0000875357-09-000013 S-8 6 20090428 20090428 20090428 BOK FINANCIAL CORP ET AL 0000875357 6021 731373454 OK 1231 S-8 33 333-158846 09775803 BANK OF OKLAHOMA TOWER PO BOX 2300 TULSA OK 74192 9185953025 BANK OF OKLAHOMA TOWER P O BOX 2300 TULSA OK 74192 S-8 1 forms8.txt FORM S-8 EX-4 2 exhibit4.txt EXHIBIT 4.0 EX-5 3 exhibit5.txt EXHIBIT 5.0 EX-23 4 exhibit23.txt EXHIBIT 23.0 EX-23 5 exhibit231.txt EXHIBIT 23.1 EX-24 6 exhibit24.txt EXHIBIT 24.0