Under Armour has announced the appointment of Chip Molloy as chief financial officer, effective Jan. 19. He replaces Brad Dickerson, who will remain with the company in an advisory role through February. Molloy most recently served as a senior adviser for Roark Capital Group. From 2007 to 2013, he was chief financial officer of PetSmart. He previously served ten years as a U.S. Navy fighter pilot.