Company: RIG
Filing Date: 2025-12-01
Form Type: 144/A
Source: 0001950047-25-009497
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Company: Transocean Ltd.
Filing Date: 2025-12-01
Form: 144/A
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 payment of all or any part of the purchase price or other consideration therefor: 144/A: Securities To Be Sold

| Title of the Class | Date you Acquired | Nature of Acquisition Transaction   | Name of Person from Whom Acquired | Is this a Gift? | Date Donor Acquired | Amount of Securities Acquired | Date of Payment | Nature of Payment * |
| Common             | 04/22/2017        | RSU Vesting under a Registered Plan | Issuer                            |                 |                     |                         14493 | 04/22/2017      | Services Rendered   |
| Common             | 02/06/2020        | Performance Stock Units             | Issuer                            |                 |                     |                           792 | 02/06/2020      | Services Rendered   |
| Common             | 02/08/2024        | Performance Stock Units             | Issuer                            |                 |                     |                        249093 | 02/08/2024      | Services Rendered   |
| Common             | 02/08/2024        | Performance Stock Units             | Issuer                            |                 |                     |                        235622 | 02/08/2024      | Services Rendered   |

*If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold. 144/A: Securities Sold During The Past 3 Months

| Nothing to Report |

144/A: Remarks and Signature

| Remarks                                                                                                               | This amendment is being filed due to an administrative error with respect to the Form 144 filed on November 26, 2025.  This amendment corrects the number of shares sold from 499,940 shares to 500,000 shares. |
| Date of Notice                                                                                                        | 12/01/2025                                                                                                                                                                                                      |
| ATTENTION:                                                                                                            |                                                                                                                                                                                                                 |
| The person for whose account the securities to which this notice relates are to be sold hereby represents by signing  
 this notice that he does not know any material