Apple Names John Ternus CEO as Tim Cook Moves to Executive Chairman

Apple named John Ternus CEO effective Sept. 1, handing the $4 trillion company to a 25-year insider tasked with closing its widening AI gap. Ternus, the company's longtime head of hardware engineering, will succeed Tim Cook, 65, who transitions to executive chairman — a role he expects to hold for several years, Apple announced April 20. Apple shares slipped in premarket trading on Tuesday and fell 2.7% during the regular session as Wall Street weighed the leadership change ahead of the company's Q2 earnings on April 30.

Ternus, 50, inherits a company at the peak of its iPhone cycle but visibly behind Google, Microsoft and OpenAI in frontier AI — the most advanced, general-purpose models being built by a small group of well-funded labs. A mechanical engineer who joined Apple in 2001, he is neither a product visionary in the Steve Jobs mold nor a supply-chain operator like Cook — a hardware specialist whose elevation signals Apple intends to defend its moat through devices and silicon rather than chase rivals into capital-intensive model training.

A Hardware Lifer Leads the Apple CEO Transition

His most consequential project to date was the 2020 shift from Intel to Apple-designed chips in the Mac, which improved energy efficiency and reignited Mac sales. More recently, he led the redesign behind the iPhone Air and the liquid glass software revamp, and is overseeing a foldable iPhone expected this fall.

Inside Apple, Ternus is known for a collaborative, low-conflict style closer to Cook's than Jobs's, and for navigating the company's function-based structure — an org chart that rewards insiders with cross-product fluency. In a Bloomberg profile, people close to him described him as risk-averse and reluctant to "upset the Apple cart," leaving open whether he can deliver the first post-iPhone hit product in over a decade.

Apple's AI Strategy: Distribution Over Models

Apple is betting its AI strategy on distribution rather than models: App Store AI revenue is on pace to exceed $1 billion this year from subscription fees paid by firms like OpenAI, with a Siri overhaul due later this year.

As part of the transition, Ternus steps down as hardware engineering chief immediately; Tom Marieb takes the role, reporting to Johny Srouji, who is being elevated to Chief Hardware Officer.