X0306 4 2015-03-27 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 2015-03-27 4 A 0 3132 0 A 53688 D Common Stock 2015-03-27 4 F 0 1753 46.78 D 51935 D These performance units were granted to Mr. Premutico under the Company's Long Term Incentive Plan as part of his 2013 compensation and vested subject to the satisfaction of certain performance conditions, which our Compensation Committee certified as having occurred on March 27, 2015. These shares were withheld to satisfy a tax liability in connection with the vesting on March 27, 2015 of 3,132 shares of restricted stock previously granted to Mr. Premutico. /s/ Mauro Premutico 2015-03-30