Tim Cook Retirement: Apple CEO to Step Down After 15 Years, John Ternus Takes Over

Tim Cook retirement ends a 15-year era at Apple as he transitions to executive chairman. The Silicon Review reports on John Ternus taking over as CEO on September 1, 2026, marking the company's most significant leadership change since Steve Jobs.

Tim Cook is stepping down as Apple's chief executive officer after nearly 15 years at the helm, the company announced, marking the most significant leadership transition at the tech giant since Steve Jobs handed over the reins in 2011.

The Tim Cook retirement will take effect on September 1, 2026, when he transitions to executive chairman of Apple's board of directors. John Ternus, Apple's senior vice president of hardware engineering, will assume the role of CEO. The transition was unanimously approved by the board following a "thoughtful, long-term succession planning process." 

"It has been the greatest privilege of my life to be the CEO of Apple," Cook said in a statement. "John Ternus has the mind of an engineer, the soul of an innovator, and the heart to lead with integrity and with honor. He is without question the right person to lead Apple into the future." 

Under Cook's leadership, Apple's market capitalization has grown from approximately $350 billion to $4 trillion, while annual revenue has nearly quadrupled from $108 billion to over $416 billion. The company now operates more than 500 retail stores globally, with over 2.5 billion active devices.

Ternus, 50, has spent 25 years at Apple, playing a key role in developing successive generations of iPhone, Mac, Apple Watch, iPad and Air Pods. He has also championed product sustainability, including the use of 3D-printed titanium in the Apple Watch Ultra 3.

In his new executive chairman role, Cook will focus on engaging with global policymakers and overseeing the transition, while Ternus will lead Apple's product strategy. Arthur Levinson will transition to lead independent director on September 1.

As Tim Cook steps down after 15 transformative years at Apple's helm, The Silicon Review examines what the John Ternus era means for the world's most valuable company and whether an engineer-CEO can navigate the AI revolution, supply chain pressures, and the launch of Apple's first foldable iPhone.

 About the Author

Sashindra Suresh is an experienced writer specializing in artificial intelligence, software development, and emerging technologies. With a strong ability to translate complex technical concepts into clear, engaging insights, she has contributed to a wide range of publications and platforms. Her work focuses on making cutting-edge innovations accessible to both industry professionals and curious readers alike.