Transocean Ltd. Announces Distribution of Definitive Proxy Materials and 2012 Annual Report, Including Board Letter to Shareholders

ZUG, SWITZERLAND, Apr. 04, 2013-Transocean Ltd. (NYSE: RIG) (SIX: RIGN) today announced that it has commenced the mailing of proxy materials, including a WHITE proxy card and a letter from the Board of Directors, to the company's shareholders of record in advance of the company's 2013 Annual General Meeting (\"AGM\"), which will be held at 5 p.m. CEST, on May 17, 2013, in Zug, Switzerland.  The Proxy Statement and Annual Report are also available through the company's website at http://deepwater.com/ar.