Under the applicable provisions of the Swiss Federal Act on Stock Exchanges and Securities Trading (SESTA), a person (or group subject to the disclosure obligations) must notify the Company and the SIX Swiss Exchange if its shareholdings in Transocean Ltd. reach, exceed or fall below certain thresholds.  We encourage you to review the Company’s Articles of Association and applicable Swiss law and regulations (including, but not limited to, the SESTA) to determine the Swiss reporting and disclosure obligations that may be applicable to you. Further information can also be found on the website of the SIX Swiss Exchange at http://www.six-exchange-regulation.com/obligations/disclosure_en.html.

The reporting and disclosure obligations under Swiss law and regulations are separate from and in addition to shareholder reporting, disclosure and other obligations under the rules and regulations of the U.S. Securities and Exchange Commission, the New York Stock Exchange, and other applicable laws and regulations.  You should consult your own legal and other advisors with respect to the particulars and consequences of the requirements and your obligations under Swiss law and regulations, as the Company and its agents cannot provide you this advice.