Why Is Tim Cook Stepping Down as Apple CEO Right Before the Big September Product Launch Event?

Tim Cook stepped down as Apple CEO on Tuesday, 1 September 2026, ending 15 years at the helm just eight days before the company's major September product event in Cupertino, California. John Ternus has succeeded him as chief executive, although Cook is not leaving Apple and has instead become executive chairman.

The timing places Ternus in charge for Apple's 9 September event, when the company is expected to unveil its next generation of iPhones. But there is no evidence that Cook timed his departure specifically to hand his successor a headline-making product launch. Apple announced the leadership transition in April, describing it as the result of a 'thoughtful, long-term succession planning process.'

Why Tim Cook Is Stepping Down Now

Cook, 65, took over from Apple co-founder Steve Jobs in August 2011 after establishing himself as the operations specialist behind the company's increasingly sophisticated global supply chain.

Apple has grown enormously during his tenure. Its market capitalisation stood at roughly $350 billion (£256.75 billion) when Cook became CEO and has since climbed above $4.5 trillion (£3.32 trillion), although the figure changes with Apple's share price.

His departure from the chief executive role is therefore significant, but it is not a retirement from the company.

As executive chairman, Cook will continue assisting with certain areas of Apple's business, including engagement with policymakers around the world.

Apple had also spent years preparing for succession. When the change was announced in April, Cook said the company was in a strong position and praised its future product roadmap. More importantly, he said Apple had found the person he believed was ready to take over.

Cook described Ternus as 'without question the right person to lead Apple into the future.'

Who Is New Apple CEO John Ternus?

Ternus joined Apple's product design organisation in 2001 and became senior vice president of Hardware Engineering in 2021.

His career gives Apple a chief executive with a markedly different background from Cook, whose reputation was built around operations, manufacturing and supply-chain management.

Ternus has overseen hardware engineering across some of Apple's most important products, including the iPhone, Mac and iPad. His elevation also puts a veteran product engineer in charge as Apple faces pressure to deliver the next major wave of devices and artificial intelligence features.

His first major public test as CEO comes almost immediately.

Apple has scheduled a special event for 9 September at 10am Pacific Time. The company has not disclosed the full product line-up, but Reuters reports that Apple is expected to introduce its latest iPhone series and could potentially unveil its first foldable iPhone.

The importance of the iPhone to Apple's business is difficult to overstate. Apple's entire iPhone category generated about $54.3 billion (£40.13 billion) in its latest reported quarter, against total company revenue of $109.4 billion (£80.85 billion).

Will Apple Finally Launch a Foldable iPhone?

A foldable iPhone would represent Apple's entrance into a product category already occupied by Samsung, Google, Motorola, Huawei, Honor, Xiaomi and other manufacturers.

Google, for example, unveiled its first Pixel Fold in May 2023 before shipments began the following month.

Apple has yet to confirm publicly that a foldable iPhone will appear at the September event, meaning reports of an imminent launch should still be treated as expectations rather than established fact.

Such a move would nevertheless fit an approach Cook has publicly articulated before.

Speaking to Charlie Rose in 2014, Cook summed up Apple's attitude towards entering new product categories by saying the company's philosophy had always been to be 'the best, not the first.'

Apple also would not be launching the iPhone Air brand for the first time this year. The company introduced the original iPhone Air in September 2025, meaning any new version announced this month would be a successor to the existing model.

Cook's Apple Era Is Not Quite Over

The proximity of Cook's departure to Apple's biggest product season creates an irresistible narrative: one CEO leaves and another immediately steps on stage to unveil the company's next generation of devices.

Apple's own account is less dramatic.

The company says the handover was planned well in advance, approved unanimously by its board and designed to provide a smooth transition between two executives who had worked together for years.

Cook is also remaining inside Apple rather than making a clean break after 15 years as CEO.

That distinction matters. The 9 September event may give Ternus his first opportunity to define himself publicly as Apple's new leader, but Cook's continuing position as executive chairman means the transition is better understood as a carefully managed transfer of day-to-day authority than a sudden departure before an iPhone launch.

For Ternus, however, the spotlight now belongs to him. Apple's first major product event of the post-Cook CEO era will offer an early indication of how much will change — and how much will remain familiar.