Four Koch foundations gave money to the arts, medicine, humanities, educational institutions and public-policy organizations from 2007-2011. In some cases, more than one Koch family foundation gave to the same organization. As you hover over the interactive chart, you'll see where those intersections occur. This chart does not include a fifth foundation, the Knowledge and Progress Fund, chaired by Charles Koch. The Fund gave only to the nonprofit Donors Trust, which distributes money, donated anonymously, to a number of conservative causes.

Interactive graphic created by Haoyun Su, Investigative Reporting Workshop

Source: Research by Lydia Beyoud and Eric Holmberg, Investigative Reporting Workshop

Contributor: Madeline Beard, Investigative Reporting Workshop