S&T BANCORP INC — Director's Dealing 2011

Feb 14, 2011

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: S&T BANCORP INC (STBA)
CIK: 0000719220
Period of Report: 2010-12-31

Reporting Person: RUDDOCK DAVID P (SR. EXECUTIVE VICE PRESIDENT)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-31	Common Stock	J	24	$19.25	Acquired	1553	Direct
2010-12-31	Common Stock	J	1754	$22.59	Acquired	21849	Indirect
2010-12-31	Common Stock	J	48560	—	Acquired	48560	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Options (Right to Buy)	$29.965	2013-12-15	Common Stock (10000)	10000	Direct
Stock Options (Right to Buy)	$37.08	2014-12-20	Common Stock (10000)	10000	Direct
Stock Options (Right to Buy)	$37.855	2015-12-19	Common Stock (10000)	10000	Direct

Footnotes

F1: Increase due to reinvested dividends in a dividend reinvestment plan.

F2: These shares represent the YTD increase in shares held in a 401K plan.

F3: Acting as co-executor of W Parker Ruddock Estate.