Greg Brenneman is the Chairman of CCMP Capital, a private equity firm. Most recently, Brenneman had served as president and CEO of CCMP-owned Quiznos Sub, a fast-food sandwich chain. Brenneman also serves on the board of directors of The Home Depot, Inc. and Automatic Data Processing. From August 2004 through April 2006, Brenneman was CEO of the Burger King corporation, directing that company's turnaround efforts.

In business circles, Greg is most known for his role as President and COO of Continental Airlines under Gordon Bethune in the mid- to late-1990s; there he spearheaded many changes in the strategic and financial direction of the airline that lead the transition from “worst to first”. A Harvard Case study was written on his success story. He is a brilliant thinker, a committed Christian, and an inspiring speaker. Greg recently joined the NCS Advisory board.