Janice K. Mahon - 07 Mar 2026 Form 4 Insider Report for UNIVERSAL DISPLAY CORP \PA\ (OLED)

Reporting relationship: SVP of Tech Commercialization
Issuer ticker: OLED
Reported as of: 07 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 10 Mar 2026, 16:00:07 UTC
Prior SEC filing: 06 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Janice K. Mahon (by Mauro Premutico as power of attorney)

Key filing fact

Janice K. Mahon filed Form 4 for UNIVERSAL DISPLAY CORP \PA\ (OLED) on 10 Mar 2026.

Key facts

This page summarizes Janice K. Mahon's Form 4 filing for UNIVERSAL DISPLAY CORP \PA\ (OLED).
7 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 10 Mar 2026, 16:00.

Change

Previous filing in this sequence was filed on 06 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001423446 Primary reporting owner

Mahon Janice K

Relationship: SVP of Tech Commercialization
Address: C/O UNIVERSAL DISPLAY CORPORATION, 250 PHILLIPS BLVD., EWING
Signature: /s/ Janice K. Mahon (by Mauro Premutico as power of attorney)
Signature date: 10 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OLED transaction

Common Stock

Award

Transaction value
Shares: +2,604
Change %: +4.5%
Price: $0.000000^*
Shares after: 61,115
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F1

OLED transaction

Common Stock

Tax liability

Transaction value
Shares: -941
Change %: -1.5%
Price: $97.03^*
Shares after: 60,174
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F2

OLED transaction

Common Stock

Award

Transaction value
Shares: +8,597
Change %: +14%
Price: $0.000000^*
Shares after: 68,771
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F1

OLED transaction

Common Stock

Tax liability

Transaction value
Shares: -4,113
Change %: -6%
Price: $97.03^*
Shares after: 64,658
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F3

OLED transaction

Common Stock

Award

Transaction value
Shares: +2,777
Change %: +4.3%
Price: $0.000000^*
Shares after: 67,435
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F1

OLED transaction

Common Stock

Tax liability

Transaction value
Shares: -1,420
Change %: -2.1%
Price: $97.03^*
Shares after: 66,015
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F4

OLED transaction

Common Stock

Tax liability

Transaction value
Shares: -1,069
Change %: -1.6%
Price: $97.03^*
Shares after: 64,946
Date: 07 Mar 2026
Ownership: Direct
Footnotes: F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.