Impax Asset Management Regulatory News (IEM)

Impax Environmental Markets PLC

LEI: 213800RAR6ZDJLZDND86

Transaction in Own Shares

In accordance with the Financial Conduct Authority's ('FCA') Disclosure Guidance and Transparency Rules, the Company announces that it has today purchased 210,594 of its own ordinary shares of 10p each at a price of 410.59p per share. These shares will be held in Treasury.

Following the transaction, the Company's share capital comprises:

Total issued share capital: 305,623,539

Shares held in Treasury (with no voting rights): 111,976,329

Total voting rights: 193,647,210

The total voting rights figure of 193,647,210 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 further information, please contact:

Juniper Partners Limited

Company Secretary

email:cosec@junipartners.com

Telephone: 0131 378 0500

31 October 2025