Travelport

Travelport is one of the world’s largest travel conglomerates. The company operates three primary businesses - a global distribution system business, which comprises the Galileo and Worldspan brands; a supplier services and data analysis business, Shepherd Systems; and a group travel and wholesale hotel business through its brand GTA. Travelport also owns a significant interest in Orbitz Worldwide (NYSE: OWW), a leading global online travel company.

Travelport was taken private by blackstone on August 23, 2006.

Sources:
http://www.travelport.com/en/investors/