X0306 4 2020-04-07 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 2020-04-07 4 A 0 4078 0.0 A 194264 D Common Stock 2020-04-07 4 F 0 1729 134.75 D 192535 D Common Stock 2020-04-07 4 F 0 21210 134.75 D 171325 D Common Stock 51955 I By Grantor Retained Annuity Trust 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 subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on April 7, 2020 as having occurred. Includes 62 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on March 31, 2020. These shares were withheld to satisfy a tax liability in connection with the vesting on April 7, 2020 of 4,078 shares of restricted stock previously granted to Mr. Abramson. These shares were withheld to satisfy a tax liability in connection with the vesting on April 7, 2020 of 50,000 shares of restricted stock previously granted to Mr. Abramson. /s/ Steven V. Abramson (by Mauro Premutico as power of attorney) 2020-04-09