0001248915-09-000156 4 1 20091228 20091230 20091230 NELL STEVEN E 0001248967 4 34 000-19341 091265146 C/O FREDERIC DORWART 124 E FOURTH STREET TULSA OK 74103 BOK FINANCIAL CORP ET AL 0000875357 6021 731373454 OK 1231 BANK OF OKLAHOMA TOWER PO BOX 2300 TULSA OK 74192 9185953025 BANK OF OKLAHOMA TOWER P O BOX 2300 TULSA OK 74192 4 1 primary_doc.xml PRIMARY DOCUMENT