Rock County Savings and Trust Company
| Status: | Inactive as of 10/30/1989 |
| Merger - Without Assistance | |
| Successor Bank: | Johnson Bank |
| Headquarters: | Rock County Savings and Trust Company 2021 Holiday Drive Janesville, WI 53545 |
| Established: | 01/01/1912 |
| FDIC Insurance: | 01/01/1934 |
| FDIC Cert: | #2471 |
| Charter Class: | Commercial bank, state charter and Fed nonmember, supervised by the FDIC |
| Total Assets: | $49,701,000 |
| Total Deposits: | $44,833,000 |
History
| 1912-01-01 | Institution established: Original name:Rock County Savings and Trust Company | |
| 1989-10-30 | Merged into and subsequently operated as part of The Rock County National Bank of Janesville (5299) in JANESVILLE, WI | |
| 1993-03-31 | Changed name to Heritage Bank Rock County, National Association (5299) | |
| 1996-04-01 | Changed name to Heritage Bank, National Association (5299) | |
| 1998-02-06 | Changed name to Johnson Bank, National Association (5299) | |
| 1998-10-24 | Merged into and subsequently operated as part of Johnson Bank (20296) in RACINE, WI | |
| 2002-03-26 | Acquired Johnson Bank Hayward (21126) in HAYWARD, WI | |
| 2002-10-01 | Acquired Capital Bank (33857) in GREEN BAY, WI | |
| 2003-07-01 | Acquired Johnson Trust Company (33012) in RACINE, WI | |
| 2006-06-19 | Acquired Johnson Bank Arizona, National Association (26384) in PHOENIX, AZ |