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California Bank of Commerce, History
The following are major historical events for California Bank of Commerce, including mergers and acquisitions.
| 2001-12-18 | Institution established: Original name:Ramona National Bank | |
| 2006-11-15 | Changed name to First Business Bank, National Association | |
| 2008-01-14 | Moved bank headquarters from RAMONA, CA to SAN DIEGO, CA | |
| 2010-12-04 | Changed name to Bank of Southern California, N.A. | |
| 2014-11-07 | Acquired Frontier Bank, FSB (34738) in PALM DESERT, CA as part of a government assisted transaction. | |
| 2018-07-31 | Acquired Americas United Bank (58360) in GLENDALE, CA | |
| 2020-05-31 | Acquired Calwest Bank (35069) in RANCHO SANTA MARGARITA, CA | |
| 2021-10-01 | Acquired Bank of Santa ClaritaBank of Southern California, N.A. (57816) in SANTA CLARITA, CA. |