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Sally Bridgeland

Chair

Sally joined the board as a Non-Executive Director in July 2015 and was appointed Chair in December 2020. Sally is a member of the Remuneration Committee.

She is currently a non-executive director of Royal London, Pension Insurance Corporation plc and Royal & Sun Alliance Insurance Limited, having worked in the UK pensions industry for 30 years.

Originally qualifying as a Fellow of the Institute of Actuaries with consultants Bacon & Woodrow (now Aon), she was CEO of the BP Pension Fund from 2007-2014. Sally held a number of voluntary roles with the actuarial profession and was the first lady Master of the Worshipful Company of Actuaries 2016-17.

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

Recent Insights

Arnaud de Servigny

Non-Executive Director

Arnaud joined the board as a Non-Executive Director in June 2018.

He currently holds a non-executive directorship at BNP Paribas Asset Management France and is President of Queens Field SAS. He was previously a Managing Director at Deutsche Bank Asset Management and has also worked at Barclays Wealth, Standard & Poors and BIM private equity fund. Arnaud has been a visiting Adjunct/ Professor of Finance at Imperial College Business School since 2005 and is the author of several books on finance, economics and investment management.

Julia Bond

Non-Executive Director

Julia joined the Board as a Non-Executive Director in November 2023 and is a member of the Company’s Audit & Risk and Remuneration Committees.

Julia has deep experience of capital markets in the financial services sector. She is a former Managing Director at Credit Suisse where she led the Central Bank and Sovereign Wealth Fund teams globally as well as co-heading Non-Japan Asia Fixed Income Sales. Julia serves as a Non-Executive Director to several private and public sector organisations, including UK Strategic Command, the British Foreign and Commonwealth Development Office, International Public Partnerships, and European Assets Trust plc.

Lindsey Brace Martinez

Non-Executive Director

Lindsey joined the Board as a Non-Executive Director in July 2015 and is a member of the Remuneration Committee, which she also Chairs, and the Audit and Risk Committee. Lindsey is the Board sponsor for Equity, Diversity & Inclusion.

Lindsey served as a member of the Executive team and was a Managing Director at Cambridge Associates. She held multiple roles during her 15-year tenure at the firm including Global Head of several areas covering Client Service and Relations, Business Development and Client Relationship Management, and Consulting.

She is the Founder and CEO, StarPoint Advisors, LLC; Co-Chair of the Advisory Board for the Center for Business and Environment at Yale (CBEY);  Chair, People and Culture Committee, Onward Energy; Trustee, Impax Funds; and Board member, Seven Islands Lands Company.

Lindsey holds an MBA (finance and strategy) and a Master of Environmental Studies from Yale University and a Bachelor of Arts from Dartmouth College.

She has 30 years’ experience in investment advisory, natural resources portfolio management, institutional marketing and sales, and management consultancy.

Simon O’Regan

Non-Executive Director

Simon joined the board as a Non-Executive Director in December 2020 and is a member of the company’s Audit & Risk and Remuneration Committees and the Senior Independent Director.

Simon has forty years’ experience in the insurance, pensions and asset management industries. He is a UK qualified actuary by training and has lived and worked in six countries around the world including as CEO of Mercer in Australia, in the UK, in Europe and in the USA/ Canada. He was a member of the UK’s Nuclear Liabilities Financing Assurance Board until it submitted its final advice on Hinkley Point in 2015 and served as a Non-Executive Member of the Foreign, Commonwealth and Development Office’s Audit & Risk Assurance Committee. He was formerly a Non-Executive Director of Alexander Forbes Group Holdings Ltd and Mercer Africa Limited.

Annette Wilson

Non-Executive Director

Annette joined our board in June 2022 and is a member of the Audit & Risk Committee, which she chairs, and the Remuneration Committee.

With more than 20 years’ experience in the private equity and venture capital sectors, Annette brings with her a wealth of experience from her previous roles as Partner and COO of Finch Capital, and as founding CFO of Palamon Capital Partners, a European growth investor. Annette also worked in the insurance industry for FTSE 100-listed company, Sedgwick, an insurance broker, and as Chief Financial Officer for LSE-listed Windsor. She started her career at PricewaterhouseCoopers.

Annette is a graduate of the University of Johannesburg. She is a Fellow of the Institute of Chartered Accountants in England and Wales and a member of the South African Institute of Chartered Accountants. She serves as a non-executive director and adviser to several international companies, and is also founder and Chair of the Board of Trustees of ADHD Embrace, a UK-registered charity.

Catherine Bremner

Chief Strategy Officer

Catherine is Impax’s Chief Strategy Officer. She is responsible for line managing Impax Asset Management’s risk and compliance functions, as well as strategic projects working with the CEO. Catherine is also responsible for coordinating the build-out of Impax’s digital strategy, inclusive of our data architecture and AI capability. With over 25 years of experience in sustainable development, finance, strategy and change management, she is also a highly respected leader in green finance.

Before joining Impax in 2021, Catherine spent five years at the UK Government’s Department for Business, Energy & Industrial Strategy, including acting as Director General, responsible for around 500 staff tasked with developing the UK’s Net Zero Strategy and International Climate and Energy policy. She also chaired the UK Government’s Climate and Energy G7 Presidency in 2022. Before this, she was Global Head of Environmental Sustainability at Australian financial services firm ANZ. She was also Chief Operating Officer at Low Carbon Australia and Head of International Development at the Carbon Trust.

Outside of Impax, Catherine is on the Board of the Met Office and is the Chair of its Remuneration Committee.      

Catherine holds a Master’s degree in Public Policy from the London School of Economics, a master’s degree in Environmental Science and Management from Oxford University and a bachelor’ degree (Hons 1st) in Chemical Engineering from The University of Queensland.

Karen Cockburn

Chief Financial Officer

Karen Cockburn is Impax’s Chief Financial Officer. She is responsible for overseeing Impax’s Finance, Investor Relations, People and Legal functions, as well as Governance processes. As a member of Impax’s Management Committee, she contributes to the Firm’s commercial and strategic business matters. Karen is also an Executive Director on the Board of Impax Asset Management Group plc.

Karen is a qualified Chartered Accountant with over 25 years’ financial and operational experience in financial services. Before joining Impax in 2022 Karen was transformation CFO at Virgin Money plc, focused on the integration of Virgin Money and Clydesdale Banking Group. Prior to that she spent nine years at Aegon in various strategy, transformation and finance leadership roles, laterally as Chief Financial Officer of Cofunds. Having qualified with KPMG, she spent her early career with GE Capital, a global financial service provider, and Lloyds Banking Group. Karen is also a founder and board member of a digital start up, Legado Technologies Ltd.

Karen is a fellow of the Irish Institute of Chartered Accountants and holds a BSc and MSc in Finance /Accounting from Queen’s University, Belfast.

Ed Farrington

President, North America

Ed is President, North America at Impax Asset Management. Based in the Portsmouth office, Ed is responsible for distribution of Impax’s full capabilities across North America. Ed previously served as the Head of Distribution for North America. In this capacity, he oversaw institutional and intermediary sales and client service efforts, engaging with consultants, advisers, institutions and plan sponsors on issues ranging from investing in the transition to a more sustainable economy to navigating global retirement systems.

Ed joined Impax in 2021 from Natixis Investment Managers where he held multiple distribution leadership roles in London and Boston over the span of 12 years. Prior to that, he worked in sales and sales management for Fidelity Investments, Fidelity Charitable Services and Pioneer Investments.

With a bachelor’s degree in political science from the University of New Hampshire, Ed also holds the FINRA Series 6, 7, 24, and 31 registrations, and is a registered representative of Foreside Financial Services, LLC. He serves on the World Surf League advisory board, the Levitate Foundation and the sustainability advisory board at the University of New Hampshire.

Recent Insights

Bruce Jenkyn-Jones

Chief Investment Officer (CIO), Listed Investments

Bruce serves as Impax’s Chief Investment Officer, Listed Investments. Bruce is one of Impax Asset Management’s longest-serving employees. He developed the firm’s listed equities business and the division’s investment thesis. He is responsible for overseeing and enhancing all aspects of the listed investments business, including monitoring performance, ensuring regulatory compliance, and spearheading product design. Bruce is a co-Portfolio Manager of the Impax Specialists and Climate strategies.


Before joining Impax in 1999, Bruce worked as a utilities analyst at Bankers Trust and as an environmental consultant for Environmental Resources Management.

An Oxford graduate with a bachelor’s degree in Chemistry, Bruce also holds a master’s in Environmental Engineering Technology, and an MBA from IESE Business School in Barcelona.

Authored Insights

Darren Johnson

Global Chief Operating Officer

Darren Johnson is Impax’s Chief Operating Officer. He sits on our Management Committee and is responsible for operations throughout the organisation. He has held this role since joining in 2007 and in that time has driven operational transformation, built teams and pioneered the company’s transition into cloud services to support rapid growth.

Prior to Impax, Darren held a similar role for family office Talisman Global Asset Management and his previous experience has included roles at RAB Capital, AXA Investment Managers, and Legal & General.

Darren sits on the board of several charities and organisations, including St Mungo’s, the UK’s largest homeless charity, and the investment advisory board of Comic Relief. He is a prominent advocate of diversity issues across financial services, is co-founder of TalkAboutBlack, sits on the CIC board of the Diversity Project, which aims to accelerate progress towards an inclusive culture in the investment and savings industry, and is on the Standing Committee for Investment 20/20, an organisation providing school leavers and graduates from non-traditional backgrounds with opportunities in asset management.

Daniel von Preyss

Head of PE/Infrastructure

Daniel joined Impax in 2009 and heads Impax’s Private Equity/Infrastructure business. Daniel is a member of the investment committees for each of the New Energy Funds.

Daniel has significant business and senior transactional experience with blue chip companies within the energy and utility sectors. Prior to joining Impax he was responsible for Babcock & Brown’s Northern European infrastructure investment activities. Prior to this, Daniel was Director in the European Energy and Utilities team at Deutsche Bank with a strong focus on M&A activity in Europe and a member of Citigroup’s Utilities team.

Daniel holds an MBA from Cologne University (Germany) and studied International Business for one year under a scholarship at Sophia University in Japan

Paul Voûte

Head of Distribution, Europe & Asia-Pacific

Paul is Head of Distribution for Europe & Asia-Pacific. He oversees Impax Asset Management’s distribution efforts in several key markets, taking a leading role in managing business development, consultant relations and RFPs. He has worked in this function since joining the firm in 2022.

Before joining Impax, Paul held a similar role at Federated Hermes and, before its takeover, Hermes Investment Management. With a career starting in 1997, Paul has worked in distribution and business development throughout his career in asset management with spells at GE Asset Management and Neuberger Berman.

Paul holds a bachelor’s degree in Business Studies from ESC Bordeaux and ISER Rotterdam. He is fluent in English, French and Dutch.

Zack Wilson

Group General Counsel

Zack serves as Group General Counsel for Impax Asset Management Group plc and is also Company Secretary. Prior to joining Impax in 2011, Zack was Director & General Counsel for the investment management and corporate finance advisory group Development Capital Management.

Previously he was Corporate Counsel for Telewest Global Inc (renamed Virgin Media Inc), where he played a leading role in managing the successful execution of high-profile transactions including the Group’s US$10bn financial restructuring. Zack qualified as a solicitor at the global law firm Norton Rose, specialising in Corporate Finance.

He holds a Master of Arts in Jurisprudence from Oxford University.


John L. Liechty

Chairman of the Board, Impax Funds

John has been an Independent Trustee since 2009 and is a member of the governance and compliance committee.

John is founder and principal of Integrated Financial Planning Solutions, a fee-only financial planning firm in Goshen, Indiana. Previously he served as senior vice president of financial services and president of Praxis Mutual Funds, and he held senior roles at the life insurance company Everence.

John serves on the boards of MEA and the Community Foundation of Elkhart County. Previously, he served on the boards of US SIF, Meritas Mutual Funds and several regional nonprofits. 

John earned a Bachelor of Arts in business administration and religion from Bluffton University. He is a Chartered Financial Consultant, a Chartered Life Underwriter and holds the FINRA Series 65.

Gregory D. Sheehan

Independent Trustee, Impax Funds

Greg has been an Independent Trustee since January 2023.

Greg has substantial experience in the asset management industry, having represented mutual funds, independent directors and asset management firms during his 40-year career at Ropes & Gray LLP. He held various leadership positions at the firm, including as a member of the management committee and chair of the investment management group. For approximately 15 years, until his retirement in 2020, Greg led Ropes & Gray’s representation of the Impax Funds and their independent trustees. He is currently an Adjunct Professor at the Boston College Law School, having created a course dedicated to Asset Management Law and Regulation.

Greg received an A.B., magna cum laude, from Harvard College and a J.D. from the UC Berkeley School of Law, where he was executive editor of the California Law Review. He has earned several awards, including The Best Lawyers in America and “Independent Director Counsel of the Year” for the work he did for the Impax Funds Trustees.

Nancy S. Taylor

Independent Trustee, Impax Funds

Nancy has served as independent trustee since 2006 and is chair of the governance committee.

She is the twentieth senior minister and CEO of Old South Church in Boston, founded in 1669. Nancy has received several awards and honors for her ministry, including the Emma Willard School’s Distinguished Alumni Award; the Yale Divinity School’s award for Distinction in Congregational Ministry; the Religious Coalition for the Freedom to Marry Building Bridges Award, and the Hewlett Packard Award for Distinguished Leadership in Human Rights.

Nancy co-chairs the Dean’s Advisory Council at Yale Divinity School, and she serves on the advisory boards of both Hebrew College’s Miller Center for Interreligious Life and Boston College’s Center for Religion in American Public Life.

Adrian P. Anderson

Independent Trustee, Impax Funds

Adrian has served as an Independent Trustee since 2007 and is currently chair of the audit committee.

Since the late 1970s, Adrian has held several roles in the financial services industry, including portfolio manager, investment consultant, executive director and CEO. Today he is a tax accountant with Shwiff, Levy & Polo in San Francisco.

Adrian earned a Bachelor of Science in accounting from Virginia Commonwealth University and a Juris Doctor from the Antonin Scalia School of Law at George Mason University.

Adrian supports Girl Scouts and the United Nations Children’s Fund. He is founder of a charity golf tournament that has raised more than a half million dollars in scholarship funds for needy students over the past 12 years.

D’Anne Hurd

Independent Trustee, Impax Funds

D’Anne has been an Independent Trustee since 2015 and is a member of the audit committee.

She is the audit committee’s qualified financial expert and sustainability/ESG authority and a former senior financial management executive for two Fortune 100 companies.

D’Anne has served on the boards of four public companies and six private company boards across several industries, including retail, medical devices, technology and financial services. She is a senior faculty member of the National Association of Corporate Directors’ In-Boardroom Services practice.

D’Anne earned a Juris Doctor in corporate and securities law from Duke University School of Law, an MBA in finance from the University of Connecticut and a Bachelor of Arts from Mount Holyoke College.