Form4insider filings, from the source

Company · CIK 0000860413 · SIC 6022 — State Commercial Banks · Nasdaq

FIRST INTERSTATE BANCSYSTEM INC · FIBK

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $1.0M · 3net −$1.0M
$10k$10k$100k$100k$1M$1MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 17Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 SForm 4 →Sep 16, 7:04 pm EDTJulie A Scott +410% Owner2,700$37.64$101,628484,309−0.55%
Sep 14, 2026 AForm 4 →Sep 16, 1:16 pm EDTJeffery D. LeeChief Operations Officer5,417——5,417—
Sep 14, 2026 SForm 4 →Sep 14, 7:21 pm EDTJonathan R Scott +510% Owner8,071$37.29$300,968817,738−0.98%
Sep 11, 2026 SForm 4 →Sep 14, 1:31 pm EDTJonathan R Scott +510% Owner16,929$37.03$626,881825,809−2.01%
Sep 10, 2026 FForm 4 →Sep 22, 6:21 pm EDTChristopher L. SheplerChief Banking Officer222$36.88$8,18713,018— late

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.