Jeremy Scott - 05 Aug 2025 Form 4 Insider Report for FIRST INTERSTATE BANCSYSTEM INC (FIBK)

Role: Director, 10%+ Owner
Signature: /s/ Kirk D. Jensen, as attorney in fact for reporting person
Issuer symbol: FIBK
Transactions as of: 05 Aug 2025
Transactions value $: $0
Form type: 4
Filing time: 05 Sep 2025, 21:39:13 UTC
Previous filing: 03 Jun 2025
SEC: View on sec.gov

Reporting Owners (3)

Name	Relationship	Address	Signature	Signature date	CIK
Scott Jeremy	Director, 10%+ Owner	P.O. BOX 30918, BILLINGS	/s/ Kirk D. Jensen, as attorney in fact for reporting person	05 Sep 2025	0001803925
Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15	10%+ Owner	P.O. BOX 7113, BILLINGS	NBAR5 Limited Partnership by: +	05 Sep 2025	0001909124
NBAR5 Limited Partnership	10%+ Owner	401 N. 31ST ST, BILLINGS	Jeremy Scott TTEE, Jeremy Scott Revocable Trust, Dtd 6/25/15, by: +	05 Sep 2025	0002076804

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FIBK	Common Stock	Gift	$0	+22.9K	+0.66%	$0.00	3.51M	03 Sep 2025	see footnote	F1, F2
transaction	FIBK	Common Stock	Small acquisition under Rule 16a-6	$0	+216	+0.01%	$0.00	3.51M	05 Aug 2025	see footnote	F1, F2
holding	FIBK	Common Stock						2.95K	05 Aug 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Composed of 3,416,108 shares held of record by NBar5 Limited Partnership, 93,511 shares held of record following both transactions reported herein by Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15, and 2,830 shares held of record by Jeremy Scott's spouse.
F2	As a result of agreements entered into among the reporting persons, the issuer, and other stockholders of the issuer signatory thereto, the reporting persons may be deemed members of a group with the other signatories to the agreement and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of his or its pecuniary interest therein. The reporting persons expect to file future Forms 4 or 5, if any, together with the indication of direct or indirect ownership in Tables I and II being made from Jeremy Scott's perspective, unless expressly noted otherwise by footnote. The nature of beneficial ownership is described in detail by footnote for all reporting persons.

Content

Composed of 3,416,108 shares held of record by NBar5 Limited Partnership, 93,511 shares held of record following both transactions reported herein by Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15, and 2,830 shares held of record by Jeremy Scott's spouse.

As a result of agreements entered into among the reporting persons, the issuer, and other stockholders of the issuer signatory thereto, the reporting persons may be deemed members of a group with the other signatories to the agreement and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of his or its pecuniary interest therein. The reporting persons expect to file future Forms 4 or 5, if any, together with the indication of direct or indirect ownership in Tables I and II being made from Jeremy Scott's perspective, unless expressly noted otherwise by footnote. The nature of beneficial ownership is described in detail by footnote for all reporting persons.