Koch Industries, Inc. /ˈkoʊk/ is an American multinational corporation based in Wichita, Kansas, United States, with subsidiaries involved in manufacturing, trading, and investments. It was founded as Wood River Oil and Refining Company in 1940, and later as Rock Island Oil & Refining Company.
Koch also owns Invista, Georgia-Pacific, Molex, Flint Hills Resources, Koch Pipeline, Koch Fertilizer, Koch Minerals, and Matador Cattle Company. Koch companies are involved in core industries such as the manufacturing, refining, and distribution of petroleum, chemicals, energy, fiber, intermediates and polymers, minerals, fertilizers, pulp and paper, chemical technology equipment, ranching, finance, commodities trading, and other ventures and investments. The firm employs about 60,000 people in the United States and another 40,000 in 59 other countries.
In 2013-2015, Forbes listed it as the second largest privately held company in the United States (after Cargill), with an annual revenue of $115 billion, down from the largest in 2006. If Koch Industries were a public company in 2013, it would have ranked 17 in the Fortune 500.
Fred C. Koch, after whom Koch Industries, Inc. is named, co-founded the company in 1940 and developed an innovative crude oil refining process. His sons, Charles Koch, chairman of the board and chief executive officer, and David H. Koch, executive vice president, are principal owners of the company after they bought out their brothers, Frederick and William "Bill" Koch, for $1.1 billion in 1983. Charles and David H. Koch each own 42% of Koch Industries. Charles has stated that the company would go public "over my dead body". (Source: Wikipedia)