Exhibit 99.1 ICON Reports Fourth Quarter and Full Year 2024 Results Highlights Dublin, Ireland, February 19, 2025 – ICON plc (NASDAQ: ICLR), a world-leading healthcare intelligence and clinical research organization, today reported its financial results for the fourth quarter and full year ended December 31, 2024. CEO, Dr. Steve Cutler commented, "ICON's results in quarter four were in-line with our expectations as we continue to manage through a challenging transition period in our business. Encouragingly, ...