X0306 4 2020-03-05 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001232980 ABRAMSON STEVEN V C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING NJ 08618 1 1 0 0 President and CEO Common Stock 2020-03-05 4 F 0 349 160.13 D 163104 D Common Stock 2020-03-06 4 F 0 420 155.850 D 162684 D Common Stock 2020-03-06 4 A 0 25666 0.0 A 188350 D Common Stock 2020-03-07 4 F 0 576 155.85 D 187774 D Common Stock 2020-03-07 4 A 0 4080 0.0 A 191854 D Common Stock 2020-03-07 4 F 0 1730 155.85 D 190124 D Common Stock 51955 I By Grantor Retained Annuity Trust These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2020 of 831 shares of restricted stock previously granted to Mr. Abramson. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2020 of 992 shares of restricted stock previously granted to Mr. Abramson. These units were granted to Mr. Abramson under the Company's Long Term Incentive Plan as part of his 2020 compensation and are subject to a time-based restriction, with one-third of the total unit amount vesting on each of March 6, 2021, 2022, and 2023. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2020 of 1,359 shares of restricted stock previously granted to Mr. Abramson. These shares were granted to Mr. Abramson as performance units under the Company's Long Term Incentive Plan as part of his 2017 compensation and vested on March 7, 2020 subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on February 13, 2020 as having occurred. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2020 of 4,080 shares of restricted stock previously granted to Mr. Abramson. /s/ Steven V. Abramson (by Mauro Premutico as power of attorney) 2020-03-09