Universal Display SVP reports stock awards, tax withholding

Universal Display Corp senior vice president Janice K. Mahon reported stock-based compensation activity in company common stock.

Rhea-AI Filing Summary

Universal Display Corp senior vice president Janice K. Mahon reported stock-based compensation activity in company common stock. On March 7, 2026, she acquired a total of 13,978 shares through vested performance and restricted stock awards granted as part of prior compensation.

On the same date, 7,543 shares were disposed of at $97.03 per share to cover related tax liabilities, rather than through open-market sales. After these grants and tax withholdings, Mahon directly holds 64,946 shares of Universal Display common stock, reflecting a net increase in her equity position.

Insider Trade Summary

7 transactions reported

Mixed 7 txns

Insider Mahon Janice K

Role SVP of Tech Commercialization

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,604	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	941	$97.03	$91K
Grant/Award	Common Stock	8,597	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	4,113	$97.03	$399K
Grant/Award	Common Stock	2,777	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	1,420	$97.03	$138K
Exercise Price or Tax Liability	Common Stock	1,069	$97.03	$104K

Holdings After Transaction: Common Stock — 64,946 shares (Direct)

Footnotes (5)

1. F1. These shares were granted to the Reporting Person as performance units under the Company's Long Term Incentive Plan as part of 2023 compensation and vested on March 7, 2026 subject to the satisfaction of certain performance conditions, which the Company's Human Capital Committee certified on February 17, 2026 as having occurred.
2. F2. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 2,604 shares of restricted stock previously granted to the Reporting Person.
3. F3. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 8,597 shares of restricted stock previously granted to the Reporting Person.
4. F4. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 2,777 shares of restricted stock previously granted to the Reporting Person.
5. F5. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 2,091 shares of restricted stock previously granted to the Reporting Person.

FAQ

What did Universal Display (OLED) disclose about Janice Mahon’s recent share transactions?

Universal Display reported that SVP Janice K. Mahon received multiple stock awards that vested on March 7, 2026. Some shares were withheld to cover tax liabilities, and she ended the day holding 64,946 common shares directly.

How many Universal Display (OLED) shares did Janice Mahon acquire and dispose on March 7, 2026?

Janice Mahon acquired 13,978 Universal Display common shares through vested awards and had 7,543 shares withheld for taxes. These withholdings are not open-market sales but share dispositions used to satisfy tax obligations tied to the vesting.

Are Janice Mahon’s Universal Display (OLED) transactions open-market buys or sells?

The filing shows award grants and tax-withholding dispositions, not open-market trading. Shares were granted at no cost as compensation and some were surrendered at $97.03 per share solely to satisfy tax liabilities associated with vesting events.

What is Janice Mahon’s Universal Display (OLED) shareholding after the reported Form 4?

Following the March 7, 2026 transactions, Janice Mahon directly holds 64,946 shares of Universal Display common stock. This reflects her position after all grants vested and required tax-withholding share dispositions were completed that same day.

What compensation plans are involved in Janice Mahon’s Universal Display (OLED) stock awards?

The awards were granted under Universal Display’s Long Term Incentive Plan as part of 2023 compensation. Performance units vested on March 7, 2026 after the Human Capital Committee certified that specified performance conditions had been satisfied on February 17, 2026.

How were tax liabilities handled for Janice Mahon’s Universal Display (OLED) stock vesting?

Tax obligations were satisfied by withholding shares instead of paying cash. A total of 7,543 shares were delivered back at $97.03 per share in several transactions linked to separate restricted stock vestings on March 7, 2026.

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Accepted by SEC EDGAR 03/10/2026 - 04:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mahon Janice K

(Last) (First) (Middle)

C/O UNIVERSAL DISPLAY CORPORATION

250 PHILLIPS BLVD.

(Street)

EWING NJ 08618

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
UNIVERSAL DISPLAY CORP \PA\ [ OLED ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP of Tech Commercialization

3. Date of Earliest Transaction (Month/Day/Year)
03/07/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/07/2026		A		2,604(1)	A	$0	61,115	D
Common Stock	03/07/2026		F		941(2)	D	$97.03	60,174	D
Common Stock	03/07/2026		A		8,597(1)	A	$0	68,771	D
Common Stock	03/07/2026		F		4,113(3)	D	$97.03	64,658	D
Common Stock	03/07/2026		A		2,777(1)	A	$0	67,435	D
Common Stock	03/07/2026		F		1,420(4)	D	$97.03	66,015	D
Common Stock	03/07/2026		F		1,069(5)	D	$97.03	64,946	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares were granted to the Reporting Person as performance units under the Company's Long Term Incentive Plan as part of 2023 compensation and vested on March 7, 2026 subject to the satisfaction of certain performance conditions, which the Company's Human Capital Committee certified on February 17, 2026 as having occurred.

2. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 2,604 shares of restricted stock previously granted to the Reporting Person.

3. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 8,597 shares of restricted stock previously granted to the Reporting Person.

4. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 2,777 shares of restricted stock previously granted to the Reporting Person.

5. These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2026 of 2,091 shares of restricted stock previously granted to the Reporting Person.

	/s/ Janice K. Mahon (by Mauro Premutico as power of attorney)	03/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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