Jeremy Scott - 31 Dec 2025 Form 5 Insider Report for FIRST INTERSTATE BANCSYSTEM INC (FIBK)

Signature
JEREMY SCOTT, By: /s/ Timothy Leuthold, Attorney-in-Fact for Reporting Person
Issuer symbol
FIBK
Transactions as of
31 Dec 2025
Net transactions value
$0
Form type
5
Filing time
17 Feb 2026, 16:30:16 UTC
Previous filing
06 Jan 2026

Reporting Owners (3)

Name Relationship Address Signature Signature date CIK
Scott Jeremy Director, 10%+ Owner P.O. BOX 30918, BILLINGS JEREMY SCOTT, By: /s/ Timothy Leuthold, Attorney-in-Fact for Reporting Person 17 Feb 2026 0001803925
Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15 10%+ Owner P.O. BOX 7113, BILLINGS JEREMY SCOTT TTEE, JEREMY SCOTT REVOCABLE TRUST DTD 6/25/15, By: /s/ Timothy Leuthold, Attorney-in-Fact 17 Feb 2026 0001909124
NBAR5 Limited Partnership 10%+ Owner 401 N. 31ST ST, BILLINGS NBAR5 LIMITED PARTNERSHIP, By: /s/ Timothy Leuthold, Attorney-in-Fact 17 Feb 2026 0002076804

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction FIBK Common Stock Gift $0 +236,808 $0.000000 236,808 04 Aug 2025 See footnote F1
transaction FIBK Common Stock Gift $0 +550 +0.02% $0.000000 3,513,549 08 Dec 2025 See footnote F2, F3
holding FIBK Common Stock 2,946 31 Dec 2025 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reportable beneficial ownership acquired upon receipt of shares by gift by Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15 of general partner interests in NBAR5 O Limited Partnership, which partnership holds such shares directly and with respect to which the reporting persons, as applicable, previously held only limited partner interests. The reporting persons disclaim beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
F2 Composed of 3,416,108 shares held of record by NBar5 Limited Partnership, 25,119 shares held of record by Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15 (550 of which were received as a gift on August 8, 2025 but inadvertently previously reported incorrectly as held directly), 68,942 shares held of record by Jeremy Scott Trustee, 2025 Grantor Retained Annuity Irrevocable Trust, and 3,380 shares held of record by Jeremy Scott's spouse (550 of which were received as a gift as described in the table).
F3 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 to which this footnote relates. 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.