First of Kansas Building and Savingsa
| Status: | Inactive as of 07/20/1989 |
| Merger - Assisted | |
| Successor Bank: | First of Kansas Savings, A Federal Savings and Loan Association |
| Headquarters: | First of Kansas Building and Savingsa 1200 East 27th Street Hays, KS 67601 |
| Established: | 01/01/1924 |
| FDIC Insurance: | 05/08/1936 |
| FDIC Cert: | #27777 |
| Charter Class: | |
| Total Assets: | $43,588,000 |
| Total Deposits: | $40,921,000 |
History
| 1924-01-01 | Institution established: Original name:Russell Savings Association | |
| 1985-05-31 | Changed name to First of Kansas Banking and Savings Association | |
| 1985-11-30 | Moved bank headquarters from RUSSELL, KS to HAYS, KS | |
| 1989-04-06 | Placed into government conservatorship. | |
| 1989-07-20 | Institution established: Original name:First of Kansas Savings, A Federal Savings and Loan Association (32693) | |
| 1989-07-20 | Failed. Acquired with government financial assistance and subsequently operated as part of First of Kansas Savings, A Federal Savings and Loan Association (32693) | |
| 1989-07-20 | Placed into government conservatorship. | |
| 1989-07-31 | Acquired | |
| 1990-06-01 | Acquired after government financial assistance and subsequently operated as part of First National Bank and Trust (4767) | |
| 1990-06-01 | Government conservatorship or bridge bank resolved. | |
| 1991-02-13 | Acquired The Farmers National Bank of Victoria (4790) in HAYS, KS | |
| 1991-09-03 | Moved bank headquarters from HAYS, KS to SALINA, KS | |
| 1992-03-27 | Changed from the Savings Association Insurance Fund to the Bank Insurance Fund. | |
| 1992-04-01 | Acquired The First State Bank & Trust Company (14114) in OSBORNE, KS | |
| 1992-04-01 | Acquired The Thomas County National Bank of Colby (4644) in COLBY, KS | |
| 1992-10-01 | Changed name to Sunflower Bank, National Association (4767) | |
| 1993-07-02 | Acquired City Bank and Trust Company (18580) in WICHITA, KS | |
| 1996-04-05 | Acquired The Peoples State Bank and Trust Company (12133) in ELLINWOOD, KS | |
| 1997-04-07 | Acquired Bank of the Southwest (20704) in DODGE CITY, KS | |
| 2001-11-07 | Acquired The First National Bank of Canon City, Colorado (2999) in CANON CITY, CO | |
| 2002-09-09 | Acquired Bank of Monte Vista (15556) in MONTE VISTA, CO | |
| 2004-07-08 | Acquired The Citizens State Bank, Liberal, Kansas (1145) in LIBERAL, KS | |
| 2005-04-07 | Acquired First National Bank - Colorado (3021) in FOWLER, CO | |
| 2010-01-22 | Acquired Bank of Leeton (8265) in LEETON, MO as part of a government assisted transaction. | |
| 2017-06-19 | Moved bank headquarters from SALINA, KS to DENVER, CO | |
| 2017-06-19 | Acquired The First National Bank of Santa Fe (2239) in ALBUQUERQUE, NM | |
| 2017-06-19 | Acquired Capital Bank, SSB (35322) in EL PASO, TX |