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Grantmaking foundations in Tiburon, CA

21 grantmaking foundations in Tiburon, California, ranked by recent giving reported to the IRS (about $9.8M combined).

Top foundations by giving

  1. Skywords Family Foundation Inc a New Corporation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $2.5M (2024)
  2. Reed Schools Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $1.8M (2025)
  3. Sustainable Grant Making Partners Fund
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $1.5M (2024)
  4. The Dawn Redwoods Charitable Trust
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $700K (2025)
  5. Frances K and Charles D Field Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $640K (2025)
  6. Grey Family Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $550K (2025)
  7. The John Katie Hansen Family Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $510K (2024)
  8. Carolyn and Peter Friedman Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $400K (2024)
  9. Hilltop Group Charitable Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $370K (2025)
  10. Malaney Family Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $250K (2024)
  11. Jinnie K Simonsen and John V Carbone Foundation
    Tiburon, CA · Medical Research
    $250K (2025)
  12. Cambodia Family Support USA
    Tiburon, CA
    $79K (2022)
  13. The George Schwab and Leona Lauder Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $67K (2025)
  14. Cadieux Martin Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $59K (2025)
  15. Marin Sports Academy
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $55K (2022)
  16. Buckley Patchen
    Tiburon, CA · Environment
    $50K (2022)
  17. Phillips-Morrison Institute of California
    Tiburon, CA
    $25K (2024)
  18. Walter Iberti Charitable Foundation
    Tiburon, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $15K (2025)
  19. Strawberry Seals Inc
    Tiburon, CA · Human Services
    $9.6K (2025)
  20. Drever Family Foundation
    Tiburon, CA
    $5K (2022)
  21. Allan H Rappaport Charitable Foundation Inc
    Tiburon, CA
    $4.4K (2024)

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