X0306 4 2017-04-04 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 2017-04-04 4 A 0 1579 0 A 119590 D Common Stock 2017-04-04 4 F 0 884 84.60 D 118706 D These shares were granted to Mr. Premutico as performance units under the Company's Long Term Incentive Plan as part of his 2014 compensation and vested subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on April 4, 2017 as having occurred. Includes 112 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on March 31, 2017. These shares were withheld to satisfy a tax liability in connection with the vesting on April 4, 2017 of 1,579 shares of restricted stock previously granted to Mr. Premutico. /s/ Mauro Premutico 2017-04-06