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) 03/06/2018 (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 03/06/2018   A   1,415 (1) A $ 0 91,635 D   Common Stock 03/06/2018   A   3,038 (2) A $ 0 94,673 D   Common Stock 03/06/2018   F   1,624 (3) D $ 122.15 93,049 D   Common Stock 03/07/2018   F   258 (4) D $ 124.6 92,791 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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		03/08/2018
**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 units were granted to Mr. Premutico under the Company's Long Term Incentive Plan as part of his 2018 compensation and are subject to a time-based vesting restriction, with one-third of the total unit amount vesting on each of March 6, 2019, 2020, and 2021.
(2)	These shares were granted to Mr. Premutico as performance units under the Company's Long Term Incentive Plan as part of his 2015 compensation and vested subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on March 6, 2018 as having occurred.
(3)	These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2018 of 3,038 shares of restricted stock previously granted to Mr. Premutico.
(4)	These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2018 of 486 shares of restricted stock previously granted to Mr. Premutico.

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