Apple CEO Tim Cook is stepping down as Apple's chief executive officer, and hardware engineering chief John Ternus is set to take over, Apple announced today. Cook will continue on as Apple CEO through the summer, with Ternus set to join Apple's Board of Directors and take over as CEO on September 1, 2026. Cook is going to transition to executive chairman, and he will "assist with certain aspects of the company, including engaging with policymakers around the world".