<SEC-DOCUMENT>0001209191-17-064810-index.html : 20171208
<SEC-HEADER>0001209191-17-064810.hdr.sgml : 20171208
<ACCEPTANCE-DATETIME>20171208175914
ACCESSION NUMBER:		0001209191-17-064810
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171201
FILED AS OF DATE:		20171208
DATE AS OF CHANGE:		20171208

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gaglia Philip G
		CENTRAL INDEX KEY:			0001697139

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34653
		FILM NUMBER:		171248029

	MAIL ADDRESS:	
		STREET 1:		PO BOX 30918
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59116

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>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
Document 1 - file: doc4a.html

Document 1 - RAW XML: doc4a.xml

</DOCUMENT>
</SEC-DOCUMENT>