$14.5 billion Office Depot has appointed Thomas Colligan to its board of directors. He will also serve on the audit committee.

Since September 2007, Colligan has been vice dean of the Wharton School's Aresty Institute of Executive Education. Previously, he spent more than 40 years with PricewaterhouseCoopers, where he served in several capacities, including partner, and most recently as vice chairman of PwC from 2001 to 2004.