| 2025-11-11 | Farmers State Bank | CAMPBELL COUNTY BANK |
| 2023-10-07 | Dakota Prairie Bank | FIRST FIDELITY BANK |
| 2023-09-01 | FIRST CENTURY FEDERAL CREDIT UNION | VOYAGE FEDERAL CREDIT UNION |
| 2023-07-12 | Valley Exchange Bank | AMERICAN BANK & TRUST |
| 2023-05-01 | VERMILLION FEDERAL CREDIT UNION | VOYAGE FEDERAL CREDIT UNION |
| 2022-07-01 | DEPARTMENT STORES NATIONAL BANK | CITIBANK, N.A. |
| 2022-02-01 | Great Western Bank | FIRST INTERSTATE BANK |
| 2022-02-01 | GREAT WESTERN BANCORP, INC. | FIRST INTERSTATE BANCSYSTEM, INC. |
| 2021-06-09 | TCF National Bank | HUNTINGTON NATIONAL BANK, THE |
| 2021-06-01 | GOOD SAMARITAN FEDERAL CREDIT UNION | VOYAGE FEDERAL CREDIT UNION |
| 2020-10-31 | UNITED METHODIST FIRST CHOICE FEDERAL CREDIT UNION | INTERFAITH FEDERAL CREDIT UNION |
| 2020-10-17 | First Bank & Trust | FIRST BANK & TRUST |
| 2020-07-04 | First State Bank of Claremont | DACOTAH BANK |
| 2019-07-08 | Menno State Bank | CAMPBELL COUNTY BANK |
| 2018-12-15 | The Roberts County National Bank of Sisseton | FIRST SAVINGS BANK |
| 2018-12-01 | First American State Bank | FIRST NATIONAL BANK |
| 2018-11-17 | First State Bank | MINNWEST BANK |
| 2018-11-17 | Peoples State Bank | MINNWEST BANK |
| 2018-09-15 | First State Bank of Warner, S. Dak. | BANKNORTH |
| 2018-09-01 | SIMPLY SERVICE FEDERAL CREDIT UNION | HIGHMARK FEDERAL CREDIT UNION |
| 2018-07-01 | Farmers State Bank | AMERICAN BANK & TRUST |
| 2018-03-01 | GLACIAL LAKES EDUCATIONAL EMPLOYEES FEDERAL CREDIT UNION | AVANTI FEDERAL CREDIT UNION |
| 2018-01-01 | CONSOLIDATED HUB-CO FEDERAL CREDIT UNION | DAKOTALAND FEDERAL CREDIT UNION |
| 2017-11-18 | State Bank of Alcester | PREMIER BANK |
| 2017-09-25 | Miner County Bank | RIVERS EDGE BANK |
| 2016-07-01 | First State Bank | BANKWEST, INCORPORATED |
| 2016-05-16 | HF FINANCIAL CORP. | GREAT WESTERN BANCORP, INC. |
| 2016-05-16 | HOME FEDERAL BANK | Great Western Bank |
| 2016-01-01 | Dakota State Bank | FIRST DAKOTA NATIONAL BANK |
| 2015-08-15 | First Bank & Trust of Milbank | FIRST BANK & TRUST |
| 2015-08-01 | RAPID CITY TELCO FEDERAL CREDIT UNION | SENTINEL FEDERAL CREDIT UNION |
| 2015-07-01 | Fulton State Bank | FARMERS STATE BANK |
| 2015-04-01 | SODES FEDERAL CREDIT UNION | HEALTHCARE PLUS FEDERAL CREDIT UNION |
| 2014-10-17 | GREAT WESTERN BANCORPORATION, INC. | GREAT WESTERN BANCORP, INC. |
| 2014-10-09 | NATIONAL AMERICAS INVESTMENT, INC. | NATIONAL AMERICAS HOLDINGS LLC |
| 2014-07-28 | First National Bank South Dakota | FIRST NATIONAL BANK OF OMAHA |
| 2014-05-24 | Minnwest Bank Sioux Falls | MINNWEST BANK |
| 2014-05-17 | American State Bank of Pierre | AMERICAN BANK & TRUST |
| 2014-03-22 | The First National Bank of Volga | BANKSTAR FINANCIAL |
| 2013-12-31 | MITCHELL AREA FEDERAL CREDIT UNION | DAKOTALAND FEDERAL CREDIT UNION |
| 2013-10-01 | DAKOTA TERRITORY FEDERAL CREDIT UNION | NORTHERN HILLS FEDERAL CREDIT UNION |
| 2013-04-01 | Farmers State Bank | FIRST NATIONAL BANK IN PHILIP |
| 2013-03-01 | AIR GUARD FEDERAL CREDIT UNION | LEVO FEDERAL CREDIT UNION |
| 2013-03-01 | MITCHELL TEACHERS FEDERAL CREDIT UNION | PALACE CITY FEDERAL CREDIT UNION |
| 2013-01-19 | BANK 360 | FIRST DAKOTA NATIONAL BANK |
| 2012-12-08 | MANSFIELD STATE BANK | AMERICAN BANK & TRUST |
| 2012-11-01 | ASB BANK HOLDING COMPANY | LEACKCO BANK HOLDING COMPANY, INC. |
| 2012-11-01 | Dakota Heritage State Bank | SECURITY BANK MIDWEST |
| 2012-09-05 | CR COMMUNITY FIRST FEDERAL CREDIT UNION | BLACK HILLS FEDERAL CREDIT UNION |
| 2012-07-16 | YELLOWSTONE TRAIL BANCORPORATION | IPSWICH COMMUNITY BANCSHARES, INC. |
| 2012-05-05 | First Bank of White | FIRST BANK & TRUST |
| 2011-12-31 | TURTLE CREEK FEDERAL CREDIT UNION | DAKOTALAND FEDERAL CREDIT UNION |
| 2011-11-01 | FIRST DAKOTA FEDERAL CREDIT UNION | BLUESTONE FEDERAL CREDIT UNION |
| 2011-10-01 | INTERLAKES FEDERAL CREDIT UNION | DAKOTALAND FEDERAL CREDIT UNION |
| 2011-10-01 | Peoples State Bank | AMERICAN BANK & TRUST |
| 2011-10-01 | KINGSBURY BANK HOLDING COMPANY | LEACKCO BANK HOLDING COMPANY, INC. |
| 2011-08-01 | MIDWEST PARTNERS FEDERAL CREDIT UNION | VOYAGE FEDERAL CREDIT UNION |
| 2011-07-01 | CITIBANK (SOUTH DAKOTA), NATIONAL ASSOCIATION | CITIBANK, N.A. |
| 2011-01-01 | FARMERS STATE HOLDING COMPANY | FIRST STATE ASSOCIATES, INC. |
| 2010-12-31 | META TRUST COMPANY | First Bank & Trust |
| 2009-09-26 | First Western Bank | FIRST INTERSTATE BANK |
| 2009-09-26 | The First Western Bank Sturgis | FIRST INTERSTATE BANK |
| 2009-02-02 | Wells Fargo Financial Bank | WELLS FARGO BANK, NATIONAL ASSOCIATION |
| 2008-10-25 | Valley Bank (National Association) | LIBERTY NATIONAL BANK |
| 2008-07-01 | Langford State Bank | First State Bank of Claremont |
| 2007-05-01 | WELLS FARGO RURAL INSURANCE AGENCY, INC. | RURAL COMMUNITY INSURANCE AGENCY, INC. |
| 2007-04-01 | Farmers State Bank | FIRST NATIONAL BANK IN SIOUX FALLS, THE |
| 2007-01-13 | GREAT WESTERN SERVICE CORPORATION | Great Western Bank |
| 2007-01-01 | ADVANCED FINANCIAL SOLUTIONS LLC | ADVANCED FINANCIAL SOLUTIONS, INC. |
| 2006-10-01 | DAKOTA CATHOLIC FEDERAL CREDIT UNION | VOYAGE FEDERAL CREDIT UNION |
| 2006-10-01 | CITIBANK USA, NATIONAL ASSOCIATION | CITIBANK (SOUTH DAKOTA), NATIONAL ASSOCIATION |
| 2006-09-30 | The First Western Bank Custer | First Western Bank |
| 2006-05-31 | STURGIS COMMUNITY FEDERAL CREDIT UNION | SIMPLY SERVICE FEDERAL CREDIT UNION |
| 2006-02-04 | SECURITY BANK | Great Western Bank |
| 2005-12-31 | H&B FEDERAL CREDIT UNION | HB TELCO FEDERAL CREDIT UNION |
| 2005-12-31 | RAPID CITY JOURNAL EMPLOYEES FEDERAL CREDIT UNION | ASPEN FEDERAL CREDIT UNION |
| 2005-08-01 | MINER COUNTY FEDERAL CREDIT UNION | EAST RIVER FEDERAL CREDIT UNION |
| 2005-06-01 | SDSU-BROOKINGS FEDERAL CREDIT UNION | DAKOTALAND FEDERAL CREDIT UNION |
| 2005-01-06 | BANKFIRST CORPORATION, INC | MARSHALL BANKFIRST CORPORATION |
| 2004-10-01 | State Bank of Hudson | PREMIER BANK |
| 2004-07-01 | WATERTOWN RUBBER WORKERS FEDERAL CREDIT UNION | SIOUX VALLEY COOPERATIVE FEDERAL CREDIT UNION |
| 2004-04-15 | DACOTAH INSURANCE, LTD. | DACOTAH BANK |
| 2004-04-15 | DACOTAH INSURANCE, LTD. | DACOTAH BANK |
| 2004-02-20 | WELLS FARGO BANK SOUTH DAKOTA, NATIONAL ASSOCIATION | WELLS FARGO BANK, NATIONAL ASSOCIATION |
| 2004-02-18 | NICHOLS FINANCIAL, INC. | FIRST SLEEPY EYE BANCORPORATION, INC. |
| 2004-01-01 | NORTHERN PLAINS FEDERAL CREDIT UNION | VOYAGE FEDERAL CREDIT UNION |
| 2004-01-01 | FIRST WESTERN AGENCY, INC. | FIRST WESTERN AGENCY, LLC |
| 2004-01-01 | First Western Bank | First Western Bank |
| 2004-01-01 | AMERICAN BANK SHARES, INC. | First Western Bank |
| 2003-11-01 | JAMES RIVER VALLEY FEDERAL CREDIT UNION | AREA FEDERAL CREDIT UNION |
| 2003-11-01 | First State Bank of Sinai | CITIZENS STATE BANK OF ARLINGTON |
| 2003-10-01 | RUSHMORE NATIONAL LIFE INSURANCE COMPANY | AMERICAN MEMORIAL LIFE INSURANCE COMPANY |
| 2003-05-30 | Great Western Bank | Great Western Bank |
| 2003-03-01 | TEAMSTERS LOCAL 749 FEDERAL CREDIT UNION | SERVICE FIRST FEDERAL CREDIT UNION |
| 2002-09-28 | MARQUETTE TRUST COMPANY OF SOUTH DAKOTA, NATIONAL ASSOCIATION | WELLS FARGO BANK SOUTH DAKOTA, NATIONAL ASSOCIATION |
| 2002-06-14 | F&M INSURANCE AGENCY, INC. | WELLS FARGO INSURANCE, INC. |
| 2002-06-01 | CORPSTAR FEDERAL CREDIT UNION | EMPIRE CORPORATE FEDERAL CREDIT UNION |
| 2001-12-18 | F & M BANK HOLDING COMPANY OF VALLEY CITY, INC. | DACOTAH BANKS, INC. |
| 2001-10-31 | FIRST NATIONAL CREDIT CARD COMPANY | FIRST NATIONAL BANK |
| 2001-04-24 | MIKTOMM MORTGAGE CORPORATION | FBS MORTGAGE CORPORATION |