The most prominent billionaire residing in Kansas is industrialist and businessman Charles Koch, who serves as the chairman and chief executive officer of Koch Industries, one of the largest privately held corporations in the United States. Based permanently in Wichita, Kansas, Koch oversees a vast multinational conglomerate with diverse operations spanning petroleum refining, chemical engineering, pipelines, forest products, consumer paper goods, and advanced software technology. His long-standing residency in Wichita anchors the state's notable presence on global wealth lists.