Transocean Ltd.SEC Filings
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All SEC filings by Transocean Ltd. — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.
Financials
| 10-K | Annual report | View Diff | Feb 26, 2009 | |
| 10-Q | Quarterly report | View Diff | Nov 6, 2008 | |
| 10-Q | Quarterly report | View Diff | Aug 6, 2008 | |
| 10-Q | Quarterly report | View Diff | May 7, 2008 | |
| ARS | Annual report to shareholders | Apr 1, 2008 | ||
| 10-K | Annual report | View Diff | Feb 28, 2008 | |
| 10-Q | Quarterly report | View Diff | Oct 31, 2007 | |
| 10-Q | Quarterly report | View Diff | Aug 1, 2007 | |
| 10-Q | Quarterly report | View Diff | May 2, 2007 | |
| ARS | Annual report to shareholders | Mar 27, 2007 |
Events
| 8-K | Entry Into a Material Definitive Agreement | Dec 19, 2008 | ||
| 8-K | Departure of Directors or Principal Officers | Dec 12, 2008 | ||
| 8-K | Transocean Inc. Shareholders Approve Proposal To | Dec 9, 2008 | ||
| 8-K | Regulation Fd Disclosure | Dec 5, 2008 | ||
| 8-K | Entry Into a Material Definitive Agreement | Nov 26, 2008 | ||
| 8-K | Departure of Directors or Principal Officers | Nov 24, 2008 | ||
| 8-K | Transocean Inc. Proposal to Move Its Place of Incorporation | Nov 17, 2008 | ||
| 8-K/A | Regulation Fd Disclosure | Nov 7, 2008 | ||
| 8-K | Third Quarter 2008 Financial Results | Nov 5, 2008 | ||
| 8-K/A | Regulation Fd Disclosure | Nov 4, 2008 |
Registrations and Prospectuses
| 25-NSE | Exchange delisting | Jan 30, 2023 | ||
| S-3ASR | Automatic shelf registration | Jun 14, 2021 | ||
| 424B7 | Prospectus with selling stockholder info | Jul 11, 2018 | ||
| 424B3 | Prospectus supplement | Mar 8, 2018 | ||
| 425 | Business combination disclosure | Mar 8, 2018 | ||
| 424B3 | Prospectus supplement | Feb 21, 2018 | ||
| 425 | Business combination disclosure | Feb 20, 2018 | ||
| 425 | Business combination disclosure | Feb 20, 2018 | ||
| S-4/A | Registration of securities issued in business combination transactions | View Diff | Feb 16, 2018 | |
| 425 | Business combination disclosure | Feb 7, 2018 |
Proxies
| DEFA14A | Additional proxy soliciting materials | Nov 26, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Nov 24, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Nov 20, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Nov 6, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Nov 3, 2008 | ||
| DEF 14A | Definitive proxy | View Diff | Nov 3, 2008 | |
| DEFA14A | Additional proxy soliciting materials | Oct 10, 2008 | ||
| PRE 14A | Preliminary proxy | Oct 10, 2008 | ||
| DEF 14A | Definitive proxy | View Diff | Apr 2, 2008 | |
| DEFA14A | Additional proxy soliciting materials | Oct 23, 2007 |
Other
| EFFECT | Notice of effectiveness | Feb 20, 2018 | ||
| CERT | Certification of approval for exchange listing | Jan 30, 2018 | ||
| EFFECT | Notice of effectiveness | Dec 22, 2017 | ||
| UPLOAD | Letter from SEC | Dec 5, 2017 | ||
| UPLOAD | Letter from SEC | Nov 21, 2017 | ||
| UPLOAD | Letter from SEC | Nov 15, 2017 | ||
| UPLOAD | Letter from SEC | Oct 30, 2017 | ||
| EFFECT | Notice of effectiveness | Feb 2, 2009 | ||
| EFFECT | Notice of effectiveness | Feb 2, 2009 | ||
| EFFECT | Notice of effectiveness | Feb 2, 2009 |
Ownership
| 4 | Transocean International Ltd | Dec 4, 2025 | ||
| 4 | Transocean International Ltd | Oct 31, 2025 | ||
| SC 13D/A | Beneficial ownership report | Oct 31, 2025 | ||
| 3 | Initial statement of insider ownership | Sep 23, 2022 | ||
| SC 13D/A | Nauticus Robotics, Inc. | Sep 23, 2022 | ||
| SC 13G/A | Beneficial ownership report | Feb 17, 2009 | ||
| 4 | Change in insider ownership | Dec 15, 2008 | ||
| 4 | Change in insider ownership | Nov 26, 2008 | ||
| 4 | Change in insider ownership | Oct 2, 2008 | ||
| 4 | Change in insider ownership | Sep 5, 2008 |