In 2010, MediaTransparency said that Heartland received funding from politically conservative foundations such as the Castle Rock Foundation, the Sarah Scaife Foundation, the John M. Olin Foundation, and the Lynde and Harry Bradley Foundation. Between 2002 and 2010, Donors Trust, a nonprofit donor-advised fund, granted $13.5 million to the Institute. In 2011, the Institute received $25,000 from the Charles G. Koch Charitable Foundation. The Charles Koch Foundation states that the contribution was "$25,000 to the Heartland Institute in 2011 for research in healthcare, not climate change, and this was the first and only donation the Foundation made to the institute in more than a decade".