Impax Asset Management Regulatory News (IEM)

Impax Environmental Markets plc

(the "Company")

LEI: 213800RAR6ZDJLZDND86

TOTAL VOTING RIGHTS AND CAPITAL

In accordance with the Disclosure Guidance and Transparency Rules, the Company announces that as at 31 May 2023, the issued share capital of the Company consisted of 305,623,539 Ordinary Shares of 1p each, of which 3,856,500 Ordinary shares were held in Treasury and 301,767,039 Ordinary shares were in circulation.

Therefore, the total number of voting rights in the Company is 301,767,039 (the 'Figure').

The Figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in the Company under the FCA's Disclosure Guidance and Transparency Rules.

For the purposes of the Transparency Directive the Company's Home Member State is the United Kingdom.

Enquiries:

Apex Listed Companies Services (UK) Limited

Company Secretary

Tel: 020 3327 9720

1 June 2023