Ahmanson Bank and Trust Company
| Status: | Inactive as of 11/08/1976 |
| Merger - Without Assistance | |
| Successor Bank: | California Overseas Bank |
| Headquarters: | Ahmanson Bank and Trust Company 9145 Wilshire Boulevard Beverly Hills, CA 90210 |
| Established: | 11/25/1957 |
| FDIC Insurance: | 11/25/1957 |
| FDIC Cert: | #17814 |
| Charter Class: | Commercial bank, state charter and Fed nonmember, supervised by the FDIC |
History
| 1957-11-25 | Institution established: Original name:Ahmanson Bank and Trust Company | |
| 1976-11-08 | Merged into and subsequently operated as part of California Overseas Bank (22363) in BEVERLY HILLS, CA | |
| 1976-11-08 | Institution established: Original name:California Overseas Bank (22363) | |
| 1977-07-15 | Moved bank headquarters from BEVERLY HILLS, CA to LOS ANGELES, CA | |
| 1979-11-08 | Changed name to California Overseas Bank (19198) | |
| 1979-11-08 | Merged into and subsequently operated as part of California Overseas Bank (19198) in LOS ANGELES, CA | |
| 1992-05-15 | Acquired Century Bank (22454) in SAN FRANCISCO, CA | |
| 1997-10-10 | Moved bank headquarters from LOS ANGELES, CA to BEVERLY HILLS, CA | |
| 1999-12-31 | Merged into and subsequently operated as part of First Bank & Trust (20233) in NEWPORT BEACH, CA | |
| 2000-08-31 | Acquired Bank of Ventura (27171) in VENTURA, CA | |
| 2000-11-01 | Acquired Commercial Bank of San Francisco (21650) in SAN FRANCISCO, CA | |
| 2000-11-01 | Changed name to First Bank & Trust (18678) | |
| 2000-11-01 | Acquired First Bank Texas National Association (14618) in HOUSTON, TX | |
| 2000-11-01 | Acquired First Bank of California (32036) in SACRAMENTO, CA | |
| 2000-11-01 | Merged into and subsequently operated as part of First Bank & Trust (18678) in SAN FRANCISCO, CA | |
| 2000-12-29 | Acquired Millennium Bank (26877) in SAN FRANCISCO, CA | |
| 2001-03-29 | Merged into and subsequently operated as part of First Bank & Trust (22912) in SAN FRANCISCO, CA | |
| 2001-10-16 | Acquired Charter Pacific Bank (23422) in AGOURA HILLS, CA | |
| 2001-10-31 | Acquired BYL Bank Group (23063) in ORANGE, CA | |
| 2003-03-31 | Acquired First Bank & Trust (22912) in SAN FRANCISCO, CA | |
| 2003-03-31 | Acquired Bank of Ste. Genevieve (12469) in STE. GENEVIEVE, MO | |
| 2003-03-31 | Merged into and subsequently operated as part of First Bank (12229) in CREVE COEUR, MO | |
| 2004-07-30 | Acquired Continental Community Bank and Trust Company (17292) in AURORA, IL | |
| 2004-12-01 | Acquired CIB Bank (19171) in HILLSIDE, IL | |
| 2005-04-30 | Acquired First Bank of the Americas, S.S.B. (29791) in CHICAGO, IL | |
| 2005-09-30 | Acquired International Bank of California (21034) in LOS ANGELES, CA | |
| 2005-11-01 | Acquired Northway State Bank (35097) in GRAYSLAKE, IL | |
| 2006-01-25 | Acquired First National Bank of Sachse (25016) in SACHSE, TX | |
| 2006-04-29 | Acquired Community Bank of Pittsfield (35294) in PITTSFIELD, IL | |
| 2006-05-17 | Acquired First Independent National Bank (34638) in PLANO, TX | |
| 2006-08-16 | Acquired San Diego Community Bank (23158) in CHULA VISTA, CA | |
| 2006-09-01 | Acquired Oak Lawn Bank (35272) in OAK LAWN, IL | |
| 2007-03-01 | Acquired Royal Oaks Bank, ssb (57023) in HOUSTON, TX | |
| 2007-12-01 | Acquired Coast Bank of Florida (35397) in BRADENTON, FL |