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.


Jessica MowlesHuman Rights Program Officer

Jessica Mowles joined The Overbrook Foundation in 2019. She has spent over a decade advancing social justice and human rights in the nonprofit and philanthropy sectors. Most recently, she advised organizations on grantmaking strategy, strategic planning, and governance at TCC Group. Prior to that, she served as Program Officer for the Educational Foundation of America, funding reproductive justice and civic engagement work across the country. She has also consulted for organizations including the Human Rights Funders Network. As a result of her experiences growing up in the U.S. south, Jessica is passionate about addressing racial, economic, and gender injustice through long-term, structural means.

At Overbrook, Jessica oversees the Foundation’s human rights portfolios, partnering with grantees and other funders to support their shared goals. She earned a B.A. in Geography and Political Science from Macalester College and an M.P.A. in Nonprofit Management and Strategy from NYU’s Wagner School of Public Service. She serves on the U.S. Selection Committee of United World College, her high school alma mater.

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.


Megan Nickel, Environment Program Assistant

Megan Nickel graduated summa cum laude from Marist College in 2019 with a B.S. in Environmental Policy, and she joined the Overbrook team shortly thereafter.  During Megan’s internships with Environmental Advocates of New York and Scenic Hudson, she grew an appreciation for non-profit organizations. As a part of her Honors Senior Thesis, Megan developed and managed a Pedestrian Needs Assessment of the Southside region of the City of Poughkeepsie and presented the findings to the City Common Council.  She also studied Sustainable Human Development in San Jose, Costa Rica, and she is interested in environmental justice and international development.  

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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