<SEC-DOCUMENT>0000860413-21-000097-index.html : 20210224
<SEC-HEADER>0000860413-21-000097.hdr.sgml : 20210224
<ACCEPTANCE-DATETIME>20210224113345
ACCESSION NUMBER:		0000860413-21-000097
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210217
FILED AS OF DATE:		20210224
DATE AS OF CHANGE:		20210224

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Phillips Joyce Ann
		CENTRAL INDEX KEY:			0001594614

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34653
		FILM NUMBER:		21670087

	MAIL ADDRESS:	
		STREET 1:		1370 TIMBERLAKE MANOR PARKWAY
		CITY:			CHESTERFIELD
		STATE:			MO
		ZIP:			63017

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST INTERSTATE BANCSYSTEM INC
		CENTRAL INDEX KEY:			0000860413
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				810331430
		STATE OF INCORPORATION:			MT
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		P O BOX 30918
		STREET 2:		401 NO 31ST STREET
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59116-0918
		BUSINESS PHONE:		4062555300

	MAIL ADDRESS:	
		STREET 1:		P O BOX 30918
		STREET 2:		401 NO 31ST STREET
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59116-0918

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST INTERSTATE BANCSYSTEM OF MONTANA INC
		DATE OF NAME CHANGE:	19930615
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_161418441168202.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wf-form3_161418441168202.html

Document 1 - RAW XML: wf-form3_161418441168202.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>fibpoa_executed.htm
<DESCRIPTION>EXECUTED POA
<TEXT>
Document 2 - file: fibpoa_executed.htm

</DOCUMENT>
</SEC-DOCUMENT>