0001950047-23-004806.txt : 20231107 0001950047-23-004806.hdr.sgml : 20231107 20231107171310 ACCESSION NUMBER: 0001950047-23-004806 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231107 DATE AS OF CHANGE: 20231107 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ICON PLC CENTRAL INDEX KEY: 0001060955 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731] IRS NUMBER: 981067160 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 333-08704 FILM NUMBER: 231385054 BUSINESS ADDRESS: STREET 1: SOUTH COUNTY BUSINESS PARK STREET 2: LEOPARDSTOWN CITY: DUBLIN 18 STATE: L2 ZIP: 00000 BUSINESS PHONE: 00 353 1 291 2000 MAIL ADDRESS: STREET 1: SOUTH COUNTY BUSINESS PARK STREET 2: LEOPARDSTOWN CITY: DUBLIN 18 STATE: L2 ZIP: 00000 FORMER COMPANY: FORMER CONFORMED NAME: ICON PLC /ADR/ DATE OF NAME CHANGE: 20010213 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: O'Leary Thomas Noel CENTRAL INDEX KEY: 0001973450 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: DUNCREVAN HOUSE STREET 2: DUNCREVAN CITY: KILDARE STATE: L2 ZIP: W23 VW6T 144 1 primary_doc.xml 144 0001973450 XXXXXXXX LIVE 0001060955 ICON PLC 333-08704 South County Business Park Leopardstown Dublin 18 L2 D18 X5R3 353-1-291-2000 THOMAS NOEL O LEARY Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 38th Floor New York NY 10004

1049 272823.29 82326976 11/07/2023 NASDAQ Common 11/06/2020 Restricted stock vesting under a registered plan Issuer N 1049 11/06/2020 Services Rendered Y This trade is through a 10b5-1 agreement entered on November 24, 2020. 11/07/2023 /s/ Thomas Noel O'Leary