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John Callahan is an Associate Director for Koch Real Estate Investments, part of the business development group within Koch Industries. John focuses on managing and investing in commercial real estate across the US.

John received a B.A. in History from Princeton University. Upon graduation, John was a Princeton in Asia Fellow teaching at China Foreign Affairs University in Beijing. After Princeton in Asia, John worked for a real estate development firm and healthcare tech company in Shanghai.  John moved to Dallas, TX to work for HFF, a commercial real estate capital markets intermediary. John served as a founding board member of Friends of Teach for America from 2016 to 2017.