** Shares of NXP Semiconductors NXPI.O down 8% at $180.60 after the bell
** NXPI says its CEO Kurt Sievers will retire by the end of the year, and Rafael Sotomayor, currently a vice president at the chipmaker, will succeed him
** Sotomayor will take on the role of the president effective Monday and will assume the role of chief executive in October
** Up to last close, shares down 5.6% YTD
(Reporting by Tanay Dhumal in Bengaluru)
((Tanay.Dhumal@thomsonreuters.com; Twitter: https://twitter.com/TanayDhumal))