<SEC-DOCUMENT>0000860413-24-000132-index.html : 20241105
<SEC-HEADER>0000860413-24-000132.hdr.sgml : 20241105
<ACCEPTANCE-DATETIME>20241105144443
ACCESSION NUMBER:		0000860413-24-000132
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20241101
FILED AS OF DATE:		20241105
DATE AS OF CHANGE:		20241105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Reuter James A
		CENTRAL INDEX KEY:			0002042435
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34653
		FILM NUMBER:		241427042

	MAIL ADDRESS:	
		STREET 1:		PO BOX 30918
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59116-0918

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST INTERSTATE BANCSYSTEM INC
		CENTRAL INDEX KEY:			0000860413
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		ORGANIZATION NAME:           	02 Finance
		IRS NUMBER:				810331430
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		401 NO 31ST STREET
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59101
		BUSINESS PHONE:		4062555311

	MAIL ADDRESS:	
		STREET 1:		401 NO 31ST STREET
		CITY:			BILLINGS
		STATE:			MT
		ZIP:			59101

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST INTERSTATE BANCSYSTEM OF MONTANA INC
		DATE OF NAME CHANGE:	19930615
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wk-form3_1730835875.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wk-form3_1730835875.html

Document 1 - RAW XML: wk-form3_1730835875.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>jreuterpoa_2.htm
<DESCRIPTION>EX-24
<TEXT>
Document 2 - file: jreuterpoa_2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>jreuterpoa_2001.jpg
<DESCRIPTION>EX-24
<TEXT>
Document 3 - file: jreuterpoa_2001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>jreuterpoa_2002.jpg
<DESCRIPTION>EX-24
<TEXT>
Document 4 - file: jreuterpoa_2002.jpg

</DOCUMENT>
</SEC-DOCUMENT>