<SEC-DOCUMENT>0000875357-18-000075-index.html : 20180905
<SEC-HEADER>0000875357-18-000075.hdr.sgml : 20180905
<ACCEPTANCE-DATETIME>20180905162646
ACCESSION NUMBER:		0000875357-18-000075
CONFORMED SUBMISSION TYPE:	425
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20180905
DATE AS OF CHANGE:		20180905

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BOK FINANCIAL CORP ET AL
		CENTRAL INDEX KEY:			0000875357
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				731373454
		STATE OF INCORPORATION:			OK
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		425
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37811
		FILM NUMBER:		181055385

	BUSINESS ADDRESS:	
		STREET 1:		BANK OF OKLAHOMA TOWER
		STREET 2:		BOSTON AVENUE AT SECOND STREET
		CITY:			TULSA
		STATE:			OK
		ZIP:			74172
		BUSINESS PHONE:		9185886000

	MAIL ADDRESS:	
		STREET 1:		BANK OF OKLAHOMA TOWER
		STREET 2:		P O BOX 2300
		CITY:			TULSA
		STATE:			OK
		ZIP:			74192

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BOK FINANCIAL CORP ET AL
		CENTRAL INDEX KEY:			0000875357
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				731373454
		STATE OF INCORPORATION:			OK
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		425

	BUSINESS ADDRESS:	
		STREET 1:		BANK OF OKLAHOMA TOWER
		STREET 2:		BOSTON AVENUE AT SECOND STREET
		CITY:			TULSA
		STATE:			OK
		ZIP:			74172
		BUSINESS PHONE:		9185886000

	MAIL ADDRESS:	
		STREET 1:		BANK OF OKLAHOMA TOWER
		STREET 2:		P O BOX 2300
		CITY:			TULSA
		STATE:			OK
		ZIP:			74192
</SEC-HEADER>
<DOCUMENT>
<TYPE>425
<SEQUENCE>1
<FILENAME>cobizfinanciale-letterhead.htm
<DESCRIPTION>425
<TEXT>
Document 1 - file: cobizfinanciale-letterhead.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>cobiza01.jpg
<TEXT>
Document 2 - file: cobiza01.jpg

</DOCUMENT>
</SEC-DOCUMENT>