Preliminary results of ICON plc's internal investigation indicate that the company's operating revenue for fiscal years 2023 and 2024 may have been slightly overstated.

Preliminary indications suggest that the revenue overestimation for both fiscal years did not exceed 2%. The company announced that investigations into specific business operations found no actual impact on customers. The company emphasized that the scope of business covered by this investigation did not harm customer interests, and the related operations complied with industry standards. ICON plc will continue to maintain transparent operations to ensure service quality and the full protection of customer rights. The Audit Committee under the Board of Directors of ICON Plc launched an internal investigation in late October 2025. Currently, this investigation is still ongoing. ICON plc shares plunged more than 28% in pre-market trading.