The Directory

Ian Simm

Ian Simm

Impax Asset Management
Founder & CEO


Founder and Chief Executive of Impax Asset Management Group plc, one of the world’s leading investment managers dedicated to investing in the transition to a more sustainable economy.

Ian R. Simm is a Chief Executive, Executive Director of the Company. Ian is the Founder and Chief Executive of Impax Asset Management Group plc. Ian has been responsible for building the company since its launch in 1998, and continues to head the Listed Equities and Real Assets investment committees. Prior to Impax, Ian was an engagement manager at McKinsey & Company advising clients on environmental strategy. Between 2013 and 2018 Ian was also a member of the Natural Environment Research Council (NERC), the UK’s leading funding agency for environmental science; he is currently a member of the Steering Committee of the UK’s Green Finance Institute. Ian has a first-class honours degree in physics from Cambridge University and a Master’s in Public Administration from Harvard University.

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