Dennis Mullen was appointed CEO and chairman of Red Robin in August 2005 and formerly served as director and chairman of the company. Mr. Mullen has more than 30 years of experience as a corporate executive in the restaurant industry, and has been the CEO of several chains, including Cork & Cleaver Restaurants of Denver, Colorado; Pedro Verde's Mexican Restaurants, Inc., of Boulder, Colorado; Garcia's Restaurants, Inc., of Phoenix, Arizona; and BCNW, a franchise of Boston Chicken, Inc., in Seattle, Washington. Mr. Mullen started his career at PricewaterhouseCoopers and was the CFO of Lange Ski Boots.

Mr. Mullen is a trustee of the Janus Investment Fund (since 1971; chairman from 2004 through 2007), Janus Aspen Series (since 1993; chairman since 2004), Janus Adviser Series (since 2000; chairman since 2004) and Janus Capital Funds Plc (since 2004). In addition, Mr. Mullen serves on the nominating and governance and audit committees and as chairman of the investment oversight committee of Janus Funds.

Mr. Mullen holds a bachelor's degree in business from the University of Northern Iowa.