X0306 4 2021-01-27 0 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001553052 Premutico Mauro C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING NJ 08618 0 1 0 0 VP, Legal & GM, Licensing Common Stock 2021-01-27 5 G 0 E 9351 0.00 D 40015 D Common Stock 2021-03-02 4 A 0 10070 0.00 A 50085 D Common Stock 2021-03-05 4 F 0 215 189.08 D 49870 D Common Stock 2021-03-06 4 F 0 258 189.08 D 49612 D Common Stock 2021-03-06 4 A 0 354 0.00 A 49966 D Common Stock 2021-03-06 4 F 0 210 189.08 D 49756 D Common Stock 2021-03-06 4 F 0 2539 189.08 D 47217 D Common Stock 2021-01-27 5 G 0 E 9351 0.00 A 9351 I By Grantor Retained Annuity Trust Reflects transfer to a grantor retained annuity trust on January 27, 2021. Includes 31 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on September 30, 2020. These units were granted to Mr. Premutico under the Company's Long Term Incentive Plan as part of his 2021 compensation and are subject to a time-based restriction, with one-third of the total unit amount vesting on each of March 2, 2022, 2023, and 2024. These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2021 of 395 shares of restricted stock previously granted to Mr. Premutico. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 471 shares of restricted stock previously granted to Mr. Premutico. These shares were granted to Mr. Premutico as performance units under the Company's Long Term Incentive Plan as part of his 2018 compensation and vested on March 6, 2021 subject to the satisfaction of certain performance conditions, which our Human Capital Committee certified on February 16, 2021 as having occurred. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 354 shares of restricted stock previously granted to Mr. Premutico. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 4,620 shares of restricted stock previously granted to Mr. Premutico. /s/ Mauro Premutico 2021-03-09