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

May 17, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (PANL)
CIK: 0001005284
Period of Report: 2010-05-13

Reporting Person: BECKER LEONARD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-13	Common Stock	S	397	$15.78	Disposed	41645	Direct
2010-05-13	Common Stock	S	100	$15.76	Disposed	41545	Direct
2010-05-13	Common Stock	S	1111	$15.75	Disposed	40434	Direct
2010-05-13	Common Stock	S	300	$15.70	Disposed	40134	Direct
2010-05-13	Common Stock	S	1604	$15.69	Disposed	38530	Direct
2010-05-14	Common Stock	S	100	$14.2525	Disposed	44918	Direct
2010-05-14	Common Stock	S	100	$14.248	Disposed	44818	Direct
2010-05-14	Common Stock	S	100	$14.245	Disposed	44718	Direct
2010-05-14	Common Stock	S	6188	$14.24	Disposed	38530	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-13	Stock Option (right to buy)	$10.375	M	3512	Disposed	2011-02-15	Common Stock (3512)	Direct
2010-05-14	Stock Option (right to buy)	$10.375	M	6488	Disposed	2011-02-15	Common Stock (6488)	Direct