X0508 4 2023-08-09 0 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001438851 ELIAS RICHARD C C/O UNIVERSAL DISPLAY CORPORATION 250 PHILLIPS BLVD. EWING NJ 08618 1 0 0 0 0 Common Stock 2336 D Common Stock 2023-08-09 4 S 0 986 157.21 D 6781 I By Family Trust Common Stock 2023-08-09 4 S 0 1014 158.14 D 5767 I By Family Trust Common Stock 2781 I By Grantor Retained Annuity Trust Common Stock 543 I By Grandchild Trust Common Stock 5680 I By Gift Trust Represents the weighted average of a range of sale prices from $156.69 to $157.65. The Reporting Person undertakes to provide to the staff of the U.S. 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. Represents the weighted average of a range of sale prices from $157.78 to $158.23. The Reporting Person undertakes to provide to the staff of the U.S. 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. /s/ Richard C. Elias (by Mauro Premutico as power of attorney) 2023-08-11