<SEC-DOCUMENT>0000860413-17-000045-index.html : 20171023
<SEC-HEADER>0000860413-17-000045.hdr.sgml : 20171023
<ACCEPTANCE-DATETIME>20171023133629
ACCESSION NUMBER:		0000860413-17-000045
CONFORMED SUBMISSION TYPE:	8-A12B/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20171023
DATE AS OF CHANGE:		20171023

FILER:

	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

	FILING VALUES:
		FORM TYPE:		8-A12B/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34653
		FILM NUMBER:		171148778

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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST INTERSTATE BANCSYSTEM OF MONTANA INC
		DATE OF NAME CHANGE:	19930615
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-A12B/A
<SEQUENCE>1
<FILENAME>a10092017-8xaaclassa.htm
<DESCRIPTION>8-A12B/A
<TEXT>
Document 1 - file: a10092017-8xaaclassa.htm

</DOCUMENT>
</SEC-DOCUMENT>