In a letter to all employees of Koch Industries sent Tuesday, David’s brother Charles Koch, who serves as chairman and CEO of Koch Industries, said that issues that led to a 2016 hospitalization have not been resolved, and David’s “health has continued to deteriorate.” He did not provide further details about his brother’s condition.
“As a result, he is unable to be involved in business and other organizational activities. Because of this, David will be retiring from his responsibilities at Koch and other organizations,” the letter states.
Following the Koch Industries announcement, Americans for Prosperity Foundation announced that David, 78, would be resigning from its board.
David was the Libertarian Party’s vice presidential candidate for the 1980 presidential election. He and his brother Charles also founded Citizens for a Sound Economy, a predecessor organization to the advocacy group FreedomWorks.