FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Premutico Mauro   2. Issuer Name and Ticker or Trading Symbol UNIVERSAL DISPLAY CORP \PA\ [OLED] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP, Legal & GM, Licensing (Last) (First) (Middle) C/O UNIVERSAL DISPLAY CORPORATION, 375 PHILLIPS BLVD. 3. Date of Earliest Transaction (Month/Day/Year) 09/04/2018 (Street) EWING, NJ 08618 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 09/04/2018   S   200 (1) D $ 121.65 (2) 83,746 (3) D   Common Stock 09/04/2018   S   4,450 (1) D $ 123.1466 (4) 79,296 D   Common Stock 09/04/2018   S   4,999 (1) D $ 124.037 (5) 74,297 D   Common Stock 09/04/2018   S   395 (1) D $ 124.8082 (6) 73,902 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Premutico Mauro C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING, NJ 08618			VP, Legal & GM, Licensing

Signatures

/s/ Mauro Premutico		09/06/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	These shares were sold pursuant to a Rule 10b5-1 Non-Discretionary Trading Plan previously entered into by Mr. Premutico.
(2)	Represents the weighted average of a range of sale prices from $121.20 to $122.10. The reporting person undertakes to provide to the Staff of the Securites 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.
(3)	Includes 93 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on June 30, 2018.
(4)	Represents the weighted average of a range of sale prices from $122.55 to $123.55. The reporting person undertakes to provide to the Staff of the Securites 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.
(5)	Represents the weighted average of a range of sale prices from $123.60 to $124.55. The reporting person undertakes to provide to the Staff of the Securites 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.
(6)	Represents the weighted average of a range of sale prices from $124.65 to $125.15. The reporting person undertakes to provide to the Staff of the Securites 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.

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