X0303 4 2009-09-01 0001005284 UNIVERSAL DISPLAY CORP \PA\ PANL 0001101463 LACERTE LAWRENCE 375 PHILLIPS BLVD. EWING NJ 08618 1 0 0 0 Common Stock 2009-09-01 4 P 0 1524 10.73 A 917842 D Common Stock 2009-09-01 4 P 0 1500 10.68 A 919342 D Common Stock 2009-09-01 4 P 0 1976 10.64 A 921318 D Common Stock 2009-09-02 4 P 0 100 10.40 A 921418 D Common Stock 2009-09-02 4 P 0 100 10.43 A 921518 D Common Stock 2009-09-02 4 P 0 382 10.61 A 921900 D Common Stock 2009-09-02 4 P 0 575 10.53 A 922475 D Common Stock 2009-09-02 4 P 0 425 10.54 A 922900 D Common Stock 2009-09-02 4 P 0 500 10.52 A 923400 D Common Stock 2009-09-02 4 P 0 500 10.44 A 923900 D Common Stock 2009-09-02 4 P 0 100 10.42 A 924000 D Common Stock 2009-09-02 4 P 0 701 10.51 A 924701 D Common Stock 2009-09-02 4 P 0 500 10.46 A 925201 D Common Stock 2009-09-02 4 P 0 1100 10.47 A 926301 D Common Stock 2009-09-02 4 P 0 500 10.45 A 926801 D Common Stock 2009-09-02 4 P 0 100 10.41 A 926901 D Common Stock 2009-09-02 4 P 0 1399 10.50 A 928300 D Common Stock 2009-09-02 4 P 0 400 10.48 A 928700 D Common Stock 2009-09-02 4 P 0 400 10.49 A 929100 D Common Stock 2009-09-02 4 P 0 600 10.56 A 929700 D Common Stock 2009-09-02 4 P 0 200 10.57 A 929900 D Common Stock 2009-09-02 4 P 0 600 10.58 A 930500 D Common Stock 2009-09-02 4 P 0 1300 10.64 A 931800 D Common Stock 2009-09-02 4 P 0 590 10.59 A 932390 D Common Stock 2009-09-02 4 P 0 428 10.60 A 932818 D Common Stock 2009-09-02 4 P 0 500 10.66 A 933318 D /s/ Sidney D. Rosenblatt (by power of attorney) 2009-09-03