FORM 10-K 12/31/11

Company

BOK FINANCIAL CORP

Filed

February 28, 2012

Period of Report

December 31, 2011

Accession Number

0000875357-12-000010

A 10-K is a company's comprehensive annual report, required by the SEC. It includes audited financial statements, a description of the business, risk factors, and management's discussion of results. Learn more about 10-K filings →