SynopsisCook will move into the role of executive chairman, while Ternus will join Apple’s board the same day. Cook has played a central role in expanding the company’s business and global reach.Tim Cook, who helped turn Apple into one of the world’s most valuable companies, will step down as its chief executive on September 1 after 15 years at the helm. Apple announced the leadership change in April, with John Ternus, the company’s hardware chief, set to succeed him.Cook will move into the role of executive chairman, while Ternus will join Apple’s board the same day. Cook has played a central role in expanding the company’s businessNow Playing