Tim Cook’s Final Day as Apple CEO: John Ternus Set to Take Over on September 1

Tim Cook’s nearly 15-year run as Apple CEO comes to an end on August 31, 2026, as hardware engineering chief John Ternus prepares to take over the world’s most valuable technology company.

Monday, August 31, marks the final day of Tim Cook’s tenure as chief executive of Apple. Beginning September 1, John Ternus, Apple’s longtime senior vice president of Hardware Engineering, will officially become the company’s new CEO.

The leadership change closes one of the most consequential chapters in Apple’s history. Cook succeeded Steve Jobs in 2011 and went on to oversee Apple’s transformation from an iPhone-centered technology giant into a sprawling global powerhouse spanning hardware, software, services and wearables.

Cook will not be leaving Apple entirely. He is set to become executive chairman, where he will continue advising the company and maintaining important relationships with governments and policymakers around the world.

The End of the Tim Cook Era

When Cook became CEO following Jobs’ death in 2011, Apple was already one of the world’s most influential technology companies. Under his leadership, however, its financial value and global reach expanded dramatically.

Apple’s market capitalization grew from roughly $350 billion when Cook took over to the multi-trillion-dollar range. At the same time, the company significantly expanded its services business, strengthened its privacy and security positioning and broadened its hardware portfolio.

Products and categories including the Apple Watch, AirPods and newer generations of Macs and iPads helped Apple reduce its dependence on the iPhone while creating additional revenue streams.

Cook’s management style was also notably different from Jobs’. Where Jobs was known for his theatrical product launches and intensely personal approach to product development, Cook became associated with operational discipline, supply-chain expertise and steady corporate leadership.

Who Is John Ternus, Apple’s New CEO?

John Ternus is hardly an outsider.

The veteran Apple executive has spent roughly 25 years at the company. He joined Apple’s product design team in 2001 and steadily climbed the corporate ladder, becoming vice president of Hardware Engineering in 2013 and senior vice president in 2021.

During his career, Ternus has been closely involved with some of Apple’s most important products, including the iPhone, Mac, iPad and AirPods.

His appointment signals a potentially more engineering-focused era for Apple.

Cook has previously praised Ternus as a “brilliant engineer and thinker” who is intensely focused on details — qualities that could shape Apple’s product strategy as the company enters a new technological era.

John Ternus Faces Major Challenges

Ternus takes control of Apple at a critical moment.

One of his biggest challenges will be artificial intelligence. Apple has faced criticism for moving more slowly than competitors in generative AI, while its Apple Intelligence platform and major Siri upgrades have struggled with delays and uneven development.

As CEO, Ternus will be under pressure to demonstrate that Apple can compete with technology giants investing aggressively in AI.

He will also have to deal with regulatory pressure, geopolitical tensions, supply-chain risks and Apple’s long-standing reliance on manufacturing in China.

Meanwhile, the smartphone market is becoming increasingly mature, making continued innovation essential if Apple wants to maintain its extraordinary growth and influence.

Apple’s Next Chapter Begins

Ternus’ first major test as CEO is expected to arrive quickly. Apple’s annual fall product event is anticipated in September, with new iPhone models and other hardware expected to take center stage.

The possibility of a foldable iPhone has also generated significant attention, although details surrounding future products can change before official announcements.

With Cook remaining as executive chairman, Apple is attempting to make the leadership transition as smooth as possible.

The company’s board structure is also expected to change, with current board chairman Arthur Levinson expected to become lead independent director as Ternus joins Apple’s board.

A Quiet End to a Historic Leadership Era

Unlike many major corporate leadership changes, Cook’s departure from the CEO role has been carefully planned and publicly announced months in advance.

There is no sudden resignation or corporate crisis behind the transition.

Instead, Apple is moving from one carefully prepared era to another.

For nearly 15 years, Cook guided Apple through extraordinary growth, expanding its financial power, product portfolio and influence across the global technology industry.

Now, beginning September 1, 2026, the responsibility shifts to John Ternus.

The Tim Cook era is ending.

The John Ternus era is beginning — and Apple’s next chapter could look very different.