Apple announced Cook will step down as CEO in September to take on a new role at the company.

Apple CEO Tim Cook's move to executive chair spurred commentary from tech leaders Sam Altman and Palmer Luckey.

John Ternus, vice president of hardware engineering, will succeed Cook as CEO on September 1.

Apple announced Cook will step down as CEO in September to take on a new role at the company.

Tim Cook's 15-year tenure at the helm of Apple was highly profitable for Wall Street, as the company's market cap swelled from $350 billion to $4 trillion.

Incoming CEO John Ternus said he was "lucky" to have worked under Apple founder Steve Jobs and considers Tim Cook his mentor.

Tech executives from Amazon, Apple, Google and Meta have dined with Trump and donated millions to his inauguration fund and the White House ballroom.