X0306 4 2021-05-12 0 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001438851 ELIAS RICHARD C C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING NJ 08618 1 0 0 0 Common Stock 2021-05-12 5 G 0 E 764 0.00 D 0 D Common Stock 2021-06-30 4 A 0 226 0.00 A 226 D Common Stock 2021-05-12 5 G 0 E 4200 0.00 D 4900 I By Revocable Trust Common Stock 2021-05-12 5 G 0 E 764 0.00 A 12649 I By Grantor Retained Annuity Trust Common Stock 2021-05-12 5 G 0 E 4200 0.00 A 16849 I By Grantor Retained Annuity Trust Reflects transfer from Mr. Elias to a grantor retained annuity trust on May 12, 2021. Reflects transfer from a revocable trust to a grantor retained annuity trust on May 12, 2021. /s/ Richard C. Elias (by Mauro Premutico as power of attorney) 2021-07-01