FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2025

Jul 18, 2025

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2024-12-31

Reporting Person: Scott Jeremy (Director, 10% Owner)
Reporting Person: Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15 (10% Owner)
Reporting Person: NBAR5 Limited Partnership (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-12-05	Common Stock	G	475	—	Acquired	3488830	Indirect
2024-12-05	Common Stock	G	475	—	Acquired	3489305	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2946	Direct
Common Stock	3488355	Indirect

Footnotes

F1: Shares issuable upon vesting of restricted stock units held as of the date of this filing and granted to Jeremy Scott pursuant to the issuer's 2023 Equity and Incentive Plan pursuant to the issuer's director compensation policy for service as an issuer director. The restricted stock units vest on June 1, 2026, subject to Mr. Scott's provision of continuous service to the issuer through the earlier of the applicable vesting date or the date of the issuer's 2026 annual meeting of stockholders.

F2: Composed of 69,892 shares held of record by Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15; 3,416,108 shares held of record by NBAR5 Limited Partnership; and 2,355 shares held of record by Jeremy Scott's spouse that were inadvertently omitted from Mr. Scott's Form 3 filed on February 11, 2022, that corresponded with his joining of the Scott family Schedule 13D shareholder group.

F3: Includes these 475 shares received by Jeremy Scott's spouse as a gift from a family member.

F4: Includes these 475 shares received by Jeremy Scott TTEE, Jeremy Scott Revocable Trust Dtd 6/25/15 as a gift from a family member.

F5: 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.