Apple’s new CEO, John Ternus, takes over from Tim Cook after 15 years

Apple’s new CEO John Ternus takes the helm of the iconic tech giant on Tuesday, ending Tim Cook’s 15-year tenure during which the company’s value skyrocket to $4.6 trillion thanks to the iPhone’s enormous popularity.

Apple’s new CEO John Ternus takes the helm of the iconic tech giant on Tuesday, ending Tim Cook’s 15-year tenure during which the company’s value skyrocket to $4.6 trillion thanks to the iPhone’s enormous popularity.

The transition to a new CEO comes at a pivotal time for Apple. Artificial intelligence has unleashed the greatest upheaval within the industry since Steve Jobs unveiled the first iPhone in 2007. Apple has gotten off to a rough start in AI after stumbling in its efforts to deliver new features built on the technology, as promised nearly two years ago.

John Ternus during an Apple event in New York, on March 4, 2026. Adam Gray / Bloomberg via Getty Images fileEarlier this year, it unveiled new artificial intelligence advances, including upgrades to its Siri assistant, emphasizing a focus on privacy and day-to-day use as the iPhone maker tries to catch up with rivals.

Ternus faces challenges that will force him to step outside his comfort zone in hardware engineering. Beyond finding ways to keep Apple competitive in the artificial intelligence race, he will need to navigate supply chain questions and relationships with figures such as President Donald Trump, who offered public praise for his predecessor on Tuesday.