Mailee Walker photoMailee Walker, Executive Director

Mailee became executive director of the Claneil Foundation in 2007. Prior to joining the Claneil Foundation, she was vice president, communication/program officer of the Wells Fargo Regional Foundation. She previously served as executive director of the Stanford Medical Youth Science Program and project coordinator for the Neighborhood Improvement Initiative in California. Mailee serves as a board member of Ones Up.  She is an advisory board member for the Center for Effective Philanthropy and an activator for Trust-Based Philanthropy.  She is co-founder of the Asian Mosaic Fund Giving Circle and a member of Asian Americans/Pacific Islanders in Philanthropy. Mailee earned a BA in urban studies from Stanford University and an MBA in change management from the Wharton Graduate School of Business. She is an alumna of the Coro Fellows Program, the Center on Philanthropy’s Jane Addams Fellowship, and Leadership Philadelphia.



Andrea Bretting photoAndrea Bretting, Senior Program Officer

Andrea joined the Claneil Foundation in 2008, bringing with her many years of experience with local, national and international nonprofits. She began her career in Philadelphia as a community social worker. While living in Berlin, Germany, she worked for the Amadeu Antonio Stiftung, a foundation that addresses anti-Semitism and furthers the development of a democratic civil society. Before joining the Claneil Foundation, she was an associate director at the United Way of Southeastern Pennsylvania. Andrea serves on the Steering Committee of the Health and Environmental Funders Network and is a supporting member of the American Friends of Action Reconciliation/Service for Peace. As a DAAD fellow of the German Academic Exchange Program, Andrea earned her BA/MA in Social Work in Cologne, Germany. She also holds a MA in International Development from American University in Washington, DC.


Rebecca Martinez PhotoRebecca (Becky) Martinez, Grants Manager 

Becky became the grants manager of the Claneil Foundation in 2021. Prior to joining the Claneil Foundation, she held various positions throughout her 27-year career at Wells Fargo and its predecessor banks as an accomplished executive assistant.  She has extensive experience in administrative management and working in partnership with senior leadership in various banking divisions, including Commercial Banking, Human Resources, Finance, Community Relations, and Regional Foundation. Becky is a board member of the Philadelphia Prevention Partnership.  She is also committed to community outreach projects in the Philadelphia area. Becky earned a certificate in Computer Programming from Emory College in Bayamon, Puerto Rico.


Karen Race photoKaren Race, Communications Manager

Karen joined the Claneil Foundation in 2009 with a variety of experience in managing communications, programming, and administration at non-profit and higher education institutions. Prior to joining the Foundation, Karen held positions at Drexel University’s Westphal College of Media Arts and Design, and Eisenhower Fellowships, an international exchange and leadership development organization. As a freelance writer, Karen's work has appeared in such publications as the Philadelphia Social Innovations Journal, and she served as a correspondent for the News of Delaware County, where she covered local government and the 2008 presidential election. She was selected as an Emerging Leader by the United Way of Greater Philadelphia and Southern New Jersey. Karen began her career at the League of Conservation Voters Education Fund. At the Claneil Foundation, Karen works on internal and external communications that will support and elevate the work of the non-profit organizations we serve. Karen holds a BA in English with a minor in Political Science from Temple University.