Founders & Staff

United by a passion for social justice & Michigan football, Scott Thomas & Sammy Politziner founded Arbor Brothers in 2009.

  • Sammy Politziner


    Sammy graduated from the University of Michigan and moved to New York City, where he taught second grade in the South Bronx with Teach for America and founded a small academic summer camp for his students.  After a stint of world traveling, Sammy moved north for a master’s degree from the Harvard Graduate School of Education and then down south to teach at a KIPP school in North Carolina.  Sammy returned to New York for a job in investment banking at Kildare Capital, a boutique firm, where he spent five years providing sell-side M&A and capital formation advice. In addition to co-leading Arbor Brothers, Sammy serves as a director on the board of Exponent Philanthropy, the nation’s largest association of funders.


    Sammy Politziner



    Scott Thomas


  • Scott thomas


    After graduating from the University of Michigan with an engineering degree, Scott began his career teaching middle school mathematics with Teach for America in the Washington Heights neighborhood of New York City. He went on to earn an MBA from NYU, where he helped launch the nation’s first student-managed venture philanthropy fund. Scott worked at Lehman Brothers and later Neuberger Berman, where he helped manage investments in infrastructure and alternative energy companies. In addition to co-leading Arbor Brothers, Scott serves on the New York and National Boards of Summer Search, a national youth development organization.

Board of Directors

This core group of supporters bears fiduciary responsibility for the organization and ultimately selects the constituents of each grant portfolio.

  • Ken Glassman

    Arbor Brothers Board Chair | CEO & Chief Investment Officer of RWN Management, LLC

  • Noel Anderson

    Director of the Steinhardt School's Educational Leadership Program at New York University

  • Cathy Bacich

    Attorney (retired)

  • Michael Braner

    Partner at Sagard Capital Management

  • Ingrid Dyott

    Managing Director at Neuberger Berman

  • Michael Ellis

    Managing Director at Davis Investment Holdings

  • Geoff Goldstein

    Director at HFF LP

  • Erica Hamilton

    Principal at Arbor Brothers

  • Emily Keenan

    Teach for America (retired)

  • Mac Levine

    Partner at Corvex Management

  • Sammy Politziner

    Co-founder of Arbor Brothers

  • Sean Sauler

    Partner at Redwood Capital Management

  • Scott Thomas

    Co-founder of Arbor Brothers


Board of Advisors

From the beginning, the generously shared insights of these experienced social entrepreneurs have played an instrumental role in Arbor Brothers’ development.

  • Nick Ehrmann

    Founder and President of Blue Engine

  • Chaula Gupta

    Vice President of Program Investments at Chicago Public Education Fund

  • Matt Klein

    Executive Director at the Center for Economic Opportunity

  • Rich Leimsider

    Executive Director of the Safe Passage Project

  • Nitzan Pelman

    CEO of ReUp Education

  • Jessica Sager

    Co-Founder and Executive Director at All Our Kin



We are extraordinarily grateful to the people who power our work: our donors.

This generous group of families and foundations has refused to accept that life circumstances should dictate access to opportunity. Since 2009 their investments in Arbor Brothers have helped build and sustain organizations working every day to transform the lives of young people in our community.

Contribute to the Solution

Arbor Brothers finds, funds, and deeply supports the most promising second-stage nonprofits in the tri-state area.