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: Asker Lorrie F (Chief Banking Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-15	Common Stock	A	6712	—	Acquired	21258	Direct
2025-03-17	Common Stock	F	129	$29.14	Disposed	21129	Direct
2025-03-17	Common Stock	F	318	$29.14	Disposed	20811	Direct
2025-03-17	Common Stock	F	257	$29.14	Disposed	20554	Direct
2025-03-17	Common Stock	F	846	$29.14	Disposed	19708	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.