S&T BANCORP INC — Director's Dealing 2013

May 20, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: S&T BANCORP INC (STBA)
CIK: 0000719220
Period of Report: 2013-05-16

Reporting Person: SPADAFORA CHARLES A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-04-08	Common Stock	W	3600	—	Disposed	10800	Indirect
2013-04-08	Common Stock	W	3600	—	Acquired	3600	Indirect
2013-04-08	Common Stock	W	10800	—	Disposed	0	Indirect
2013-05-16	Common Stock	S	6500	$19.021	Disposed	0	Indirect
2013-05-16	Common Stock	S	6578	$19.021	Disposed	0	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7868	Direct
Common Stock	31241.901	Indirect
Common Stock	2000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Options (Right to Buy)	$29.965	2013-12-15	Common Stock (2500)	2500	Direct
Stock Options (Right to Buy)	$37.855	2015-12-19	Common Stock (2500)	2500	Direct
Stock Options (Right to Buy)	$37.08	2014-12-20	Common Stock (2500)	2500	Direct

Footnotes

F1: On April 08, 2013, the Reporting Person, as co-trustee of Cecil Spadafora Trust, distributed shares by will.

F2: On April 8, 2013, the Reporting Person, as co-trustee of Charles Spadafora Family Irrev Trust acquired shares by will.

F3: On April 08, 2013 the Reporting Person, as co-trustee of Cecil Spadafora's Trust distributed the remaining shares by will.