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: 2015-05-20

Reporting Person: ROSENBLATT SIDNEY D (Director, EVP and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-20	Common Stock	M	25000	$10.51	Acquired	501703	Direct
2015-05-20	Common Stock	S	25000	$52.04	Disposed	476703	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-20	Employee Stock Option (right to buy)	$10.51	M	25000	Disposed	2015-12-30	Common Stock (25000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	43028	Indirect
Common Stock	3250	Indirect
Common Stock	110836	Indirect

Footnotes

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

F2: Represents the weighted average of a range of sale prices per share from $52.00 to $52.10. 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: These shares are held by Mr. Rosenblatt's children and are being reported as beneficially owned by him.

F4: These shares are held by the Rosenblatt Family Limited Partnership, a limited partnership of which he is the sole general partner and he and his children are the sole limited partners.