4processed

Form 4 — Insider Transaction

FIRST INTERSTATE BANCSYSTEM INC(FIBK)

Filing Date

June 1, 2026

Accepted

June 1, 2026

Accession No.

0002071416-26-000006

CIK

0000860413

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Della Camera DavidChief Financial OfficerOther3.4K$030.0KCommon StockJun 1, 2026