Apple Installs John Ternus as CEO After Tim Cook's 15-Year Run

Apple's leadership changed hands on September 1 when John Ternus assumed the chief executive role from Tim Cook. The shift places a hardware executive in charge of a company valued at roughly $4.6 trillion that must deliver on delayed artificial-intelligence features while managing supply constraints and policy relations with Washington and Beijing.

Cook, who succeeded Steve Jobs in 2011, expanded annual sales from $108 billion to $416 billion and profit to $112 billion, according to company figures cited across multiple reports. He built services revenue into a recurring stream tied to 2.5 billion active iPhones and grew wearables to $35 billion in fiscal 2025. Ternus, 51, previously led hardware engineering and contributed to the Apple Watch, AirPods and Vision Pro. Cook remains executive chairman with responsibility for global policy engagement.

The first public test arrives September 9 at Apple's annual event, where a foldable iPhone model is expected. Broader questions center on whether the new chief can accelerate AI work that has already required outside assistance from Google and whether he can retain engineering talent after several senior departures to Meta. Cook advised against imitating his predecessor; analysts note that operational discipline alone may not address product gaps in a market shifting toward new device categories.