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

Dec 14, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (OLED)
CIK: 0001005284
Period of Report: 2015-12-10

Reporting Person: HARTLEY C KEITH (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-12-10	Common Stock	M	14150	$10.51	Acquired	87199	Direct
2015-12-10	Common Stock	S	14150	$55.81	Disposed	73049	Direct
2015-12-11	Common Stock	M	10850	$10.51	Acquired	83899	Direct
2015-12-11	Common Stock	S	10850	$53.34	Disposed	73049	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-12-10	Non Employee Stock Option (right to buy)	$10.51	M	14150	Disposed	2015-12-30	Common Stock (14150)	Direct
2015-12-11	Non Employee Stock Option (right to buy)	$10.51	M	10850	Disposed	2015-12-30	Common Stock (10850)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	23528	Indirect

Footnotes

F1: Represents the weighted average of a range of sale prices per share from $55.50 to $55.91. 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 seperate price.

F2: Represents the weighted average of a range of sale prices per share from $53.11 to $53.45. 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 seperate price.

F3: Mr. Hartley's Defined Benefit Pension Plan.