Transocean Ltd. SEC filings RIG
Transocean Ltd. has 1,000 filings in SEC EDGAR's recent list, going back to Apr 8, 2016. Its latest annual report, Form ARS, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 3, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 2, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 3, 2026 | Sep 30, 2026 |
| DEFA14A | Additional proxy material | Nov 2, 2026 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2026 | Nov 2, 2026 |
| 8-K |
Current report
Other events
|
Oct 23, 2026 | Oct 23, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 19, 2026 | Oct 19, 2026 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Oct 15, 2026 | Oct 15, 2026 |
| DEFA14A | Additional proxy material | Oct 14, 2026 | — |
| 8-K |
Current report
Other events
|
Oct 14, 2026 | Oct 14, 2026 |
| DEFM14A | Filing | Oct 14, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 9, 2026 | Oct 9, 2026 |
| DEFA14A | Additional proxy material | Sep 30, 2026 | — |
| 8-K |
Current report
Other events
|
Sep 30, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 15, 2026 | Sep 15, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 20, 2026 | Aug 20, 2026 |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 5, 2026 | Aug 5, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 2, 2026 |
| DEFA14A | Additional proxy material | Jul 1, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jul 1, 2026 | Jun 29, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 16, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change, Shareholder vote results
|
May 26, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 144 | Notice of proposed sale | May 21, 2026 | — |
| DEFA14A | Additional proxy material | May 19, 2026 | — |
| 8-K |
Current report
Material agreement
|
May 19, 2026 | May 19, 2026 |
| PREM14A | Filing | May 19, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 5, 2026 | May 1, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| DEFA14A | Additional proxy material | May 5, 2026 | — |
| 8-K |
Current report
Other events
|
May 5, 2026 | May 4, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 4, 2026 | May 4, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 16, 2026 | Apr 16, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 14, 2026 | Apr 14, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 2, 2026 | Apr 2, 2026 |
| ARS | Annual report to shareholders | Mar 31, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Mar 31, 2026 | — |
| DEF 14A | Proxy statement | Mar 31, 2026 | May 22, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| PRE 14A | Preliminary proxy statement | Mar 20, 2026 | May 22, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 4, 2026 |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 1, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 23, 2026 | Feb 23, 2026 |
| 10-K | Annual report | Feb 23, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 20, 2026 | Feb 19, 2026 |
| DEFA14A | Additional proxy material | Feb 17, 2026 | — |
| SCHEDULE 13D | Ownership over 5% (active) | Feb 13, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Feb 11, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 11, 2026 | Feb 11, 2026 |
| DEFA14A | Additional proxy material | Feb 11, 2026 | — |
| DEFA14A | Additional proxy material | Feb 10, 2026 | — |
| 8-K |
Current report
Material agreement, Other events
|
Feb 10, 2026 | Feb 9, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| DEFA14A | Additional proxy material | Feb 9, 2026 | — |
| 8-K |
Current report
Other events
|
Feb 9, 2026 | Feb 9, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 28, 2026 | Jan 26, 2026 |
| 144 | Notice of proposed sale | Jan 26, 2026 | — |
| 144 | Notice of proposed sale | Jan 26, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 5, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Dec 8, 2025 | Dec 4, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 8, 2025 | Dec 8, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 3, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 4, 2025 | — |
| 4 | Insider transaction | Dec 4, 2025 | Nov 28, 2025 |
| 144 | Notice of proposed sale | Dec 4, 2025 | — |
| 144 | Notice of proposed sale | Dec 3, 2025 | — |
| 4 | Insider transaction | Dec 1, 2025 | Nov 26, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 26, 2025 |
| 144/A | Filing | Dec 1, 2025 | — |
| 144 | Notice of proposed sale | Nov 26, 2025 | — |
| 144 | Notice of proposed sale | Nov 26, 2025 | — |
| 4 | Insider transaction | Nov 25, 2025 | Nov 24, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 24, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 24, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 18, 2025 | Nov 18, 2025 |
| 4 | Insider transaction | Nov 4, 2025 | Oct 31, 2025 |
| 4 | Insider transaction | Oct 31, 2025 | Oct 28, 2025 |
| 144 | Notice of proposed sale | Oct 31, 2025 | — |
| 10-Q | Quarterly report | Oct 30, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2025 | Oct 29, 2025 |
| 4 | Insider transaction | Oct 28, 2025 | Oct 24, 2025 |
| 4 | Insider transaction | Oct 28, 2025 | Oct 24, 2025 |
| 144 | Notice of proposed sale | Oct 24, 2025 | — |
| 144 | Notice of proposed sale | Oct 24, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure, Other events
|
Oct 15, 2025 | Oct 15, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 15, 2025 | Oct 15, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 1, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 30, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 30, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Material agreement
|
Sep 26, 2025 | Sep 25, 2025 |
| 424B5 | Prospectus supplement | Sep 26, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 25, 2025 | Sep 24, 2025 |
| 424B5 | Prospectus supplement | Sep 24, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 24, 2025 | Sep 24, 2025 |
| 8-K |
Current report
Impairment
|
Aug 27, 2025 | Aug 27, 2025 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Aug 19, 2025 | Aug 19, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 8-K |
Current report
Unregistered share sale, Other events
|
Aug 11, 2025 | Aug 11, 2025 |
| S-8 | Employee stock plan registration | Aug 5, 2025 | — |
| 10-Q | Quarterly report | Aug 5, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2025 | Aug 4, 2025 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jul 22, 2025 | Jul 22, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 16, 2025 | Jul 16, 2025 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jul 7, 2025 | Jul 7, 2025 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jun 20, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 16, 2025 | Jun 13, 2025 |
| 144 | Notice of proposed sale | Jun 13, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 4, 2025 | Jun 4, 2025 |
| 8-K |
Current report
Impairment, Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
Jun 3, 2025 | Jun 3, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 3 | Initial insider ownership | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 29, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 29, 2025 |
| 4 | Insider transaction | May 12, 2025 | May 12, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 30, 2025 |
| 10-Q | Quarterly report | Apr 29, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2025 | Apr 28, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 23, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 16, 2025 | Apr 16, 2025 |
| 4 | Insider transaction | Apr 14, 2025 | Apr 11, 2025 |
| 144 | Notice of proposed sale | Apr 11, 2025 | — |
| ARS | Annual report to shareholders | Apr 1, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 1, 2025 | — |
| DEF 14A | Proxy statement | Apr 1, 2025 | May 30, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 21, 2025 | Mar 21, 2025 |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 18, 2025 | Feb 18, 2025 |
| 10-K | Annual report | Feb 18, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 18, 2025 | Feb 18, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 18, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 12, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Jan 14, 2025 | Jan 10, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 17, 2024 | Dec 17, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 144 | Notice of proposed sale | Dec 12, 2024 | — |
| 8-K |
Current report
Other events
|
Dec 3, 2024 | Dec 3, 2024 |
| 144 | Notice of proposed sale | Nov 22, 2024 | — |
| 4 | Insider transaction | Nov 22, 2024 | Nov 22, 2024 |
| 4 | Insider transaction | Nov 20, 2024 | Nov 18, 2024 |
| 3 | Initial insider ownership | Nov 20, 2024 | Nov 14, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| 10-Q | Quarterly report | Oct 31, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2024 | Oct 30, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 24, 2024 | Oct 24, 2024 |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 17, 2024 | Oct 17, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 15, 2024 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Drilling Oil & Gas Wells (SIC 1381)
- Listed as
- RIG (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- Switzerland
- Headquarters
- Steinhausen, Switzerland
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1451505
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.