Frontier Federal Savings Bank
| Status: | Inactive as of 11/29/1990 |
| Pass Through Receivership Merger Conservatorship Institution Resolved | |
| Successor Bank: | Union Bank of Illinois |
| Headquarters: | Frontier Federal Savings Bank 401 South Illinois Street Belleville, IL 62220 |
| Established: | 01/18/1990 |
| FDIC Insurance: | 01/18/1990 |
| FDIC Cert: | #32870 |
| Charter Class: | Savings banks, state charter, supervised by the FDIC |
| Total Assets: | $33,128,000 |
| Total Deposits: | $35,902,000 |
History
| 1990-01-18 | Institution established: Original name:Frontier Federal Savings Bank | |
| 1990-01-18 | Acquired Frontier Financial (27765) in BELLEVILLE, IL | |
| 1990-11-29 | Acquired after government financial assistance and subsequently operated as part of Union Bank of East St. Louis (1038) | |
| 1990-11-29 | Government conservatorship or bridge bank resolved. | |
| 1990-12-06 | Changed name to Union Bank of Illinois (1038) | |
| 1991-05-24 | Moved bank headquarters from BELLEVILLE, IL to SWANSEA, IL | |
| 1995-08-31 | Changed primary regulatory agency from OFFICE OF THRIFT SUPERVISION to FEDERAL RESERVE BOARD | |
| 2001-12-31 | Acquired The State Bank of Jerseyville (11749) in JERSEYVILLE, IL | |
| 2001-12-31 | Acquired Union Bank of Illinois (1038) in SWANSEA, IL | |
| 2001-12-31 | Merged into and subsequently operated as part of First Bank (12229) in CREVE COEUR, MO | |
| 2002-01-15 | Acquired PlainsBank of Illinois, National Association (17810) in DES PLAINES, IL | |
| 2003-03-31 | Acquired Bank of Ste. Genevieve (12469) in STE. GENEVIEVE, MO | |
| 2003-03-31 | Acquired First Bank & Trust (22912) in SAN FRANCISCO, CA | |
| 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 |