Mahon Janice K 4

What Happened
Janice K. Mahon, Senior VP of Technology Commercialization at Universal Display (OLED), had 605 shares withheld to satisfy a tax liability in connection with the vesting of restricted stock on March 4, 2026. The withheld shares were recorded at $101.52 per share, for a notional value of approximately $61,420. This was a tax-withholding disposition (not an open-market sale or purchase).

Key Details

• Transaction date: 2026-03-04; Filing date: 2026-03-06 (filed two days after the transaction; no indication of a late filing).
• Price: $101.52 per share; 605 shares withheld; total value ≈ $61,420.
• Reason: Withheld to satisfy tax liability on vesting of 1,676 restricted shares (footnote states 605 of 1,676 shares were withheld). That is ~36.1% of the vested shares.
• Shares owned after the transaction: not disclosed in the provided filing excerpt.
• Transaction code: F — tax withholding (routine administrative withholding, not a market sale).

Context
Tax-withholding dispositions are common when restricted stock vests; they are administrative and do not necessarily reflect the insider’s buying or selling intent in the open market. This was not a 10b5-1 sale or an exercise/sale of options; it simply satisfied tax obligations arising from a grant vesting.