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.

Michael Kramer, Vice-Chair
Michael Kramer is a Managing Partner at Natural Investments, a federally-registered investment advisory firm exclusively dedicated to sustainable, responsible, and impact (SRI) investments since 1985 and the only SRI firm to have written three books on the field. He has been part of the SRI community for 27 years, teaching SRI through permaculture courses, becoming Natural Investments third advisor in 2000, and becoming a partner in the firm in 2007.
Michael is responsible for overseeing the operations, finances, and strategic direction of the firm and its 15 offices in 10 states. He manages shareholder and policy engagement for the firm, facilitates marketing and ESG research, oversees the NI Social Rating of SRI mutual funds (now in its 25th year), and serves on the firm’s investment committee. He has long been a voice for broader and deeper ESG standards within the SRI industry, regularly engaging money managers and institutions on how to improve their approaches to screening, advocacy, and community investing.
In 2015, Michael co-wrote “The Resilient Investor: A Plan for Your Life, Not Just Your Money," has been lecturing worldwide about SRI, resilience, and sustainability for many years. He has written articles and columns for in Green Money JournalYes!, and

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.

Andrew Behar, At-Large Member
Andrew Behar is currently the CEO of As You Sow, a nonprofit organization dedicated to increasing environmental and social corporate responsibility. Founded in 1992, As You Sow envisions a safe, just, and sustainable world in which environmental health and human rights are central to corporate decision making. The Energy, Environmental Health, Waste, Proxy Power, and Human Rights programs create industry-wide change through corporate dialogue, shareholder advocacy, coalition building, and innovative legal strategies. 

Andrew brings over 30 years of experience as a Senior Executive and strategist in the clean-tech, communications, and life science sectors. Prior to As You Sow, he founded a clean-tech start-up to develop innovative fuel cell technologies for grid-scale energy storage, a biofuel start-up, and a medical device start-up. He ran a media and technology company for 15 years that developed interactive technology and has directed and produced several feature length documentary films, one of which, “Tie-Died: Rock ‘n Roll’s Most Deadicated Fans," tracked the followers of the Grateful Dead and premiered at Sundance.

Iyassu Essayas, At-Large Member

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.

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.

Leslie Samuelrich, At-Large Member

Leslie Samuelrich leads Green Century Capital Management, 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.

Aniket ShahAt-Large Member
Aniket Shah is currently a Senior Fellow at Columbia University and a Senior Advisor for Sustainable Finance at the UN Sustainable Development Solutions Network. Aniket was previously Head of Sustainability at OppenheimerFunds, a leading global asset manager, where he was responsible for working with OppenheimerFunds portfolio managers and investment product specialists to further integrate sustainable investing practices across all aspects of the firm’s business activities to better serve investors. 

Previously Aniket served as the Program Leader of the Financing for Sustainable Development Initiative at the UN Sustainable Development Solutions Network. In this role, Aniket advised national governments, global financial institutions and non-profit organizations on how to finance the sustainable development agenda.  Aniket also worked as an investment professional and strategist at Investec Asset Management, an international investment management firm based in South Africa and the United Kingdom. 

Aniket completed his doctorate from Oxford University in Economic Geography, focusing on sustainable finance at the Smith School of Enterprise and the Environment.

Kurt SummersAt-Large Member

Kurt Summers is currently a consultant. He was Treasurer of the City of Chicago from 2014 to 2019, when he oversaw Chicago’s $8 billion operating portfolio and sat on local pension boards with $25 billion in AUM. As Treasurer, Kurt committed to ensuring City investments generated returns and drove impact. To this end, while Kurt served as Treasurer, the City of Chicago implemented the most comprehensive ESG integration effort from any major city in the country. Chicago is now integrating ESG factors into 100 percent of its investment decisions on corporate securities. Additionally, Chicago  invested $20 million in Chicago’s last black owned community bank, which invests in underserved communities and created a $100 million local economic development vehicle that makes strategic investments in low-and middle-income neighborhoods.

Prior to becoming Treasurer, Kurt has the Senior Vice President at Grosvenor Capital Management, where he developed a new product that invested over $2 billion in minority and women-owned firms.