John Ternus takes Apple from Tim Cook on the eve of the iPhone event

John Ternus became Apple's chief executive on 1 September. He is the third person to hold the job after Steve Jobs and Tim Cook. Cook, who ran the company for 15 years, moved the same day into a new post as executive chairman and remains on the board.

The board approved the handover in April. That gave staff, suppliers and investors more than four months to prepare. Ternus also joined the board on 1 September. Arthur Levinson, who chaired the board for 15 years as a non-executive, became lead independent director.

Cook posted on his last day as chief executive that his title would change and that his regard for the Apple community would not. He had already told investors on the July earnings call that there was no better person to take the helm. In the April announcement he described Ternus as having the mind of an engineer and the heart to lead with integrity.

Ternus is 51, about the same age Cook was when he succeeded Jobs in 2011. He grew up in California, studied mechanical engineering at the University of Pennsylvania, swam varsity, and graduated in 1997. He worked briefly on virtual reality headsets at Virtual Research Systems before joining Apple's product design team in 2001.

He was named vice president of hardware engineering in 2013 and senior vice president in 2021. In that seat he oversaw the physical machines that still produce most of Apple's profit: iPhone, iPad, Mac, Apple Watch, AirPods and Vision Pro. Analysts read the choice of a hardware man as a signal that Cupertino intends to keep betting on devices even as software rivals pull ahead in generative models.

Cook's record is the scale against which Ternus will be measured. When Cook took over, Apple's market value sat near $350 billion. Under him it crossed $4 trillion and, at one point, touched $5 trillion. Every iPhone from the iPhone 5 onward shipped on his watch. So did the Watch, AirPods, Vision Pro, HomePod, Apple Music, Apple TV Plus and Fitness Plus. Services grew into a second engine beside hardware.

The job Ternus inherits is less tidy than that scoreboard. Apple has been slower than Microsoft, Google and OpenAI to put large language models into products that customers use every day. Hardware costs and a China-heavy supply chain sit under political pressure in Washington and Beijing at the same time. Cook is not leaving those files. Company statements say he will keep working with policymakers around the world, which in practice means the Trump administration and the Chinese government that licenses Apple's factories and its storefronts.

That split is the real structure of the transition. Ternus is free to run product, manufacturing and the 9 September launch event. Cook keeps the relationships that decide whether those products can be built and sold. Continuity is the official line. Several people who briefed reporters after the April announcement said they expected little immediate change in how decisions are made.

The first public test arrives in eight days. Apple has scheduled its autumn event for 9 September. Coverage points to the iPhone 18 Pro line and new Watches. Separate reports have said a foldable phone could appear, though the company has not confirmed that. Ternus will present the event as chief executive for the first time.

Jennifer Chatman, dean of the Haas School of Business at the University of California, Berkeley, told The New York Times that Apple is used to a consistent brain trust and that the risk is whether enough new ideas still get in. That is a polite way of stating the problem Ternus now owns. Cook professionalised a company that Jobs had already taught to ship. Ternus has to keep the factory running while closing a visible gap in on-device and cloud intelligence.

He said in April that he had spent almost his entire career at Apple, had worked under Jobs and had Cook as a mentor. He promised to lead with the values that have defined the company for half a century. Those values now have to produce a phone people will queue for and a software stack that does not feel a generation late.

Cook is still in the building. The title change is real. The first product event will show how much of the old command chain moved with it.