Tim Cook marks 15 years as Apple CEO before stepping down September 1, handing the company to John Ternus, the senior vice president of Hardware Engineering who has spent 25 years at the firm. Apple announced the transition on April 20, 2026, following what the company called a “thoughtful, long-term succession planning process” approved unanimously by the board.
Cook, 65, will transition to executive chairman and continue working closely with Ternus through the summer to ensure a smooth handoff. Arthur Levinson, who has served as Apple’s non-executive chairman for 15 years, will become lead independent director. Ternus will join the board effective September 1.
“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 a visionary whose contributions to Apple over 25 years are already too numerous to count, and he is without question the right person to lead Apple into the future.”
Tim Cook, CEO, Apple
Ternus joined Apple’s product design team in 2001 and was named vice president of Hardware Engineering in 2013, then promoted to senior vice president in 2021. A mechanical engineer by training from the University of Pennsylvania, he has overseen hardware development across every Apple product category—iPhone, Mac, iPad, Apple Watch, and AirPods. His team recently led the introduction of the iPhone 17 lineup and the new MacBook Neo.
Cook’s Transformation of Apple
Cook inherited Apple from Steve Jobs in August 2011, stepping into one of business’s most closely watched leadership transitions. Jobs passed away six weeks later, leaving Cook to lead the company through its most transformative period. Under Cook’s 15-year tenure, Apple grew from a market capitalization of approximately $350 billion to more than $4 trillion—a more than 1,000 percent increase—while annual revenue nearly quadrupled from $108 billion in fiscal 2011 to over $416 billion in fiscal 2025.
Cook oversaw the launch of entirely new product categories, including the Apple Watch, AirPods, and Apple Vision Pro, while expanding the company’s services business into a $100 billion enterprise—equivalent to a Fortune 40 company on its own. He led Apple’s transition to its own silicon chips, reducing dependence on external suppliers and delivering gains in power efficiency and performance. The company also expanded its global footprint to more than 200 countries and territories, operating over 500 retail stores.
Cook made sustainability and privacy central to Apple’s strategy, reducing the company’s carbon footprint by more than 60 percent below 2015 levels while revenue nearly doubled. He established privacy as a core company value and pushed innovation in accessibility, believing Apple products should work for everyone. The company’s active installed base grew to more than 2.5 billion devices, and Apple added more than 100,000 team members during his tenure.
Ternus’s appointment represents continuity with deep technical expertise. Unlike Cook’s transition from Jobs—which came with only six weeks before Jobs’s passing—the company is planning a structured handoff through the summer. Cook will remain engaged as executive chairman, focusing on global policy relationships and strategic guidance, while Ternus leads day-to-day operations.
The transition comes as Apple navigates the artificial intelligence era. Ternus has expressed optimism about the company’s future, saying in the official announcement: “I am filled with optimism about what we can achieve in the years to come, and I am so happy to know that the most talented people on earth are here at Apple, determined to be part of something bigger than any one of us.”
Sources
- Apple — Official press release announcing Tim Cook’s transition to executive chairman and John Ternus’s appointment as CEO, including biographical details, Cook’s legacy metrics, and succession timeline (April 20, 2026)
- CNBC — Reporting on the CEO succession announcement and Ternus’s background (April 20, 2026)
- The New York Times — Coverage of Cook stepping down and Ternus’s appointment (April 20, 2026)
- BBC News — Reporting on the transition and Cook’s 15-year tenure (April 21, 2026)
- TechCrunch — Analysis of Cook’s 15-year legacy and Ternus’s qualifications (April 21, 2026)
- The Guardian — Context on Cook’s tenure following Steve Jobs and the succession process (April 21, 2026)
