RIG: Company disclosure

Item 7.01 Regulation FD Disclosure. ​ Transocean Ltd. (NYSE: RIG) (“Transocean”) today announced a new contract award representing approximately $62 million in firm contract backlog and the formal approval of the previously announced Equinor agreement resulting in conversion of the $1.0 billion contract value to firm backlog. ​ The Transocean Norge was awarded a two-well contract with A/S Norske Shell. The estimated 120 days of work is expected to commence in direct continuation of the rig's previously awarded programs in Norway and contribute approximately $62 million in backlog, excluding additional services. The contract also includes one single-well option. ​ In late September, final approval was received from Equinor for the previously announced agreement for three harsh environment semisubmersible rigs in Norway: Transocean Enabler, Transocean Encourage , and Transocean Endurance . The total contract value of approximately $1.0 billion is now included in Transocean’s backlog. ​ A copy of the press release announcing the fixture referred to above is attached hereto and incorporated herein by reference as Exhibit 99.1 . ​ Item 9.01 Financial Statements and Exhibits. ​ (d) Exhibits. ​ ​ ​ ​ Exhibit No . ​ ​ ​ Description ​ ​ ​ 99.1 ​ Transocean Ltd. Announces Contract Backlog of Approximately $1.1 Billion, Including Fully Approved Equinor Agreement 101 ​ Interactive data files pursuant to Rule 405 of Regulation S-T formatted in Inline Extensible Business Reporting Language 104 ​ Cover Page Interactive Data File (formatted as inline XBRL). ​ SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ TRANSOCEAN LTD. ​ ​ ​ ​ Date: Oct