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: SELIGSOHN SHERWIN I (Director, Chairman of Board and Founder)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-10-19	Common Stock	G	21000	—	Disposed	240663	Direct
2010-01-06	Common Stock	A	12702	—	Acquired	253365	Direct
2010-01-06	Common Stock	F	4176	$14.17	Disposed	249189	Direct
2010-01-06	Common Stock	A	14114	—	Acquired	263303	Direct
2010-01-06	Common Stock	F	1944	$14.17	Disposed	261359	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	176000	Indirect
Common Stock	21000	Indirect

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 6,587 shares of restricted stock previously granted to Mr. Seligsohn.

F4: American Biomimetics Corporation, of which Mr. Seligsohn is the sole Director, Chairman, President and Secretary.

F5: The Seligsohn Foundation, of which Mr. Seligsohn is the sole trustee.