| 2026-02-01 | FIRST CITIZENS BANK OF BUTTE | FRONTIER CREDIT UNION |
| 2025-06-01 | HIGH PEAKS FEDERAL CREDIT UNION | SOUTHWEST MONTANA COMMUNITY FEDERAL CREDIT UNION |
| 2025-01-11 | Stockmens Bank | CITIZENS ALLIANCE BANK |
| 2024-07-01 | MM EMPLOYEES FEDERAL CREDIT UNION | MONTANA EDUCATORS' CREDIT UNION |
| 2023-11-01 | MONTANA HEALTH FEDERAL CREDIT UNION | INTREPID CREDIT UNION |
| 2023-07-15 | Rocky Mountain Bank | HTLF Bank |
| 2023-07-01 | MILES CITY FEDERAL CREDIT UNION | VALLEY FINANCIAL CREDIT UNION |
| 2023-06-03 | Granite Mountain Bank Inc dba Granite Mountain Bank | CITIZENS ALLIANCE BANK |
| 2023-02-01 | BEAR PAW CREDIT UNION | ALTANA FEDERAL CREDIT UNION |
| 2022-08-01 | EMBARK FEDERAL CREDIT UNION | HORIZON CREDIT UNION |
| 2022-04-30 | First Community Bank | OPPORTUNITY BANK OF MONTANA |
| 2022-04-30 | FIRST COMMUNITY BANCORP, INC. | EAGLE BANCORP MONTANA, INC. |
| 2021-09-18 | 1st Bank | YELLOWSTONE BANK, THE |
| 2020-10-10 | Beartooth Bank | BRAVERA BANK |
| 2020-05-16 | First Citizens Bank of Polson, National Association | UNITY BANK |
| 2020-01-31 | BEARTOOTH FINANCIAL CORPORATION | BRAVERA HOLDINGS CORP. |
| 2020-01-01 | WESTERN HOLDING COMPANY OF WOLF POINT | EAGLE BANCORP MONTANA, INC. |
| 2020-01-01 | Western Bank of Wolf Point | OPPORTUNITY BANK OF MONTANA |
| 2019-10-19 | Prairie Mountain Bank | BRAVERA BANK |
| 2019-10-05 | First Security Bank of Malta | BANK OF BRIDGER, NATIONAL ASSOCIATION |
| 2019-10-05 | Valley Bank | BANK OF BRIDGER, NATIONAL ASSOCIATION |
| 2019-10-01 | HOMESTEAD FEDERAL CREDIT UNION | ALTANA FEDERAL CREDIT UNION |
| 2019-09-01 | SHELBY COMMUNITY FEDERAL CREDIT UNION | 1ST LIBERTY FEDERAL CREDIT UNION |
| 2019-03-30 | KOOTENAI VALLEY FEDERAL CREDIT UNION | MOUNTAIN WEST FEDERAL CREDIT UNION |
| 2019-01-01 | BIG MUDDY BANCORP, INC. | EAGLE BANCORP MONTANA, INC. |
| 2019-01-01 | BIG SKY FEDERAL CREDIT UNION | BILLINGS FEDERAL CREDIT UNION |
| 2019-01-01 | The State Bank of Townsend | OPPORTUNITY BANK OF MONTANA |
| 2018-09-29 | FALLON COUNTY FEDERAL CREDIT UNION | GRASSLANDS FEDERAL CREDIT UNION |
| 2018-03-01 | First Security Bank | GLACIER BANK |
| 2018-03-01 | INTER-MOUNTAIN BANCORP., INC. | GLACIER BANCORP, INC. |
| 2018-02-01 | TWINCO, INC. | EAGLE BANCORP MONTANA, INC. |
| 2018-02-01 | Ruby Valley Bank | OPPORTUNITY BANK OF MONTANA |
| 2017-12-09 | Dutton State Bank | The State Bank of Townsend |
| 2017-01-21 | Montana State Bank | BANK OF BRIDGER, NATIONAL ASSOCIATION |
| 2017-01-01 | S.B.T. FINANCIAL, INC. | BIG MUDDY BANCORP, INC. |
| 2016-10-29 | Teton Banks | First Security Bank |
| 2016-10-01 | HERITAGE FEDERAL CREDIT UNION, THE | ROCKY MOUNTAIN CREDIT UNION |
| 2016-09-01 | Treasure State Bank | GLACIER BANK |
| 2016-08-13 | Flathead Bank of Bigfork, Montana | FIRST INTERSTATE BANK |
| 2016-06-13 | GLACIER ANTELOPE COURT, LLC | COMMUNITY AFFORDABLE HOUSING FUND, LLC |
| 2016-04-23 | First Bank of Lincoln | CITIZENS ALLIANCE BANK |
| 2016-01-01 | UNITED - INTERSTATE CENTER PARTNERSHIP | BILLINGS 401, LLC |
| 2015-12-31 | ANNACO INVESTMENT MANAGEMENT | STOCKMAN WEALTH MANAGEMENT, INC. |
| 2015-08-01 | ELKHORN FEDERAL CREDIT UNION | INTREPID CREDIT UNION |
| 2015-07-25 | United Bank | FIRST INTERSTATE BANK |
| 2015-07-25 | ABSAROKEE BANCORPORATION, INC. | FIRST INTERSTATE BANCSYSTEM, INC. |
| 2015-06-12 | TETON BANCSHARES, INC. | INTER-MOUNTAIN BANCORP., INC. |
| 2015-05-02 | Farmers State Bank of Denton, Montana | Dutton State Bank |
| 2015-04-11 | Lake County Bank | VALLEY BANK OF RONAN |
| 2015-03-01 | EDTECH FEDERAL CREDIT UNION | HORIZON CREDIT UNION |
| 2015-02-28 | Community Bank, Inc. | GLACIER BANK |
| 2015-02-28 | MONTANA COMMUNITY BANKS, INC. | GLACIER BANCORP, INC. |
| 2015-02-24 | W.C. EDWARDS HOLDING CO., INC. | BIG MUDDY BANCORP, INC. |
| 2015-02-21 | GLENDIVE P E FEDERAL CREDIT UNION | BADLANDS FEDERAL CREDIT UNION |
| 2015-01-01 | West One Bank | TRAILWEST BANK |
| 2014-12-31 | BASIN STATE INSURANCE, LLC | STOCKMAN INSURANCE, INC. |
| 2014-10-18 | Mountain West Bank, National Association | FIRST INTERSTATE BANK |
| 2014-08-01 | MOUNTAIN WEST FINANCIAL CORP. | FIRST INTERSTATE BANCSYSTEM, INC. |
| 2014-07-12 | Basin State Bank | STOCKMAN BANK OF MONTANA |
| 2014-07-01 | GATEWAY COMMUNITY FEDERAL CREDIT UNION | PARK SIDE FINANCIAL CREDIT UNION |
| 2014-06-06 | BIG SKY HOLDING COMPANY | STOCKMAN FINANCIAL CORPORATION |
| 2014-04-26 | First Valley Bank | CITIZENS ALLIANCE BANK |
| 2013-10-05 | Community First Bank of Glendive | BRAVERA BANK |
| 2012-08-03 | MONTANA FIRST CREDIT UNION | HORIZON CREDIT UNION |
| 2012-07-14 | State Bank & Trust Co. | BANK OF COMMERCE, THE |
| 2012-06-30 | Community Bank - Missoula | Community Bank, Inc. |
| 2012-05-01 | Western Security Bank | GLACIER BANK |
| 2012-05-01 | Big Sky Western Bank | GLACIER BANK |
| 2012-05-01 | First Security Bank of Missoula | GLACIER BANK |
| 2012-05-01 | First Bank of Montana | GLACIER BANK |
| 2012-05-01 | Valley Bank of Helena | GLACIER BANK |
| 2012-01-01 | RAVALLI COUNTY BANKSHARES, INC. | BITTERROOT HOLDING COMPANY |
| 2012-01-01 | TREASURE STATE CORPORATE CREDIT UNION | MILLENNIUM CORPORATE CREDIT UNION |
| 2012-01-01 | Ravalli County Bank | TRAILWEST BANK |
| 2010-05-29 | CARTER COUNTY FEDERAL CREDIT UNION | COMMUNITY 1ST FEDERAL CREDIT UNION |
| 2010-02-20 | The First National Bank of Fairfield | Teton Banks |
| 2010-02-20 | CHOTEAU BANCORPORATION, INC. | TETON BANCSHARES, INC. |
| 2009-08-29 | The First National Bank of Ekalaka | SUMMIT NATIONAL BANK |
| 2009-08-14 | First Boulder Valley Bank | MADISON VALLEY BANK |
| 2009-05-30 | MONTANA STATE HOSPITAL CREDIT UNION | EDTECH FEDERAL CREDIT UNION |
| 2009-04-04 | Mountain West Bank of Kalispell, National Association | Mountain West Bank, National Association |
| 2009-03-03 | SUMMIT CREDIT UNION | ALTANA FEDERAL CREDIT UNION |
| 2008-12-31 | HILLSBORO HOLDINGS, INC. | HILLSBORO BANCSHARES, INC. |
| 2008-07-26 | The Continental National Bank of Harlowton | CITIZENS BANK & TRUST COMPANY |
| 2008-07-01 | MISSION ARTS EMPLOYEES FEDERAL CREDIT UNION | NORTHWESTERN ENERGY EMPLOYEES FEDERAL CREDIT UNION |
| 2008-06-01 | ELECTRIC CITY FEDERAL CREDIT UNION | 1ST LIBERTY FEDERAL CREDIT UNION |
| 2008-05-01 | Glacier Bank of Whitefish | GLACIER BANK |
| 2008-01-01 | COMMUNITY FEDERAL CREDIT UNION, THE | MONTANA FEDERAL CREDIT UNION |
| 2007-08-01 | FLATHEAD CREDIT UNION | PARK SIDE FINANCIAL CREDIT UNION |
| 2007-06-22 | Western Bank of Chinook National Association | First Bank of Montana |
| 2007-02-06 | UNITED FINANCIAL CORP. | U.S. BANCORP |
| 2007-02-06 | HeritageBank | U.S. BANK NATIONAL ASSOCIATION |
| 2007-01-29 | FLATHEAD SCHOOL EMPLOYEES FEDERAL CREDIT UNION | PARK SIDE FINANCIAL CREDIT UNION |
| 2007-01-27 | FIRST CITIZENS BANK, NATIONAL ASSOCIATION | GLACIER BANK |
| 2007-01-27 | First Citizens Bank of Billings | Western Security Bank |
| 2007-01-27 | Citizens' State Bank | First Security Bank of Missoula |
| 2006-10-01 | CITIZENS DEVELOPMENT COMPANY | GLACIER BANCORP, INC. |
| 2006-10-01 | TRI VALLEY COMMUNITY FEDERAL CREDIT UNION | VOCAL CREDIT UNION |
| 2005-11-30 | UNION LABOR FEDERAL CREDIT UNION | RIMROCK CREDIT UNION |
| 2005-11-01 | THOMPSON FALLS HOLDING COMPANY | GLACIER BANCORP, INC. |