MacArthur Foundation

The John D. and Catherine T. MacArthur Foundation is an American private foundation that makes grants and impact investments to support non-profit organizations in approximately 117 countries around the world. As of 2025, the MacArthur Foundation has an endowment of $9 billion and provides hundreds of millions of dollars annually in grants and impact investments.

Source: Wikipedia — MacArthur Foundation (CC BY-SA 4.0)

MacArthur Foundation

The John D. and Catherine T. MacArthur Foundation is an American private foundation that makes grants and impact investments to support non-profit organizations in approximately 117 countries around the world. As of 2025, the MacArthur Foundation has an endowment of $9 billion and provides hundreds of millions of dollars annually in grants and impact investments.

Source: Wikipedia "MacArthur Foundation" · CC BY-SA 4.0

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