X0306 4 2019-03-26 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 2019-03-26 4 A 0 2040 0 A 77053 D Common Stock 2019-03-26 4 F 0 1085 156.04 D 75968 D These shares were granted to Mr. Premutico as performance units under the Company's Long Term Incentive Plan as part of his 2016 compensation and vested subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on March 26, 2019 as having occurred. These shares were withheld to satisfy a tax liability in connection with the vesting on March 26, 2019 of 2,040 shares of restricted stock previously granted to Mr. Premutico. /s/ Mauro Premutico 2019-03-28