144 0001630299 XXXXXXXX LIVE 0001060955 ICON PUBLIC LIMITED COMPANY 333-08704 South County Business Park Leopardstown Dublin 18 L2 D18 X5R3 353-1-291-2000 JULIE ANN O'NEILL Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

915 150327.45 77154209 08/11/2026 NASDAQ Common 08/10/2026 Restricted Stock Vesting Under a Registered Plan Issuer N 915 08/10/2026 Services Rendered Y Represents the number of shares required to be sold to cover tax withholding obligations in connection with the vesting of compensatory equity awards. These sales are "sell to cover" transactions mandated by the applicable award agreement to satisfy the applicable tax withholding obligation and do not represent discretionary trades by the Reporting Person. 08/11/2026 /s/ JULIE ANN O'NEILL