After 15 years running the most valuable company on the planet, Tim Cook is stepping down as Apple’s chief executive.

Apple confirmed the news on Monday, April 20, 2026, announcing that Cook will transition to executive chairman of the company’s board of directors in September. His replacement, John Ternus, Apple’s Senior Vice President of Hardware Engineering, becomes CEO effective September 1, 2026.

The move ends one of the most consequential runs in corporate history. Cook took over from Steve Jobs in 2011, inherited a company the world was not sure could survive without its founder, and turned Apple into a $4 trillion business.

What Apple Said

The transition was approved unanimously by Apple’s board of directors following what the company described as a “thoughtful, long-term succession planning process.”

Cook addressed the news directly. “It has been the greatest privilege of my life to be the CEO of Apple and to have been trusted to lead such an extraordinary company,” he said. “Over the coming months I will be transitioning into a new role, leaving the CEO job behind in September, and becoming Apple’s executive chairman.”

He described his successor in terms that left little ambiguity about his confidence in the choice. “John Ternus has the mind of an engineer, the soul of an innovator, and the heart to lead with integrity and with honor,” Cook said.

Cook stays on through the summer to oversee the handover. As executive chairman, his role will include engaging with policymakers globally, an area where he has been one of Apple’s most visible faces.

Who Is John Ternus?

Ternus, 50, joined Apple in 2001 after a brief stint designing virtual reality headsets at a small firm called Virtual Research Systems. He studied mechanical engineering at the University of Pennsylvania, where he also competed on the varsity swim team, and graduated in 1997.

At Apple, he started on the product design team and worked his way up steadily. He became VP of Hardware Engineering in 2013 and was promoted to Senior VP in 2021, becoming the youngest member of Apple’s executive team at the time. His hardware fingerprints are on nearly every major Apple product of the past decade: the iPhone, iPad, Mac, AirPods, and Apple Watch all passed through his engineering oversight.

He is inheriting the company at an interesting moment. Apple is expected to unveil its first foldable iPhone later this year, the biggest change to the iPhone’s form factor in the product’s nearly 20-year history. The fact that a hardware engineer is now holding the top job when that launch arrives has not gone unnoticed in the tech world.

Tech analyst Carolina Milanesi put it plainly on X: “Now Ternus will be the one to introduce the first foldable iPhone, which means the most consequential hardware moment in years belongs to a hardware engineer from day one. Hard to believe this is just a coincidence.”

As part of the leadership restructuring, Arthur Levinson, who has served as Apple’s non-executive chairman for 15 years, will become lead independent director, also effective September 1. Ternus will also join Apple’s board of directors.

Tim Cook’s 15 Years at Apple

Cook became CEO in August 2011, just six weeks before Jobs died of pancreatic cancer. The circumstances were not easy. Apple was already a beloved company, but Jobs was Apple in a way that made the transition feel genuinely uncertain to many observers.

What followed was not a slow caretaker tenure. Under Cook, Apple’s market value grew from around $350 billion to $4 trillion. He expanded the product line significantly, overseeing the launch of the Apple Watch, AirPods, Apple Silicon, and the Vision Pro headset, and built Apple’s services business, including Apple Music, Apple TV+, and the App Store, into a revenue engine that now rivals the iPhone itself.

The announcement came slightly unexpectedly. Fox Business reported that just last month, Cook had downplayed retirement rumors, saying he “can’t imagine life without Apple” after 28 years with the company.

Apple shares slipped 0.5% in after-hours trading following the news, settling around $271. That modest reaction likely reflects the fact that succession rumors had been circulating for months and the market had largely priced in a leadership change.

What Comes Next for Apple

Ternus takes over a company navigating real pressure points. The Vision Pro, released in 2023 at $3,500, has been a commercial disappointment. Apple’s AI strategy has lagged behind rivals. And the iPhone, still Apple’s most important product by revenue, is approaching its 20th anniversary with the company expected to make the biggest design change in its history.

That last challenge is arguably Ternus’s first major test. Launching a foldable iPhone as your opening act as CEO will tell the market a lot about how he handles the pressure of Apple’s product cycle expectations. An engineer running product is a different bet than the supply chain operator Cook was when Jobs handed him the keys. Whether it is the right bet for where Apple is heading is something the next few product cycles will answer.