ICON plc Chief Accounting Officer Emer Lyons Disposes Shares to Cover Tax Obligations

Overview of the Filing

Emer Lyons, Chief Accounting Officer of ICON plc (NASDAQ: ICLR), filed a Form 4 detailing equity transactions on October 22 and October 23, 2026.

Transaction Breakdown

• RSU Vesting / Derivative Conversion (Code M): On October 22, 2026, 510 Restricted Share Units (RSUs) granted on May 22, 2023, vested in full and were settled into 510 Ordinary Shares.
• Sell-to-Cover Dispositions (Code S): On October 23, 2026, a total of 272 shares were sold in multiple open-market tranches to satisfy statutory tax withholding liabilities resulting from the RSU vesting:
  • 42 shares @ weighted average $180.54
  • 81 shares @ weighted average $181.39
  • 43 shares @ weighted average $182.30
  • 52 shares @ weighted average $183.42
  • 54 shares @ weighted average $184.29
• Total Disposition Value: Approximately $49,652.87.

Post-Transaction Holdings

Following the vesting and mandatory sell-to-cover transactions, Emer Lyons directly holds 990 Ordinary Shares of ICON plc.

Market & Trading Significance

This activity is classified as Low significance. The sales were non-discretionary "sell to cover" transactions solely intended to fulfill tax withholding obligations connected with RSU settlement, reflecting routine compensation administration rather than market sentiment.