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: Meyer Lori (EVP, Chief Information Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-15	Common Stock	A	3204	—	Acquired	13534	Direct
2025-03-17	Common Stock	F	71	$29.14	Disposed	13463	Direct
2025-03-17	Common Stock	F	156	$29.14	Disposed	13307	Direct
2025-03-17	Common Stock	F	76	$29.14	Disposed	13231	Direct
2025-03-17	Common Stock	F	423	$29.14	Disposed	12808	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1232	Indirect

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.