Company Description (as filed with the SEC)
Ocean Rig UDW Inc., a corporation organized under the laws of the Republic of the Marshall Islands, was formed on December 10, 2007 under the name Primelead Shareholders Inc. Primelead Shareholders Inc. was formed in December 2007 for the purpose of acquiring the shares of our predecessor, Ocean Rig ASA, which was incorporated in September 1996 under the laws of Norway. We acquired control of Ocean Rig ASA on May 14, 2008. Prior to the private offering of our common shares in December 2010, discussed below, we were a wholly-owned subsidiary of DryShips. Our shares commenced trading on the NASDAQ Global Select Market under the symbol "ORIG" on October 6, 2011. As of March 20, 2013, DryShips, our parent company, owned approximately 59.4% of our outstanding common shares. Each of our drilling units is owned by a separate wholly-owned vessel-owning subsidiary. ... More ...