First Interstate BancSystem Completes Merger with Great Western Bancorp

First Bancorp Acquires GrandSouth Bancorporation

January 1, 2023

Financial Services

First Bancorp (parent of First Bank) completed its acquisition of GrandSouth Bancorporation (the parent of GrandSouth Bank) effective January 1, 2023 in an all-stock merger (0.91 shares of First Bancorp per GrandSouth share). The deal expands First Bank's presence in South Carolina by adding GrandSouth's eight branches and is expected to accelerate First Bancorp's South Carolina growth, creating a combined company with approximately $12 billion in assets and 118 branches.

First Financial Bancorp Acquires BankFinancial Corporation

January 1, 2026

Financial Services

First Financial Bancorp completed its all-stock acquisition of Chicago-based BankFinancial Corporation, adding 18 retail financial centers and expanding First Financial’s presence in the Chicago market. The acquisition brings BankFinancial’s commercial lending, equipment finance and deposit franchise onto First Financial’s platform and increases the combined company’s assets to approximately $22 billion.

FB Financial Acquires Southern States Bancshares

June 30, 2025

Financial Services

FB Financial Corporation (parent of FirstBank) completed its merger with Southern States Bancshares, Inc., with Southern States shareholders receiving 0.800 shares of FB Financial common stock per share. The transaction implies an approximate equity value of $368.4 million and expands FB Financial's footprint into Alabama and Georgia; Southern States reported $2.9 billion in total assets as of March 31, 2025.

Northwest Bancshares Completes Acquisition of MutualFirst Financial (MutualBank)

April 24, 2020

Financial Services

On April 24, 2020 Northwest Bancshares, Inc. completed its acquisition of MutualFirst Financial, Inc., the holding company for MutualBank. The stock-for-stock merger (each MutualFirst share converted into 2.4 shares of Northwest) valued the deal at approximately $213.4 million; MutualBank brought ~$2.1 billion in assets and 36 full‑service offices in Indiana, expanding Northwest's footprint to roughly $12.8 billion in assets and 214 branches.

Byline Bancorp Completes Merger with First Security Bancorp

April 1, 2025

Financial Services

Byline Bancorp, Inc. completed its merger with First Security Bancorp, Inc., effective April 1, 2025, with First Security merged into Byline Bank. Under the terms, each share of First Security common stock was converted into 2.3539 shares of Byline common stock; the total merger consideration at closing was approximately $41.5 million and First Security preferred shares were redeemed for about $2.4 million. The transaction increases Byline's total assets to approximately $9.8 billion.

The First Bancshares Acquires Beach Bancorp, Inc.

April 26, 2022

Financial Services

The First Bancshares, Inc. (The First) entered into and completed a definitive agreement to acquire Beach Bancorp, Inc., the parent of Beach Bank, in an all‑stock transaction valued at approximately $116.7 million based on First Bancshares’ April 25, 2022 closing price. Beach Bank — which operates seven branches across the Florida panhandle and Tampa markets — was merged into The First Bank, expanding The First’s footprint in Northwest Florida and providing an entry into the Tampa market.