Asset Management Group plc (the "Company" or "Impax"), the AIM quoted specialist investor focused on a more sustainable global economy, today announces the appointment of Arnaud Jacques Marie Gilbert de Beauchef de Servigny as non-executive director with immediate effect. Guy de Froment, who has served on the Board since January 2008, is stepping down as a non-executive director with effect from today in order to fulfil other commitments. Guy was previously vice chairman of BNP Paribas Asset Management and joint CEO responsible for sales and marketing.

Mr de Servigny, age 54, is non-executive director of BNP Paribas Asset Management France and prior to that worked at Deutsche Bank, Barclays Wealth and Standard & Poor's. He will sit on the Company's Audit & Risk and Remuneration Committees.

During the last five years immediately preceding the date of this announcement, Mr de Servigny held the following directorships:

· BNP Paribas Asset Management France

· Fondation Pour l'Ecole

· Bramham Gardens Investments Limited

· Bramham Gardens SARL

· Camgestion - directorship ceased in 2017

There is no further information required to be disclosed pursuant to paragraph (g) of Schedule 2 of the AIM Rules.

Keith Falconer, Chairman said:

"On behalf of the Company I would like to thank Guy for his dedication and valuable contribution to the development of Impax's business during the last 10 years.

As we near our twentieth anniversary and seek to deliver the next phase of growth, Arnaud brings a wealth of experience to Impax. We are delighted to welcome him to the Board."

LEI number: 213800AJDNW4S2B7E680

-ENDS-

Enquiries:

Ian Simm

Chief Executive Tel: +44 (0) 20 3912 3000 (switchboard)

Impax Asset Management Group plc

7th floor, 30 Panton Street

London SW1Y 4AJ

www.impaxam.com

Gay Collins /Louis Supple Tel: +44 (0) 7798 626282 (mobile)

Montfort Communications Tel: +44 (0) 20 3770 7914 (direct)

Email: impax@montfort.london

Guy Wiehahn Tel: +44 (0) 20 7418 8893Nominated Adviser and BrokerPeel Hunt LLP