X0306 4 2022-03-05 0 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001232978 ROSENBLATT SIDNEY D C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING NJ 08618 1 1 0 0 EVP and CFO Common Stock 2022-03-05 4 A 0 312 0.00 A 164400 D Common Stock 2022-03-05 4 F 0 132 156.07 D 164268 D Common Stock 2022-03-05 4 F 0 352 156.07 D 163916 D Common Stock 2022-03-06 4 F 0 5429 156.07 D 158487 D Common Stock 2022-03-06 4 F 0 3629 156.07 D 154858 D Common Stock 92275 I By Grantor Retained Annuity Trust Common Stock 13000 I By Spouse These shares were granted to the reporting person as performance units under the Company's Long Term Incentive Plan as part of his 2019 compensation and vested on March 5, 2022 subject to the satisfaction of certain performance conditions, which the Company's Human Capital Committee certified on February 16, 2022 as having occurred. These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2022 of 312 shares of restricted stock previously granted to the reporting person. These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2022 of 831 shares of restricted stock previously granted to the reporting person. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2022 of 12,800 shares of restricted stock previously granted to the reporting person. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2022 of 8,555 shares of restricted stock previously granted to the reporting person. /s/ Sidney D. Rosenblatt (by Mauro Premutico as power of attorney) 2022-03-08