FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2025

Mar 18, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2025-03-15

Reporting Person: Robbins Kristina (EVP, Chief Operations Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-15	Common Stock	A	4465	—	Acquired	17685	Direct
2025-03-17	Common Stock	F	151	$29.14	Disposed	17534	Direct
2025-03-17	Common Stock	F	389	$29.14	Disposed	17145	Direct
2025-03-17	Common Stock	F	309	$29.14	Disposed	16836	Direct
2025-03-17	Common Stock	F	494	$29.14	Disposed	16342	Direct

Footnotes

F1: Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest in three equal annual installments beginning on March 15, 2026, subject to the reporting person's continued employment through each applicable vesting date.

F2: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.