Apple Marketing Chief for Watch, AirPods, Home and Health Leaves

Apple Inc.’s marketing executive in charge of the Apple Watch, AirPods, health and smart home initiatives said he’s retiring, marking a changing of the guard for a series of key product lines.

Stan Ng, who has worked at Apple for 31 years, said Thursday that he is leaving the company. In his role, he helped devise the original Apple Watch and has overseen the development of subsequent versions of the device along with other notable accessories.

His claim to fame at the company was helping launch the original iPod and serving as a key marketing executive for that product ...