X0306 4 2022-09-01 0 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001232978 ROSENBLATT SIDNEY D C/O UNIVERSAL DISPLAY CORPORATION 250 PHILLIPS BLVD. EWING NJ 08618 1 1 0 0 EVP and CFO Common Stock 2022-09-01 4 S 0 11500 105.71 D 144835 D Common Stock 2022-09-01 4 S 0 11038 106.75 D 133797 D Common Stock 2022-09-01 4 S 0 21576 107.94 D 112221 D Common Stock 2022-09-01 4 S 0 5886 108.65 D 106335 D Common Stock 92275 I By Grantor Retained Annuity Trust Common Stock 13000 I By Spouse Represents the weighted average of a range of sale prices from $105.26 to $106.20. 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. Includes 26 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on June 30, 2022. Represents the weighted average of a range of sale prices from $106.34 to $107.31. 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 $107.36 to $108.35. 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 $108.38 to $109.31. 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/ Sidney D. Rosenblatt (by Mauro Premutico as power of attorney) 2022-09-02