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

Jan 8, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (PANL)
CIK: 0001005284
Period of Report: 2010-01-06

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-01-06	Common Stock	A	5398	—	Acquired	15843	Direct
2010-01-06	Common Stock	F	2289	$14.17	Disposed	13554	Direct
2010-01-06	Common Stock	A	4446	—	Acquired	18000	Direct
2010-01-06	Common Stock	F	823	$14.17	Disposed	17177	Direct

Footnotes

F1: These shares were withheld to satisfy a tax liability.

F2: These shares are subject to a vesting restriction, with one-third of the total share amount vesting on each of January 6, 2011, 2012 and 2013.

F3: These shares were withheld to satisfy a tax liability in connection with the vesting, on January 6, 2010, of 2,075 shares of restricted stock previously granted to Dr. Hack.