Great opportunities to help others seldom come, but small ones surround us every day.
Sally Koch
David Hamilton Koch was an American businessman, political activist, philanthropist, and chemical engineer. In 1970, he joined the family business: Koch Industries, the second-largest privately held company in the United States. He became president of the subsidiary Koch Engineering in 1979 and became a co-owner of Koch Industries in 1983. Koch served as an executive vice president of Koch Industries until he retired due to health issues in 2018.