X0306 4 2019-08-06 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001101463 LACERTE LAWRENCE C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING NJ 08618 1 0 0 0 Common Stock 2019-08-06 4 S 0 5000 204.0336 D 308536 D Common Stock 2019-08-06 4 S 0 5000 205.00 D 303536 D Common Stock 2019-08-07 4 S 0 13245 205.9327 D 290291 D Common Stock 2019-08-07 4 S 0 2856 206.8701 D 287435 D Common Stock 2019-08-07 4 S 0 3388 207.997 D 284047 D Common Stock 2019-08-07 4 S 0 511 208.9808 D 283536 D Represents the weighted average of a range of sale prices from $203.44 to $204.44. The reporting person undertakes to provide to the Staff of Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average of a range of sale prices from $205.50 to $206.50. The reporting person undertakes to provide to the Staff of Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average of a range of sale prices from $206.525 to $207.44. The reporting person undertakes to provide to the Staff of Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average of a range of sale prices from $207.54 to $208.52. The reporting person undertakes to provide to the Staff of Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average of a range of sale prices from $208.71 to $209.40. The reporting person undertakes to provide to the Staff of Securities and Exchange Commission, the Company or any shareholder of the Company, upon request, full information regarding the number of shares sold at each separate price. /s/ Lawrence Lacerte (by Sidney D. Rosenblatt as power of attorney) 2019-08-08