Tim Cook is stepping down. John Ternus is Apple's next CEO, effective September 1.

Apple named John Ternus its next chief executive on Monday. Tim Cook becomes executive chairman on September 1, 2026, ending a 15-year run that saw the company grow from a $350 billion phone maker into a $4 trillion platform business. The board’s vote was unanimous.

What’s changing, and when

Cook stays in the CEO chair through the summer. On September 1 he hands it to Ternus, Apple’s senior vice president of hardware engineering since 2013, and moves to executive chairman, where Apple says he’ll focus on “engaging with policymakers around the world.” Arthur Levinson, non-executive chairman for 15 years, becomes lead independent director the same day.

The hardware bench is also shuffling. Johny Srouji, who has run Apple Silicon since the A4, is elevated to chief hardware officer. Tom Marieb picks up broader responsibility in the hardware org. Both moves free Ternus to run the whole company without leaving the hardware group rudderless.

Cook’s written statement on Ternus: “the mind of an engineer, the soul of an innovator, and the heart to lead with integrity and honor.” Ternus on the job: “I am profoundly grateful for this opportunity to carry Apple’s mission forward.”

Who is John Ternus

He’s 51. He joined Apple in 2001 as a product design engineer, with a mechanical engineering degree from the University of Pennsylvania. His fingerprints are on the iPhone, iPad, AirPods, Mac, and Apple Watch hardware programs. He was promoted to senior vice president in 2021 and has anchored every major hardware launch keynote since.

That’s the formal résumé. Culturally, Ternus is the quiet opposite of the Jony Ive design-hero era: an engineer’s engineer, a sustainability and repairability advocate, the exec behind the self-service repair shift and the move away from glued-in batteries. It’s not a coincidence he’s taking over the same year the EU’s Article 11 battery rules kick in.

The succession was telegraphed for years

This isn’t a surprise resignation. It’s the slow-rolled result of a succession plan Apple has been running since at least 2022, when Ternus started headlining the marquee product launches. Mark Gurman has had “Ternus is the heir apparent” in the column for most of the last three years. The decision was made; the question was when.

“When” turned out to be now. Cook is 65. The job description has drifted from product-launch emcee to geopolitical ambassador, sitting between Washington, Brussels, Beijing, and Riyadh, with the AI strategy lagging competitors and the Siri team getting retrained on Claude Code. Handing off to a hardware native while Cook takes on the policy role full-time is the cleanest division of labor Apple could draw.

Cook’s scorecard

Apple’s own release lays out the 15-year tally:

• Market cap: $350 billion to $4 trillion, a roughly 11x run.
• Revenue: $108 billion (FY2011) to $416 billion (FY2025).
• Retail: 500+ stores across 25+ countries.
• Active installed base: 2.5 billion devices.
• Services: built from essentially zero to a $100 billion business.

Services is Cook’s real legacy. The iPhone was already a juggernaut in 2011. What Cook did was turn one-time hardware buyers into recurring subscribers, which is why Apple’s gross margin trajectory under his tenure looks nothing like the hardware-only peers.

What this means for you

If you build on Apple platforms, bet on continuity in the short term. Ternus is an inside hire who’s been in the room for every product decision. He’s not going to rip up Apple Intelligence or abandon the silicon roadmap. Expect harder pushes on repairability, thermal design, and the device-side AI stack, because those are his home turf.

The medium-term change is tone. Apple’s public arguments under Cook have leaned on policy and values. Under Ternus, expect more arguments about engineering tradeoffs: why sealed designs still win on water resistance, why on-device inference beats cloud, why a chip generation matters. Developers should read that as a signal that the iPadOS-as-pro-platform story finally gets a sincere champion. And if you’re holding AAPL, Cook as executive chairman means the transition is ceremonial, not a board fight. That’s the point of the September 1 date.