UNIVERSAL DISPLAY CORP \PA\ — Director's Dealing 2010

Sep 3, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (PANL)
CIK: 0001005284
Period of Report: 2010-09-01

Reporting Person: Hack Michael G (GM OLED Lighting & Displays,VP)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-09-01	Common Stock	M	5000	$10.3125	Acquired	16635	Direct
2010-09-01	Common Stock	S	2500	$20.50	Disposed	14135	Direct
2010-09-01	Common Stock	S	2500	$20.60	Disposed	11635	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-09-01	Employee Stock Option (right to buy)	$10.3125	M	5000	Disposed	2011-03-30	Common Stock (5000)	Direct