Dr. Steve Cutler has been the Chief Executive Officer and Director of ICON from March 2017. Prior to this, he served as the Chief Operating Officer of ICON from January 2014 to March 2017. He served as the Group President, Clinical Research Services from November 2011 until his appointment as the Chief Operating Officer. Prior to joining ICON, he served as the Chief Executive Officer of Kendle having previously served as the Chief Operating Officer. Before joining Kendle, he spent 14 years with Quintiles serving in various positions such as the Senior Vice President, Clinical, Medical and Regulatory; Senior Vice President, Global Project Management; Vice President, Oncology - Europe; Senior Vice President, Project Management - Europe; as well as regional leadership positions in Australia and South Africa. Prior to joining Quintiles, he held positions with Sandoz in Europe and Australia.

Mr. Tom O'Leary has been the Chief Information Officer of the company. He also served as Manager of Data Management in Dublin in 2001; Global Head of Data Management in 2006; Vice President of Data Management. Prior to this, he held positions in Resource Management, Data Management and Project Management in GlaxoSmithKline.

Mr. Diarmaid Cunningham has been the Chief Administrative Officer, General Counsel and Company Secretary of the company since 2016. Prior to this, he served as the Secretary to the Board of the Association of Clinical Research Organisations (ACRO) in 2013 and 2014. Prior to joining ICON, he spent 10 years with A&L Goodbody, one of Ireland's premier corporate law firms.

Mr. Joe Cronin is the Chief Human Resources Officer of the company. Prior to this, he was the Executive Vice President of Human Resources. Mr. Cronin also served in various regional and global HR leadership roles at Kellogg company, General Motors Corporation and the Computer Sciences Corporation.

Dr. Greg Licholai has been the Chief Medical & Innovation Officer of the company since 2021. Prior to this, he served as the President of Rare Disease at Moderna Therapeutics, President and Chief Medical Officer at Castle Creek Pharmaceuticals, and partner at McKinsey & Co . Dr. Licholai also served as the Senior Executive at Proteostasis, Amicus Therapeutics and Medtronic Neurological as well as venture investor for Domain Associates.