Mike Fallon, executive director and worldwide president of NSG’s automotive arm, will leave the group in June.
Mr Fallon joined St Helens-based Pilkington in 1979 after graduating from the University of Liverpool. He became vice-president for automotive glass replacement in 2007, taking his current role in 2008.
NSG president and chief executive, Craig Naylor, said: “Mike Fallon has made an outstanding contribution to the group over a long and distinguished career and has successfully led the automotive business since 2008, during a period of rapid change and volatility in the global automotive industry.
“A succession plan will be defined shortly, so as to allow for a smooth transition of responsibilities by the end of the current financial year and will be the subject of a further announcement.”