<SEC-DOCUMENT>0001628280-18-008983-index.html : 20180702
<SEC-HEADER>0001628280-18-008983.hdr.sgml : 20180702
<ACCEPTANCE-DATETIME>20180702164149
ACCESSION NUMBER:		0001628280-18-008983
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20180702
DATE AS OF CHANGE:		20180702
GROUP MEMBERS:		HOMER A. SCOTT, JR.,
GROUP MEMBERS:		J.S. INVESTMENTS LTD PARTNERSHIP,
GROUP MEMBERS:		JAMES R. SCOTT,
GROUP MEMBERS:		JOHN M. HEYNEMAN, JR.,
GROUP MEMBERS:		N BAR 5, LTD PARTNERSHIP,
GROUP MEMBERS:		RANDALL I. SCOTT,
GROUP MEMBERS:		SUSAN S. HEYNEMAN
GROUP MEMBERS:		THOMAS W. SCOTT,

SUBJECT COMPANY:	

	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:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-78756
		FILM NUMBER:		18933290

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SCOTT JAMES R
		CENTRAL INDEX KEY:			0001198533

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	MAIL ADDRESS:	
		STREET 1:		C/O FIRST INTERSTATE BANCSYSTEM INC
		STREET 2:		P O BOX 30918
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59116
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>sc13da2018.htm
<DESCRIPTION>SC 13D/A
<TEXT>
Document 1 - file: sc13da2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>sc13da_exhibit991x6272018.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: sc13da_exhibit991x6272018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>3
<FILENAME>a993_powerofattorney.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
Document 3 - file: a993_powerofattorney.htm

</DOCUMENT>
</SEC-DOCUMENT>