About Us

The Sustainable Investments Institute (Si2) is a non-profit organization based in Washington, D.C. We conduct impartial research and publish reports on organized efforts to influence corporate behavior on social and environmental issues.

Our Staff

Our staff is dedicated to providing the highest quality reports on corporate responsibility issues.

Our Board of Directors

Please click here for a full list of our board and biographies

Heidi Welsh

Executive Director

Email Heidi
Heidi Welsh, the founding executive director of the Sustainable Investments Institute (Si2), has analyzed and written about corporate responsibility issues since the late 1980s. She oversees Si2's operations and research. Welsh was the lead author of Si2's two studies about the corporate governance of political spending in the S&P 500, published in 2010 and 2011 with the IRRC Institute. Previously, Welsh helped author seasonal and annual reports on proxy voting trends starting in 1987 at the Investor Responsibility Research Center (IRRC), closely followed social and environmental shareholders resolutions and their results, and for 16 years ran the monitoring program examining corporate compliance with the MacBride principles for fair employment in Northern Ireland. She co-authored the Carbon Disclosure Project's 2007 report on S&P 500 companies and also set up a global sustainability metrics project for RiskMetrics analyzing 1,800 of the world's biggest companies. Welsh also served on the Global Reporting Initiative's Electric Utility Sector Working Group in 2008-09 and participated in an Oxford University assessment of Northern Ireland's affirmative action legislation. Welsh received her bachelor's degree in political science, cum laude, with a concentration in science, technology and public policy, from Carleton College. She holds a master's degree from the Institute for Conflict Analysis and Resolution at George Mason University.

Robin Young

Research Director

A contributing researcher and analyst since Si2's inception, Robin Young oversees Si2's research efforts in all areas of corporate political activity and related shareholder proposals and co-authored its two studies on corporate political spending. In addition, he covers all research for executive compensation, mortgage and banking issues as well as contributing to research and reporting on environmental and sustainability proposals. Previously, he was a senior analyst for IRRC, ISS and RiskMetrics from 2005 to 2009. There he covered a wide range of corporate governance issues, including evaluation of company specific compensation plans, management and shareholder sponsored corporate governance issues with special emphasis on mergers, acquisitions and recapitalizations, as well as management and shareholder proposals related to executive compensation. While at IRRC and ISS he also helped collect and verify evergreen and overall dilution data and was a contributing writer to several dilution studies. He helped manage overseas teams and perform quality control checks on data collected by these divisions, as well as helping to maintain and manage the organizations' databases of shareholder proposals. He also worked for RiskMetrics' ESG group, covering political contributions and predatory lending. In addition to writing background materials and company analyses on these topics, he contributed to custom consulting projects, providing research for several clients and helping to develop cases for them on corporate engagement. Before coming to IRRC, Young also worked as loan officer and team leader for several mortgage businesses. He holds B.A. in political science from Colorado College.

Sara E. Murphy

Senior Consultant (former)

Sara E. Murphy was a long-time contributor to Si2 who in January 2021 became Chief Strategy Officer at the Shareholder Commons.

She previously was an independent consultant producing research reports and articles on how social and environmental factors affect investment analysis and decision-making. She also provided corporate social responsibility training in both English and French, primarily to members of private industry and civil society in sub-Saharan Africa. Murphy began her career in 1998 working for NGOs in the international development and disaster response fields. In 2001, she transitioned into SRI research for the Corporate Benchmarking Service of the Investor Responsibility Research Center (IRRC), where she specialized in bioengineering and defense contracting research. After leaving IRRC, Sara spent several years at The Cadmus Group, an environmental consultant whose primary client was the EPA. In 2005, Murphy moved to Europe to work as a senior sustainability analyst for a large SRI fund management team, where her primary role was to define the investable universe on the basis of sustainability criteria. She worked as a consultant from 2011 to 2020, with a focus on the social and environmental factors at play in extractive industries.

Murphy holds a Bachelor of Arts degree from the University of Virginia in French and Spanish, and a Master of Arts degree from George Mason University in Economics. She currently serves on the Board of p.h. balanced films, a non-profit film and research organization that makes documentary films designed to educate consumers about social concerns in the global supply chains of common consumer goods.

Sol Kwon

Senior Consultant

Sol Kwon has researched and written about corporate responsibility issues since 2002. Most recently, between 2012 and 2015, she was the Associate Director at the Center for Political Accountability, a non-partisan group that promotes greater disclosure of corporate political spending. Kwon worked in the Finance and Strategy Practice of the Corporate Executive Board from 2010 to 2011 as a Strategic Research Consultant, helping corporate executives solve critical management-related problems. Between 2006 and 2010, Kwon was the Lead Analyst for Corporate Governance at the Capital Stewardship Program of the United Food and Commercial Workers International Union, where she worked with labor pension fund trustees on responsible investing and corporate governance reform campaigns. She joined IRRC's Social Issues Service in 2002, where she analyzed and wrote about sustainability reporting, global health pandemics, climate change, and defense contracting issues. Kwon earned her B.A. in International Studies at the Johns Hopkins University and holds an M.B.A. from the Robert H. Smith School of Business, University of Maryland.

Marcy Murninghan


Since 1983 Marcy Murninghan has worked on the integration of civic moral values into corporate and capital decision making as a scholar, author, educator and entrepreneur. Her current focus is on cultivating the concept of "civic fiduciary" duty, a set of higher standards and expectations for tax-exempt institutional investors. In the mid-70s, while a Harvard doctoral student, she worked with Rosabeth Moss Kanter on building opportunities for women in corporations. She then shifted to a public bureaucratic setting, working for the newly-appointed superintendent of the Boston Public Schools during its implementation of court-ordered desegregation, which she helped design and about which she wrote for her doctoral thesis. She then worked with and wrote about themes connected to civic virtue, capital markets and institutional accountability, covering South Africa-related investment and divestment for major corporations, institutional investors and legislative bodies. Dr. Murninghan is also co-founder and editor of The Murninghan Post (2010) blog and founding president of The Lighthouse Investment Group (1987), which provides consulting and analysis on values-based fiduciary duty, stewardship and corporate responsibility. She has served on the Advisory Council and the Steering Committee/Educational Review Committee of the Sustainability Accounting Standards Board (SASB) and has provided strategic policy and program advice to SASB; Harvard's Kennedy School Corporate Social Responsibility Initiative; Harvard Law School's Islamic Finance Project; the Global Reporting Initiative (GRI); Ceres; the Interfaith Center on Corporate Responsibility (ICCR); KLD Research & Analytics; the Council on Foundations; the Ford Foundation; The Boston Foundation and the New York State Comptroller. Dr. Murninghan also has taught courses and held fellowships at Harvard Divinity School, Harvard Kennedy School of Government, Tufts University and Babson College. In addition to post-doctoral work at HDS on values, the economy, and public life, she holds a doctorate from Harvard (education, law, public policy, organizational behavior); a master's degree from Antioch University (management); and a bachelor's degree from Albion College (religion).

Kit Slack


Kit Slack cut her teeth in the socially responsible investing realm as a Barnard undergraduate, class of 2000, when she led a Barnard-Columbia student group that advocated successfully for university voting on social and environmental shareholder proposals. After college, she worked for several years to organize low-wage workers in the building service and industrial laundry industries. Upon graduating from the Law School at the University of Chicago in 2007, she became an associate in the Employee Benefits and Executive Compensation Group at Cleary Gottlieb Steen & Hamilton LLP, where she drafted corporate disclosures for public companies and advised companies on employee-related liabilities during mergers and acquisitions. She now writes for her city paper, the Hyattsville Life & Times.

Asha Sanaker


Asha Sanaker is a writer and business manager based in Ithaca, New York. She began her career in social work, as an advocate for chronically homeless women and domestic violence victims in Seattle. Working on behalf of people whose lives are dependent on sound social policy was an essential foundation for the development of Asha's perspective as she moved into business management. After relocating to Ithaca in 2001, Asha began working in financial and business management for cooperatives, learning about the benefits and challenges of balancing financial success and social conscience. She also worked as a political journalist as a staff writer for Countable, a nonpartisan online political website, in 2017. Asha has a BA in African & African-American Studies from Earlham College.

Fuad Ahmad


Joy Borkholder


Susan Gaertner