<SEC-DOCUMENT>0000860413-25-000104-index.html : 20250604
<SEC-HEADER>0000860413-25-000104.hdr.sgml : 20250604
<ACCEPTANCE-DATETIME>20250604150157
ACCESSION NUMBER:		0000860413-25-000104
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20250601
FILED AS OF DATE:		20250604
DATE AS OF CHANGE:		20250604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Della Camera David
		CENTRAL INDEX KEY:			0002071416
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34653
		FILM NUMBER:		251022845

	MAIL ADDRESS:	
		STREET 1:		P.O. 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]
		ORGANIZATION NAME:           	02 Finance
		EIN:				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_1749063709.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wk-form3_1749063709.html

Document 1 - RAW XML: wk-form3_1749063709.xml

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>dellacamerapoa001.jpg
<TEXT>
Document 3 - file: dellacamerapoa001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>dellacamerapoa002.jpg
<TEXT>
Document 4 - file: dellacamerapoa002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>dellacamerapoa003.jpg
<TEXT>
Document 5 - file: dellacamerapoa003.jpg

</DOCUMENT>
</SEC-DOCUMENT>