Security First Bank to expand in Nebraska through acquisition from First Interstate Bank
News Staff
Wednesday, October 22, 2025
October 16, 2025, RAPID CITY, SD and BILLINGS, MT— Security First Bank (“Security First”) and First Interstate BancSystem, Inc. (“First Interstate”) (Nasdaq: FIBK) have announced the signing of a purchase and assumption agreement pursuant to which Security First will acquire 11 Nebraska branches from First Interstate’s wholly-owned subsidiary, First Interstate Bank.