X0306 4 2020-03-05 0001005284 UNIVERSAL DISPLAY CORP \PA\ OLED 0001232978 ROSENBLATT SIDNEY D C/O UNIVERSAL DISPLAY CORPORATION 375 PHILLIPS BLVD. EWING NJ 08618 1 1 0 0 EVP and CFO Common Stock 2020-03-05 4 F 0 349 160.13 D 197940 D Common Stock 2020-03-06 4 F 0 420 155.85 D 197520 D Common Stock 2020-03-06 4 A 0 25666 0.0 A 223186 D Common Stock 2020-03-07 4 F 0 576 155.85 D 222610 D Common Stock 2020-03-07 4 A 0 4080 0.0 A 226690 D Common Stock 2020-03-07 4 F 0 1730 155.85 D 224960 D Common Stock 53840 I By Grantor Retained Annuity Trust Common Stock 13000 I By Spouse Common Stock 50356 I By Family Limited Partnership These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2020 of 831 shares of restricted stock previously granted to Mr. Rosenblatt. Includes 14 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan. These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2020 of 992 shares of restricted stock previously granted to Mr. Rosenblatt. These units were granted to Mr. Rosenblatt under the Company's Long Term Incentive Plan as part of his 2020 compensation and are subject to a time-based restriction, with one-third of the total unit amount vesting on each of March 6, 2021, 2022, and 2023. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2020 of 1,359 shares of restricted stock previously granted to Mr. Rosenblatt. These shares were granted to Mr. Rosenblatt as performance units under the Company's Long Term Incentive Plan as part of his 2017 compensation and vested on March 7, 2020 subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on February 13, 2020 as having occurred. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2020 of 4,080 shares of restricted stock previously granted to Mr. Rosenblatt. These shares are held by Mr. Rosenblatt's spouse and are being reported as beneficially owned by him. These shares are held by the Rosenblatt Family Limited Partnership, a limited partnership of which Mr. Rosenblatt is the sole general partner and he and his children are the sole limited partners. /s/ Sidney. D. Rosenblatt (by Mauro Premutico as power of attorney) 2020-03-09