UNIVERSAL DISPLAY CORP \PA\ — Director's Dealing 2015

May 21, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (OLED)
CIK: 0001005284
Period of Report: 2015-05-19

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-19	Common Stock	S	13739	$51.29	Disposed	263954	Direct
2015-05-19	Common Stock	S	6261	$51.76	Disposed	257693	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	21000	Indirect
Common Stock	136000	Indirect

Footnotes

F1: These shares were sold pursuant to a Rule 10b5-1Non-Discretionary Trading Plan previously entered into by Mr. Seligsohn.

F2: Represents the weighted average of a range of sale prices per share from $50.64 to $51.63. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F3: Represents the weighted average of a range of sale prices per share from $51.65 to $51.88. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F4: The Seligsohn Foundation, of which Mr. Seligsohn is the sole trustee.

F5: American Biomimetics Corporation, of which Mr. Seligsohn is the sole Director, Chairman, President and Secretary.