Board of Directors 

Arthur G. Altschul, Jr., Chair of the Board

Stephen F. Altschul

Emily Altschul-Miller

Carolyn J. Cole

Cooper Cox

Joyce Fensterstock

Kathryn C. Graham

Kathryn G. Graham, Vice Chair and Treasurer

Julie Graham

Robert C. Graham, Jr., Director Emeritus

Aaron Labaree

Robert Labaree

Dinorah Matias-Melendez

Isaiah Orozco, Vice Chair and Secretary

Foundation Staff 

Stephen A. Foster, President and Chief Executive Officer
Steve is the first President and CEO of The Overbrook Foundation. His career began at the National Institutes of Health in 1974 and has continued, since 1985, within private philanthropy. Between 1997 and joining The Overbrook Foundation in June 2002 he worked as an independent consultant, providing advice to foundations, corporations and individuals on a broad spectrum of programmatic, governance and management concerns. Steve spent twelve years with the Charles A. Dana Foundation; beginning his career in private philanthropy at Dana as a program officer in 1985 and, ultimately, serving as the Dana Foundation president.

Steve is Chair of the Steering Committee for the Sunrise Initiative for Human Rights in the U.S., a collaborative donor initiative dedicated to the full realization of human rights in the United States. He also co-chairs the Civil Marriage Collaborative (CMC) a separate donor collaborative focusing on state-based strategies to win marriage equality for same-sex couples. Since its inception in 2005, the CMC has been active in all state-based civil marriage campaigns which have either won the freedom to marry for same sex couples or have successfully defended the freedom to marry from attack.

After graduating from Pennsylvania State University in 1969 with a B.A. in Political Science, he served as a volunteer for two years in the United States Peace Corps in Sierra Leone, West Africa. Upon returning he studied at Northwestern University where he earned his M.A. in history (African Studies) in 1973, graduating Magna Cum Laude. He went on to successfully complete the National Institutes of Health’s Management Intern Training Program in 1975.


Daniel R. Katz, Vice President, Environment Program

Daniel Katz is the Vice President, Environment Program at The Overbrook Foundation, where he directs the Foundation’s environmental giving in the areas of international biodiversity conservation and sustainable consumption. He is the Board Chair and former president of the Rainforest Alliance, an organization he co-founded in 1986 at the age of 24. At Overbrook, Mr. Katz created Catalog Choice – a web-based service that offers an easy way for millions of users to stop the flow of unwanted catalogs into their mailboxes. He is currently spearheading initiatives to build a stronger, more inclusive and equitable environmental movement in the United States.

A former Kellogg Foundation National Leadership Fellow, Mr. Katz has served as a consultant, adviser and board member for numerous organizations including People for the American Way, and the Nespresso Sustainability Advisory Board. He is a member of the Council on Foreign Relations and the editor of two volumes: Why Freedom Matters: The Spirit of the Declaration of Independence in Prose, Poetry and Song (Workman) and Tales from the Jungle: A Rainforest Reader (Crown).

Mr. Katz is a frequent speaker at colleges and universities around the country on the topics of the social entrepreneurism, rainforest conservation, sustainability, and leadership. He received his MBA from the Stern School of Business, New York University where he recently became an Adjunct Professor. Katz studied Chinese linguistics in Wuhan, the People’s Republic of China. He lives in New York City with his wife, Maggie, and their two children.


Mary J. GreccoChief Financial Officer

Mary began working with The Overbrook Foundation in 1989 when she joined Overbrook as its Assistant Controller, and she now serves as Chief Financial Officer. Prior to joining Overbrook, she worked in public accounting at Coopers & Lybrand, now Price Waterhouse Coopers, in both the audit and executive tax departments. Mary is an active member of the American Institute of Certified Public Accountants and the New York State Society of CPAs. She graduated summa cum laude from Manhattan College where she earned a B.S. with a dual major in Accounting and Computer Information Systems.


Sarah AbelowHuman Rights Program Officer

Sarah Abelow joined The Overbrook Foundation starting as the Human Rights Program Assistant in 2011. Since that time, she has assisted with the Foundation’s human rights grantmaking and other administrative tasks at the Foundation. Most recently, she has been working as a program officer to support grantmaking around reproductive justice, defending human rights defenders and the reform of the role of money in our democracy. She is a former CoreAlign Generative Fellow through which she examined the role of philanthropy in supporting innovation particularly in the reproductive health, rights and justice movements.  She joined Overbrook after attending Pomona College in Southern California where she studied History and French and worked with several non-profit organizations.


Katie GwathmeyEnvironment Program Associate

Katie Gwathmey works with the Environment Team to support grantmaking around movement building, plastic pollution, and innovation. She also assists with various special projects within the Foundation. Prior to joining Overbrook, she worked for a short time as a special project assistant at the Open Space Institute, a Northeast based land conservation organization. In addition, for two years she served as a management consultant at Navigant Consulting within the Life Science practice. She graduated from Davidson College in 2014 with a B.S. in Biology and concentration in Environmental Studies.


Nikole D. LaVelle, Grants Manager

Nikole LaVelle Neilon is Grants Manager for The Overbrook Foundation. She partners with program staff and the Chief Financial Officer on the operational aspects of the Foundation’s grantmaking, including intake of grant requests, payments, and reporting as well as with due diligence and grants compliance.  Nikole began her work with the Foundation in 2007 providing administrative support and in 2012 began providing grants management services. Nikole graduated from Pitzer College with a concentration in International Intercultural Studies and is originally from El Paso, TX.


Ranger Ruffins, Environment Program Assistant

Ranger Ruffins is the Environment Program Assistant at The Overbrook Foundation. She graduated in 2016 with a B.A. in Environmental Studies from the University of North Carolina at Chapel Hill. Ranger studied abroad in Uganda where she conducted a research project on the industrial impacts of wetlands, and also interned at the Jinja Municipal Council for Environment. She studied marine biology and geography at the UNC Galapagos Science Center. 

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