Money Nike CEO to step down: Joins head of Under Armour in changing roles in 2020 October 22, 2019Charisse Jones, USA TODAYComments Off on Nike CEO to step down: Joins head of Under Armour in changing roles in 2020 Mark Parker, who's been CEO of Nike for the last 13 years, will be replaced by board member John Donahoe as of Jan. 13. Parker will have new role.