History

History

BOK Financial traces its roots back more than a century to when Harry Sinclair and other noted Oklahoma oilmen founded Exchange National Bank of Tulsa during the early-century oil boom. They were looking for strong and stable funding for their endeavors in the newly discovered Tulsa oil fields. Widely known at the time as “The Oil Bank of America,” Exchange National Bank of Tulsa partnered with local oilmen over the years and became responsible for much of the financing for oil development in the region. Over the years, we have grown to be much more.

To learn more about BOK Financial’s history, watch this short video below.