Billionaire and conservative activist David Koch has died . He was 79 years old.
His brother Charles released a statement through Koch Industries confirming the passing.
The brothers co-owned Koch Industries – a massive energy and chemical company in the midwest.
David Koch stepped down from his role at the company last year due to his declining health.
The Koch brothers also worked to build a huge conservative network of donors and organizations.
the work they did on the political front mobilized conservative voters and swayed lawmakers toward their conservative – and libertarian – leaning economic polices.