Security State Bank
| Status: | Inactive as of 11/06/2004 |
| Merger - Without Assistance | |
| Successor Bank: | Great Western Bank |
| Headquarters: | Security State Bank 2100 Commerce Red Oak, IA 51566 |
| Established: | 11/15/1950 |
| FDIC Insurance: | 11/15/1950 |
| FDIC Cert: | #16951 |
| Charter Class: | Commercial bank, state charter and Fed nonmember, supervised by the FDIC |
| Total Assets: | $61,355,000 |
| Total Deposits: | $52,767,000 |
History
| 1950-11-15 | Institution established: Original name:Security State Bank | |
| 1996-12-02 | Moved bank headquarters from STANTON, IA to RED OAK, IA | |
| 2004-11-06 | Merged into and subsequently operated as part of Great Western Bank (35516) in CLIVE, IA | |
| 2007-01-12 | Acquired Great Western Bank (8327) in OMAHA, NE | |
| 2007-01-12 | Merged into and subsequently operated as part of Great Western Bank (15289) in WATERTOWN, SD | |
| 2007-05-11 | Acquired Sunstate Bank (25333) in CASA GRANDE, AZ | |
| 2009-05-29 | Acquired International Bank (57223) in GREELEY, CO | |
| 2010-04-23 | Acquired F&M Bank-Iowa Central (10904) in MARSHALLTOWN, IA | |
| 2010-06-04 | Acquired TierOne Bank (29341) in LINCOLN, NE as part of a government assisted transaction. | |
| 2012-06-22 | Acquired First Federal Savings Bank of Iowa (30742) in FORT DODGE, IA | |
| 2016-05-16 | Acquired Home Federal Bank (28092) in SIOUX FALLS, SD | |
| 2017-07-05 | Moved bank headquarters from WATERTOWN, SD to SIOUX FALLS, SD |