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

Dec 8, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (PANL)
CIK: 0001005284
Period of Report: 2010-12-06

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-06	Common Stock	M	5000	$13.92	Acquired	17044	Direct
2010-12-06	Common Stock	S	1500	$29.80	Disposed	15544	Direct
2010-12-06	Common Stock	S	1500	$29.78	Disposed	14044	Direct
2010-12-06	Common Stock	S	2000	$29.75	Disposed	12044	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-06	Employee Stock Option (right to buy)	$13.92	M	5000	Disposed	2013-12-23	Common Stock (5000)	Direct