** Shares of contract research firm ICON ICLR.O rise 17.8% to $120.75 premarket
** ICON says its audit committee completed an investigation and found revenue was overstated in 2023 and 2024
** The amount of overstatement in each year was lower than the previously announced upper limit of 2%, co says
** Similar issues were identified in 2025, but the revenue impact was smaller than in 2023 and 2024
** ICON will restate results for 2023, 2024, and the first nine months of 2025
** ICON expects to finish its audit and file its annual report in the coming weeks
** In February, ICON shares plunged over eight-year low after the company flagged an audit probe and delayed earnings
** As of last close, stock down 43.8% YTD
(Reporting by Kamal Choudhury in Bengaluru)
((Kamal.Choudhury@thomsonreuters.com;))