Businessman and philanthropist David Koch has died at the age of seventy-nine (79).
Koch was ranked as the eleventh (11) richest person in the world, with a fortune of forty-eight (48) billion dollars.
As an activist, Koch supported gay rights, same-sex marriage, and stem cell research.
Koch donated a significant amount of money to the Republican party.
His brother Charles Koch is the Chairman and CEO of Koch Industries, which David retired from in 2018.