X0304 4 2012-03-08 0001005284 UNIVERSAL DISPLAY CORP \PA\ PANL 0001479956 Hack Michael G 375 PHILLIPS BLVD. EWING NJ 08618 0 1 0 0 GM OLED Lighting & Displays,VP Common Stock 2012-03-08 4 A 0 3245 0 A 17075 D Common Stock 2012-03-08 4 A 0 25765 0 A 42840 D These shares are subject to a time-based vesting restriction, with one-third of the total share amount vesting on each of March 8, 2013, 2014 and 2015. These shares are subject to a time-based vesting restriction, with one-quarter of the total share amount vesting on each of March 8, 2013, 2014, 2015 and 2016. These shares may not be sold or otherwise disposed of until two years after the applicable vesting date. /s/ Michael G. Hack 2012-03-12