Biography
Charles Koch & family is among the world's most closely watched billionaires from UNITED STATES, with an estimated fortune of $73.8B. The bulk of Charles Koch & family's wealth comes from Koch, Inc., closely tied to Koch, Inc.. Charles Koch is an American businessman, engineer, and philanthropist, best known as the chairman and co-CEO of Koch Industries, one of the largest private companies in the United States. Born in Wichita, Kansas, in 1935, Koch earned degrees from MIT in general engineering, nuclear engineering, and chemical engineering. He joined Koch Industries in 1961, becoming chairman and CEO in 1967. Under his leadership, Koch Industries has diversified into various sectors, including pipelines, chemicals, software, and automotive components. With a net worth of $73.8 billion as of 2024, Koch is a prominent figure in the business world, known for his support of free-market principles and his philanthropic efforts. He has also been a major funder of libertarian and conservative causes. Koch is married to Liz Koch and has two children, Chase and Elizabeth. Key career milestones include Joined Koch Industries (1961); Became President of Rock Island Oil & Refining Company (1966); Became Chairman and CEO of Koch Industries (1967); Named first ever co-CEO (2023). This profile documents verified holdings, career milestones, and multi-year net worth history drawn from Forbes rankings, company filings where available, and our editorial methodology. Readers use it to understand how public markets, private company stakes, and major business bets shape one of the largest personal fortunes on record. Wealth estimates move with stock prices, funding rounds, and disclosed transactions—figures on this page are research estimates, not cash balances. We publish year-by-year net worth history when verified data exists, link to primary sources, and update profiles when Forbes Real-Time Billionaires or major filings change the picture materially. For investors and researchers, the most useful reading pairs the headline number with ownership structure, geography, sector exposure, and the multi-year history chart on this page—especially during volatile markets when single-day moves can shift rankings without any operational change at the underlying companies.