S&T Bank, History
The following are major historical events for S&T Bank, including mergers and acquisitions.
| 1902-05-21 | Institution established: Original name:The Savings & Trust Company of Indiana | |
| 1945-07-16 | Changed primary regulatory agency from FEDERAL DEPOSIT INSURANCE CORPORATION to FEDERAL RESERVE BOARD | |
| 1945-07-16 | Changed institution class to INSURED COMMERCIAL OR SAVINGS BANKS, STATE, MEMBERS FRS | |
| 1970-02-16 | Acquired Farmers' & Miners' Trust Company (6037) in PUNXSUTAWNEY, PA | |
| 1975-03-21 | Changed name to The Savings & Trust Company of Pennsylvania | |
| 1983-04-01 | Acquired UniBank (14243) in BROOKVILLE, PA | |
| 1986-05-01 | Acquired Homer City State Bank (13284) in HOMER CITY, PA | |
| 1987-07-01 | Acquired The Union Banking & Trust Company of Du Bois, Pennsylvania (690) in DU BOIS, PA | |
| 1991-01-11 | Changed name to S&T Bank | |
| 1991-07-05 | Acquired Vanguard Savings Bank, FSB (32950) in VANDERGRIFT, PA | |
| 1997-05-02 | Acquired Peoples Bank of Unity (6027) in PLUM BOROUGH, PA | |
| 2002-09-07 | Acquired PFC Bank (6038) in FORD CITY, PA | |
| 2008-06-07 | Acquired Irwin Bank (8423) in IRWIN, PA | |
| 2012-03-10 | Acquired Mainline National Bank (16171) in PORTAGE, PA | |
| 2013-02-09 | Acquired Gateway Bank (57615) in MC MURRAY, PA | |
| 2015-05-08 | Acquired Integrity Bank (57557) in CAMP HILL, PA | |
| 2019-11-30 | Acquired DNB First, National Association (7464) in DOWNINGTOWN, PA |