Form 13F-NT

Report for the Calendar Year or Quarter Ended
December 31, 2009
Check here if Amendment [  ]  Amendment Number:

   This Amendment  (Check only one [  ]  is a restatement.
                                   [  ]  adds new holdings
                                             entries

Institutional Investment Manager Filing this Report:

                          S & T Bancorp, Inc.
                          800 Philadelphia St.
                          Indiana, PA  15701

Form 13F File Number 28-0000719220
The institutional investment manager filing this report and
The person by whom it is signed hereby represent that the
person signing the report is authorized to submit it, that
all information contained herein is true, correct and
complete, and that it is understood that all required
items, statements, schedules, lists, and tables, are
considered integral parts of this form.

Person signing this Report on Behalf of Reporting Manager:

   Name:	Robert E. Rout
   Title:	Sr. Executive Vice President,
	Chief Financial Officer,
	Chief Administrative Officer
	& Secretary

   Phone:    724-465-4825

Signature, Place, and Date of Signing:

	/s/ Robert E. Rout

 	Indiana, PA
	January 25, 2010


Report Type
[ ] 13F HOLDINGS REPORT.(Check here if all holdings of this
    reporting manager are reported in this report.)

[X] 13F NOTICE. (Check here if no holdings reported are in
this report, and all holdings are reported by other
reporting manager(s).)

[ ] 13F COMBINATION REPORT.(Check here if a portion of the
    holdings for this reporting manager are reported in this
    report and a portion are reported by other reporting
    manager(s).)

List of Other Managers Reporting for this Manager:

   Form 13F File Number   Name

   28-0001010911          S & T Bank