Charles Koch is an American businessman and philanthropist, best known as the chairman and CEO of Koch Industries, one of the largest privately held companies in the United States. Born on November 1, 1935, in Wichita, Kansas, he took over the family business in 1967 and expanded it significantly, focusing on various industries, including energy, chemicals, and consumer products. In addition to his business endeavors, Koch is known for his political and philanthropic activities. He has been a prominent advocate for free-market principles and has supported various think tanks and organizations that promote libertarian ideas. His influence in both business and politics has made him a notable figure in contemporary American society.