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    PUBLIC DOCUMENT COUNT:		63
    CONFORMED PERIOD OF REPORT:	20250408
    FILED AS OF DATE:		20250408
    DATE AS OF CHANGE:		20250408

    FILER:

    	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

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    		SEC ACT:		1934 Act
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    		FILM NUMBER:		25821916

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    		CITY:			BILLINGS
    		STATE:			MT
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    		CITY:			BILLINGS
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    		ZIP:			59101

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    		DATE OF NAME CHANGE:	19930615
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