David Koch

David Koch shares majority control of Koch Industries, the second largest private U.S. firm in terms of revenue, with his brother Charles.Koch stepped down from his role as executive vice president in July 2018, citing health concerns; he was named director emeritus.Koch Industries, which has revenues of $110 billion, refines crude oil, produces fertilizer and makes Dixie cups and Quilted Northern toilet paper.A well-known philanthropist, David is a donor to New York's Lincoln Center and Memorial-Sloan Kettering Cancer Center.David Koch ran as the Libertarian Party's vice presidential candidate in 1980 on a ticket with Ed Clark; they won 1% of the vote.