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

Jun 7, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (PANL)
CIK: 0001005284
Period of Report: 2010-06-03

Reporting Person: BROWN JULIA J (Chief Technical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-06-03	Common Stock	M	2000	$8.56	Acquired	152106	Direct
2010-06-03	Common Stock	S	770	$18.28	Disposed	151336	Direct
2010-06-03	Common Stock	S	100	$18.2516	Disposed	151236	Direct
2010-06-03	Common Stock	S	406	$18.252	Disposed	150830	Direct
2010-06-03	Common Stock	S	100	$18.2513	Disposed	150730	Direct
2010-06-03	Common Stock	S	524	$18.24	Disposed	150206	Direct
2010-06-03	Common Stock	S	100	$18.2412	Disposed	150106	Direct
2010-06-04	Common Stock	M	13000	$8.56	Acquired	163106	Direct
2010-06-04	Common Stock	S	2000	$18.00	Disposed	161106	Direct
2010-06-04	Common Stock	S	2500	$18.08	Disposed	158606	Direct
2010-06-04	Common Stock	S	2500	$18.18	Disposed	156106	Direct
2010-06-04	Common Stock	S	1800	$18.37	Disposed	154306	Direct
2010-06-04	Common Stock	S	1200	$18.371	Disposed	153106	Direct
2010-06-04	Common Stock	S	3000	$18.35	Disposed	150106	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-06-03	Employee Stock Option (right to buy)	$8.56	M	2000	Disposed	2011-12-17	Common Stock (2000)	Direct
2010-06-04	Employee Stock Option (right to buy)	$8.56	M	13000	Disposed	2011-12-17	Common Stock (13000)	Direct