Board of Directors

Lisa Woll, CEO

As our CEO, Lisa Woll leads US SIF and the US SIF Foundation's overall direction and sits, ex-officio, on all board committees and is a non-voting member of the board.

Lisa has been the CEO since 2006, and has been responsible for strategic planning, developing a robust policy presence, expansion and diversification of funding, launching our national conference and creating the Center for Sustainable Investment Education.  For more information about Lisa Woll, click

Diederik Timmer, Chair

Diederik Timmer is the Executive Vice President of Institutional Relations at Sustainalytics. Over the past decade, Diederik has helped build Sustainalytics into the largest independent provider of ESG research and analysis for the global investment community. He acts as an advisor to senior executives, portfolio managers, and risk professionals on developing and implementing ESG, SRI and Impact strategies. Diederik directly manages the Institutional Relations team, whose members earned the top three positions in the Independent Research in Responsible Investment (IRRI) Survey for Best SRI Client Services representatives in 2012. 

Prior to joining Sustainalytics, he managed research projects at Nyenrode University in The Netherlands, where he contributed to multiple academic publications. He's married to his long-term partner Sarah, has a 7-year-old son named Hugo and lives in Brooklyn, NY.

Iyassu Essayas, Vice-Chair

Iyassu Essayas is the Director of ESG Research at Parnassus Investments. He is responsible for oversight of the development and implementation of Parnassus’s responsible investment policy as well as the integration of environmental, social, and governance research into the firm's investment process. Iyassu has spent over a decade representing Parnassus Investments in company engagements, public events and with clients.
Iyassu joined Parnassus Investments in 2010 after serving as a Parnassus research intern. He received his bachelor's degree in biology from the University of San Francisco.

Kimberly Gluck, Treasurer

Kim is a Managing Director and a member of the Boston Trust Walden Board of Directors and manages portfolios for institutional and individual clients. She is a member of the Securities Research, Corporate Governance, and ESG Research & Engagement Committees.

Prior to joining the firm in 2011, Kim was a Managing Director at Atlantic Trust and a Senior Relationship Manager and Portfolio Manager for six years, primarily serving high net worth clients. Previously, she worked with State Street Global Advisors as a Portfolio Manager and Product Engineer for over ten years and helped to establish their socially responsible investment (SRI) program.

Kim earned a BA in Economics from Middlebury College. She holds the Chartered Financial Analyst® designation and is a member of the CFA Society Boston and the CFA Institute. She currently serves on boards and committees for the United Methodist Foundation of New England, the Second Church of Newton, and The Boston Club. She is also a member of the Women Donors Network.

Jonas Kron, Secretary

Jonas Kron is Trillium Asset Management’s Director of Shareholder Advocacy. With almost 20 years of experience in shareholder advocacy, Jonas is responsible for leading and coordinating Trillium’s extensive advocacy program, which works to engage companies on their environmental and social performance. His advocacy work includes direct communications with company leadership, investor education and awareness, filing shareholder proposals, and public policy advocacy at the municipal, state and federal levels. As a recognized legal expert in the field and a leader in shareholder advocacy, Jonas regularly represents Trillium in the media, at public events, and with clients.

Prior to joining Trillium, Jonas was an environmental attorney and public defender as well as outside counsel to many socially responsible investment organizations. Jonas holds J.D. and masters degrees from Vermont Law School.

Anthony Eames, At-Large Member

Anthony serves as Vice President and Director of Responsible Investment Strategy for Calvert Research and Management, an affiliate of Eaton Vance. For 25 years, his career has centered on providing education, insights and portfolio positioning to investment professionals and clients about the benefits of sustainable and responsible investing. 
Anthony led the business development and client service efforts of Calvert ahead of the 2016 acquisition of Calvert Investment Management’s assets by Eaton Vance. He developed the transition strategy to EV, carrying forward the history of Calvert’s responsible investment research and engagement process, building and integrating a new strategic vision, and developing and growing the specialist and product management team. He is responsible for client communications and insights on investment strategy and portfolio positioning. He is also a director of the Calvert Institute for Responsible Investing, Calvert Research and Management’s research and innovation arm, and is often called upon as a subject matter expert for stage and media appearances.
A graduate of Wittenberg University, Anthony is also an Accredited Investment Fiduciary (AIF), Accredited Asset Management Specialist (AAMS), and Global Financial Steward (GFS), and holds FINRA Series 7, 24, and 63 licenses.

Steve Falci, At-Large Member

Steve Falci is the Chief Investment Officer at Impax Asset Management. There, he oversees the investment management of Pax World Funds and the collaboration between investment analysis and environmental, social and governance research to enhance the firm’s sustainable investing strategy.
Steve has 30 years of experience in financial services. Prior to joining Impax, he served as Head of Strategy Development, Sustainable Investment at Kleinwort Benson Investors, where his duties included strategic direction, product development and identifying new market opportunities in the sustainable investment business. Steve previously served as Chief Investment Officer at Equities at Calvert Group, and was a Principal and Senior Portfolio Manager at Mellon Equity Associates. Steve currently serves on the Investment Committee of Mercy Investment Services.
Over the course of his investment career, Steve completed a seminary degree and has been involved in campus ministry at a large university and in Jesuit ministries in the US and Dublin. Steve has a Bachelor’s of Science in Economics and a Master’s of Business Administration from the Stern School of Business at New York University and a Master’s of Arts from Pittsburgh Theological Seminary. He is a CFA® charter holder.

Amberjae Freeman, At-Large Member

Amberjae Freeman is currently the Chief Executive Officer at Etho Capital, a sustainable investment fintech company. At Etho Capital she works with the executive team and board to shape and execute on the company’s vision. She is also responsible for developing Etho’s strategy. Previously, she served as Portfolio Manager and Impact Researcher at Swell Investing and as principal analyst for the SRI Wealth Management Group at RBC, where she provided proprietary ESG and impact research for clients representing $2 billion in assets under management.
Her foray into sustainable finance began more than 10 years ago in graduate school when she received dual fellowships with the Clinton Global Initiative in New York City and the Clinton Hunter Development Initiative in Kigali, Rwanda. In Kigali, she determined the financial viability of farmer participation in projects funded under the Clean Development Mechanism and reviewed business plans for agricultural industrialization schemes. Amberjae has also served as an adjunct professor of Political Science and Economics at Santa Barbara City College and coordinated country-specific research for asylum cases at the Center for Gender & Refugee Studies at the University of California, Hastings College of the Law.
Amberjae holds a bachelor’s degree and an MA in Global & International Studies from the University of California, Santa Barbara.

Kimberly Griego-Kiel, At-Large Member

Kim is the CEO of Horizons Sustainable Financial Services, Inc., a majority woman owned RIA firm in Santa Fe, NM. She has been working directly with clients for over 20 years in the Impact Investing space, which includes; individuals, small businesses, and local non-profits.

In her capacity as the majority owner and CEO, she not only work with clients directly, but is the Chief Compliance Officer, overseeing a small but mighty team of Advisors from around the country. She has a twice-monthly Podcast, Deep Impact Investing, as well as the occasional contribution into the asset management of client accounts. She speaks on a variety of topics at both in-person and now virtual events across the country. She has a great team and they have managed to grow the firm’s assets by nearly 500% since 2008. She is strongly committed to the goals of impact investing in all client portfolios.

Ebony Perkins, At-Large Member

Ebony Perkins is a dedicated, solution-oriented social entrepreneur whose heartbeat is community. She has a demonstrated ability of working with investors and philanthropists to help them make smart and strategic decisions. As the Vice-President & Director of Investor Relations at Self-Help Credit Union, Ebony manages a 7-person team that helps groups and individuals invest funds in a socially responsible financial institution that supports communities of all kinds, especially those underserved by conventional lenders. In this role, Ebony has secured over $100 million in investments from individuals and organizations to help them align their values and finances.
Before that role, she served as the Donor Relations Manager at Central Carolina Community Foundation where she managed a system to engage and educate over 400 individuals and groups to help them achieve their charitable goals.
Ebony’s commitment to community investing is evident by her service and contributions to Women In Philanthropy, Financial Planning Association, Durham Center for Senior Life, and the University of North Carolina MPA Alumni Board. Ebony was also recognized on the SRI Conference's inaugural 30 Under 30 List.
Ebony holds a Master of Public Administration from the University of North Carolina at Chapel Hill and a Bachelor of Science in Marketing from Claflin University as a summa cum laude graduate. She also has an Executive Certificate in Financial Planning from Duke University.

Stephanie Cohn Rupp, At-Large Member

Stephanie Cohn Rupp is a Partner and Chief Executive Officer of Veris Wealth Partners, a leading impact and ESG-only wealth management firm in the United States. She is an executive leader with more than 20 years of global impact investing experience. During her career, Stephanie has focused on building scalable, profitable, sustainable businesses. Based in San Francisco, she helps lead the firm’s impact wealth management growth strategies, financial performance and client experience.

Before joining Veris, Stephanie was Managing Director and Partner, Head of Impact Investing, at Tiedemann Advisors and Threshold Group, where she served clients as a wealth advisor and led the development of the impact investing platform and impact client experience. Prior to that, she was CEO of Toniic, a global community of impact investors which she grew tenfold. Previously, Stephanie held globally focused investment roles at Omidyar Network, PlaNet Finance, UBS, The World Bank and building greenfield micro-finance institutions financed by USAID.

Stephanie is a member of the ImpactAssets 50 Review Committee, Confluence membership committee and an advisory board member to Paris-based Investisseurs et Partenaires’ investment fund for education in Francophone Africa.
She earned a Master of Public Administration from the Harvard University Kennedy School of Government and a Master of Science from the London School of Economics and Political Science. She is a French and U.S. binational and co-authored The ImpactAssets Handbook with Jed Emerson.

Leslie Samuelrich, At-Large Member

Leslie Samuelrich leads Green Century Capital Management as President, focusing on the firm’s current and emerging investment strategies, business development, and impact investing program. She is a frequent speaker on fossil fuel free investing and impact investing and serves as the firm’s primary media spokesperson. Prior to joining Green Century, Leslie served as the Chief of Staff at Corporate Accountability International and Executive Director of Green Corps, leading significant expansion campaigns.

Leslie currently serves on the boa
rd of Voices for Progress, and as an Advisory Board member at the Business Ethics Network, and the Intentional Endowments Network. She earned a BA in economics from Boston College.

Mamadou-Abou Sarr, At-Large Member

Mamadou is the founder and President of V-Square Quantitative Management, a subsidiary of Valor Equity Partners. Mamadou founded V-Square Quantitative Management in 2020 after an accomplished career in asset management whilst working for global financial services company across the U.S., Europe, Middle East, and Africa. His investment firm specializes in financial engineering, development and management of quantitative portfolios and processing of sustainability big data.
An industry leader in the field of sustainable investing and financial innovation, Mamadou’s previous role was global head of product development and sustainable investing at Northern Trust Asset Management in Chicago, where he was responsible for driving innovation and product development across asset classes. Mamadou spearheaded, developed, and led one of the largest sustainable investing platforms in the industry.
He has published many articles and papers in professional and academic journals including Pensions & Investments, European Pensions, Environmental Finance, and the Journal of Portfolio Management. Mamadou has also spoken at more than 150 conferences in North America, Europe, Asia, Middle East and Australia and is an Adjunct Faculty member for ESG Investing at the Baumhart Center MBA, and a guest lecturer on sustainability at University of Chicago, Wharton and ESCP Business School.
Mamadou is actively involved in philanthropic and civic activities. He is a board member of the Nature Conservancy Illinois Chapter, a member Rush Health Equity Advisory Council (Rush Hospital) and a member of the committee on Photography at the Art Institute of Chicago. He also serves at the ESCP business school Research Center for Energy Management (Member of the Advisory Board); French American Cultural Exchange (FACE -Founding member of FACE in Chicago) and a member of various committees of the Principles for Responsible Investment (PRI).
In 2014 he was named in the Financial News “Top 40 under 40 Rising Stars in Asset Management” in Europe, Middle East, and Africa. In 2017, Mamadou was named a “40 under 40” by Crain’s Chicago Business. In 2017 he was also recognized in Top 50 Individuals who contribute the most sustainable & responsible investment industry in the world (IRRI). He is a fellow of Leadership Greater Chicago since 2019, a member of the Economic Club of Chicago and an Executive Fellow of the Baumhart Center.
Mamadou is a French Foreign Trade Advisor, appointed by decree of the Prime Minister of France.