American Trust Bank
| Status: | Inactive as of 12/31/1998 |
| Merger - Without Assistance | |
| Successor Bank: | Keystone Financial Bank |
| Headquarters: | American Trust Bank 118 Baltimore Street Cumberland, MD 21502 |
| Established: | 11/13/1933 |
| FDIC Insurance: | 01/01/1934 |
| FDIC Cert: | #6770 |
| Charter Class: | Commercial bank, national (federal) charter and Fed member, supervised by the Office of the Comptroller of the Currency (OCC) |
| Total Assets: | $933,884,000 |
| Total Deposits: | $659,813,000 |
History
| 1933-11-13 | Institution established: Original name:The National Bank of Keyser | |
| 1992-12-07 | Changed name to American Trust Bank, West Virginia, National Association | |
| 1993-12-30 | Changed primary regulatory agency from COMPTROLLER OF THE CURRENCY to FEDERAL DEPOSIT INSURANCE CORPORATION | |
| 1993-12-30 | Changed name to American Trust Bank of West Virginia, Inc. | |
| 1996-02-01 | Changed name to American Trust Bank, National Association | |
| 1996-02-01 | Changed primary regulatory agency from FEDERAL DEPOSIT INSURANCE CORPORATION to COMPTROLLER OF THE CURRENCY | |
| 1996-02-01 | Acquired American Trust Bank (4858) in CUMBERLAND, MD | |
| 1996-02-01 | Moved bank headquarters from KEYSER, WV to CUMBERLAND, MD | |
| 1997-05-29 | Acquired First Federal Savings Bank of Western Maryland (27796) in CUMBERLAND, MD | |
| 1997-06-06 | Acquired Washington County National Bank (4876) in WILLIAMSPORT, MD | |
| 1998-12-31 | Changed name to Keystone Financial Bank, National Association (7712) | |
| 1998-12-31 | Acquired Keystone Bank, National Association (26007) in HORSHAM, PA | |
| 1998-12-31 | Acquired Financial Trust Company (8417) in CARLISLE, PA | |
| 1998-12-31 | Acquired Northern Central Bank (13754) in WILLIAMSPORT, PA | |
| 1998-12-31 | Acquired Keystone National Bank (34423) in LANCASTER, PA | |
| 1998-12-31 | Acquired Mid-State Bank and Trust Company (9896) in ALTOONA, PA | |
| 1998-12-31 | Merged into and subsequently operated as part of Keystone Financial Bank, National Association (7712) in HARRISBURG, PA | |
| 1999-08-20 | Acquired Key Trust Company (8410) in HORSHAM, PA | |
| 1999-08-20 | Acquired Financial Trust Services Company (34086) in CARLISLE, PA | |
| 2000-10-07 | Merged into and subsequently operated as part of Manufacturers and Traders Trust Company (588) in BUFFALO, NY | |
| 2001-02-10 | Acquired Premier National Bank (6964) in POUGHKEEPSIE, NY | |
| 2003-04-01 | Acquired Allfirst Bank (4822) in BALTIMORE, MD | |
| 2003-06-14 | Acquired Allfirst Trust Company National Association (34466) in MCLEAN, VA | |
| 2003-06-14 | Acquired Allfirst Trust Company of Pennsylvania, National Association (35482) in HARRISBURG, PA | |
| 2003-07-04 | Acquired Allfirst Financial Center National Association (23834) in MILLSBORO, DE | |
| 2007-11-30 | Acquired Partners Trust Municipal Bank (614) in UTICA, NY | |
| 2007-11-30 | Acquired Partners Trust Bank (16045) in UTICA, NY | |
| 2009-05-23 | Acquired Provident Bank of Maryland (15951) in BALTIMORE, MD | |
| 2009-08-28 | Acquired Bradford Bank (28312) in BALTIMORE, MD as part of a government assisted transaction. | |
| 2010-11-05 | Acquired K Bank (31263) in RANDALLSTOWN, MD as part of a government assisted transaction. | |
| 2015-11-01 | Acquired Hudson City Savings Bank (13074) in PARAMUS, NJ |