On September 9, 2016, the SEC issued a settled administrative proceedings against BOKF, NA. According to the SEC: "These proceedings arise out of the assistance provided by BOKF to Christopher Brogdon ("Brogdon") in connection with a series of fraudulent bond offerings through which Brogdon raised millions of dollars from investors to build, purchase, and renovate nursing homes, assisted living facilities, and retirement communities throughout the Southeastern and Midwestern United States."

On September 9, 2016, the SEC announced that: "a subsidiary of Oklahoma-based BOK Financial Corporation has agreed to pay more than $1.6 million to settle charges that it concealed numerous problems and red flags from investors in municipal bond offerings to purchase and renovate senior living facilities."

"The Division of Enforcement ("Division") now requests that a Fair Fund be established pursuant to Section 308(a) of the Sarbanes-Oxley Act, for the $1,667,721.36 in disgorgement, prejudgment interest, and civil money penalty paid by BOKF, and that the Fair Fund be transferred to the Monitor in the Brogdon District Court Action, so that the Fair Fund can be combined with the funds obtained in that action and distributed by the Monitor to harmed investors."