The co-owner of oil and manufacturing company Koch Industries, the second-largest privately held company in the US, is one of the world’s most well-known businessmen and philanthropists.
He is reportedly the fourth richest person in the US and the wealthiest resident of New York City.
He and his older brother Charles, 83, have been among the biggest donors to the Republican Party since the 1980s.
“It is with a heavy heart that I announce the passing of my brother David,” Charles Koch said in a statement. “Anyone who worked with David surely experienced his giant personality and passion for ...
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