High Quality Content by WIKIPEDIA articles David Hamilton Koch ( /ˈkoʊk/; born May 3, 1940) is an American businessman, philanthropist, political activist, and chemical engineer. He is a co-owner (with older brother Charles) and an executive vice president of Koch Industries, a conglomerate that is the second-largest privately held company in the U.S. Koch is the second-richest resident of New York City as of 2010.
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