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

Dec 9, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (PANL)
CIK: 0001005284
Period of Report: 2010-12-07

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-07	Common Stock	F	4878	$29.02	Disposed	254062	Direct
2010-12-07	Common Stock	M	15000	$9.4375	Acquired	269062	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-07	Employee Stock Option (right to buy)	$9.4375	M	15000	Disposed	2010-12-14	Common Stock (15000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	176000	Indirect
Common Stock	21000	Indirect

Footnotes

F1: American Biomimetics Corporation, of which Mr. Seligsohn is the sole Director, Chairman, President and Secretary.

F2: The Seligsohn Foundation, of which Mr. Seligsohn is the sole trustee.