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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

ROSENBLATT SIDNEY D 		2. Issuer Name and Ticker or Trading Symbol

UNIVERSAL DISPLAY CORP PA [ OLED ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
EVP and CFO
(Last)          (First)          (Middle)

C/O UNIVERSAL DISPLAY CORPORATION, 375 PHILLIPS BLVD. 		3. Date of Earliest Transaction (MM/DD/YYYY)

11/8/2017
(Street)

EWING, NJ 08618
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   11/8/2017     S    15006   (1) D $167.5025   (2) 277425   (3) D  
 
Common Stock   11/8/2017     S    3689   (1) D $168.3062   (4) 273736   D  
 
Common Stock   11/8/2017     S    1305   (1) D $169.4705   (5) 272431   D  
 
Common Stock                  66614   I   By Grantor Retained Annuity Trust  
Common Stock   11/8/2017     S    25245   (6) D $167.6495   (2) 55351   I   By Family Limited Partnership   (7)
Common Stock   11/8/2017     S    3691   (6) D $168.3061   (4) 51660   I   By Family Limited Partnership  
Common Stock   11/8/2017     S    1304   (6) D $169.4703   (5) 50356   I   By Family Limited Partnership  
Common Stock                  23000   (8) I   By Spouse  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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

Explanation of Responses:
(1)  These shares were sold pursuant to a Rule 10b5-1 Non-Discretionary Trading Plan previously entered into by Mr. Rosenblatt.
(2)  Represents the weighted average of a range of sale prices from $167.00 to $168.00. The reporting person undertakes to provide to the Staff of 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.
(3)  Includes 17 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on September 30, 2017.
(4)  Represents the weighted average of a range of sale prices from $168.025 to $169.00. The reporting person undertakes to provide to the Staff of 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.
(5)  Represents the weighted average of a range of sale prices from $169.05 to $169.825. The reporting person undertakes to provide to the Staff of 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.
(6)  These shares were sold pursuant to a Rule 10b5-1 Non-Discretionary Trading Plan previously entered into by the Rosenblatt Family Limited Partnership.
(7)  These shares are held by the Rosenblatt Family Limited Partnership, a limited partnership of which Mr. Rosenblatt is the sole general partner and he and his children are the sole limited partners.
(8)  These shares are held by Mr. Rosenblatt's spouse and are being reported as beneficially owned by him.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
ROSENBLATT SIDNEY D
C/O UNIVERSAL DISPLAY CORPORATION
375 PHILLIPS BLVD.
EWING, NJ 08618 		X
EVP and CFO

Signatures
/s/ Sidney. D. Rosenblatt 11/9/2017
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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