Koch Industries, headquartered in Wichita, Kansas, is one of the largest private companies in the United States. Founded by Fred C. Koch in 1940, the company has grown significantly under the leadership of Charles Koch. Koch Industries operates in a diverse range of sectors, including manufacturing, refining, chemicals, and consumer products. It is known for its extensive involvement in both innovative and traditional industries, such as technology investments and resource management. The company emphasizes a principle-based management approach, aiming to create products and services that improve quality of life while promoting sustainable practices