Ian Simm

Founder & CEO

Ian Simm is the 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. Prior to Impax, Ian was an engagement manager at McKinsey & Company advising clients on environmental strategy.

Outside Impax, Ian is a member of the UK government’s Net Zero Innovation Board, which provides strategic oversight of public sector funding of energy innovation programmes, and is a board member of the Institutional Investors Group on Climate Change, the European membership body for investor collaboration on addressing climate change. He is also a commissioner with the Energy Transitions Commission, a global coalition of leaders developing transition roadmaps to achieve net-zero emissions. Between 2013 and 2018, he was a board member of the Natural Environment Research Council (NERC), the UK’s leading funding agency for environmental science. He supports charities in the clean energy, healthcare and a range of scientific and environmental sectors. 

Ian has a first-class honours degree in physics from Cambridge University and a Master’s in Public Administration from Harvard University. In the last century he initiated and led an expedition to complete the first summer crossing of the Sahara Desert by tandem bicycle.

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Joseph Keefe

President

Joe is President of Impax Asset Management LLC, the North American division of Impax Asset Management Group and investment adviser to Pax World Funds. Based in the Portsmouth office, he is responsible for US managed strategies as well as distribution of Impax’s full capabilities across North America.

Prior to joining the firm in May 2005, Joe was President of NewCircle Communications, a strategic consulting and communications firm specializing in corporate social responsibility and public policy communications. He served as Senior Advisor for Strategic Social Policy at Calvert Group from 2003-2005 and as Executive Vice President and General Counsel of Citizens Advisers from 1997-2000. He is a former member of the Board of Directors (2000-2006) of US SIF, the trade association representing asset managers and investors engaged in sustainable investing throughout the United States. Before entering the investment management industry, Joe worked in private law practice for 16 years.

Joe holds a Juris Doctor from the University of Virginia School of Law and a Bachelor of Arts in philosophy from the College of the Holy Cross.

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