Impax Asset Management Regulatory News (IPX)

Impax Asset Management Group plc - trading update

London, 10 October 2014 - Impax Asset Management Group plc ("Impax" or the "Company"), the AIM quoted investment manager focused on environmental markets and related resource efficiency sectors, today reports a trading update ahead of the announcement of its final results for the year ending 30 September 2014 (the "Period"), expected on 27 November 2014.

Assets under management and advisory ("AUM") were £2,755 million on 30 September 2014, a 25% increase on 30 September 2013 (£2,197 million). Further details are set out in the table below. The Board expects the Company's operating earnings1 to be marginally ahead of market expectations.

Net inflows for the Period were £489 million. We have continued to see strong flows into our third party listed equity funds and accounts, particularly from clients based in the United States and continental Europe. Growth of the Company's US business has been particularly encouraging and our mandate pipeline remains promising.

Ian Simm, Chief Executive of Impax, commented:

"It is pleasing to report strong AUM growth for the year and sustained interest from investors in opportunities linked to resource efficiency, particularly in the United States, where prolonged drought and climate change have recently become investment issues for many. With a growing product range, extensive track record and broad distribution capabilities, Impax is well positioned for further profitable expansion."

1Revenue less operating costs.

Enquiries:

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

Chief Executive

Impax Asset Management Group plc

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)

www.impaxam.com Email: a.gilding@impaxam.com

Guy Wiehahn Tel: +44 (0) 20 7418 8893Nominated AdviserPeel Hunt LLP

Notes to Editors - About Impax Asset Management

Founded in 1998, Impax Asset Management is dedicated to investing in resource efficiency and environmental markets created by resource scarcity and the demand for cleaner, more efficient products and services. Impax, which employs 28 investment professionals and a similar number of support staff, has offices in London, Hong Kong, New York and Portland (Oregon). The firm manages ca. £2.8 billion* for investors globally across listed and private markets strategies.

Impax's listed equity funds seek out mis-priced companies that are set to benefit from the long-term trends of changing demographics, urbanisation, rising consumption, and the resultant increases in resource scarcity. Investment is focused on a small number of deeply researched global equity strategies across alternative energy, energy efficiency, water, waste, and food and agriculture related markets.

The private equity infrastructure funds follow an operationally focused, value-add strategy, investing in renewable power generation and related assets throughout Europe.

The Impax Climate Property Fund focuses on developing sustainable and energy efficient commercial property, primarily in the UK.

*As of 30 September 2014

Issued in the UK by Impax Asset Management Group plc, whose shares are listed on the Alternative Market of the London Stock Exchange. Impax Asset Management Group plc is registered in England & Wales, number 03262305.

Performance relates to Impax Asset Management Limited and Impax Asset Management (AIFM) Limited. Both companies are authorised and regulated by the Financial Conduct Authority and are wholly owned subsidiaries of Impax Asset Management Group plc.

Please note that the information provided and links from it should not be relied upon for investment purposes. For further information please visit www.impaxam.com.