UNIVERSAL DISPLAY CORP \PA\ — Director's Dealing 2020

Mar 9, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: UNIVERSAL DISPLAY CORP \PA\ (OLED)
CIK: 0001005284
Period of Report: 2020-03-05

Reporting Person: Mahon Janice K (VP of Tech Commercialization)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-03-05	Common Stock	F	126	$160.13	Disposed	28246	Direct
2020-03-06	Common Stock	F	130	$155.85	Disposed	28116	Direct
2020-03-06	Common Stock	A	11165	$0.0	Acquired	39281	Direct
2020-03-07	Common Stock	F	131	$155.85	Disposed	39150	Direct
2020-03-07	Common Stock	A	1184	$0.0	Acquired	40334	Direct
2020-03-07	Common Stock	F	403	$155.85	Disposed	39931	Direct
2020-03-08	Common Stock	F	2937	$155.85	Disposed	36994	Direct

Footnotes

F1: These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2020 of 322 shares of restricted stock previously granted to Ms. Mahon.

F2: Includes 21 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan.

F3: These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2020 of 384 shares of restricted stock previously granted to Ms. Mahon.

F4: These units were granted to Ms. Mahon under the Company's Long Term Incentive Plan as part of her 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.

F5: These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2020 of 394 shares of restricted stock previously granted to Ms. Mahon.

F6: These shares were granted to Ms. Mahon as performance units under the Company's Long Term Incentive Plan as part of her 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.

F7: These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2020 of 1,184 shares of restricted stock previously granted to Ms. Mahon.

F8: These shares were withheld to satisfy a tax liability in connection with the vesting on March 8, 2020 of 7,000 shares of restricted stock previously granted to Ms. Mahon.