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 |
| 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 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change, Shareholder vote results
|
May 26, 2026 | May 22, 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 |
| 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 |
| PRE 14A | Preliminary proxy statement | Mar 20, 2026 | May 22, 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 | — |
| 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 |
| DEFA14A | Additional proxy material | Feb 9, 2026 | — |
| 8-K |
Current report
Other events
|
Feb 9, 2026 | Feb 9, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 5, 2026 | Jan 5, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 8, 2025 | Dec 8, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 18, 2025 | Nov 18, 2025 |
| 10-Q | Quarterly report | Oct 30, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2025 | Oct 29, 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 |
| 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 |
| 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 |
| 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 |
| 10-Q | Quarterly report | Apr 29, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2025 | Apr 28, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 16, 2025 | Apr 16, 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 |
| 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 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 12, 2025 | Feb 12, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 17, 2024 | Dec 17, 2024 |
| 8-K |
Current report
Other events
|
Dec 3, 2024 | Dec 3, 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 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 17, 2024 | Oct 17, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 10, 2024 | Sep 10, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 4, 2024 | Sep 4, 2024 |
| 8-K |
Current report
Impairment, Other events
|
Sep 3, 2024 | Sep 3, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Aug 20, 2024 | Aug 20, 2024 |
| 10-Q | Quarterly report | Aug 1, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 31, 2024 | Jul 31, 2024 |
| 8-K/A |
Amended current report
Regulation FD disclosure
|
Jul 26, 2024 | Jul 24, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 24, 2024 | Jul 24, 2024 |
| S-8 POS | Filing | Jul 5, 2024 | — |
| S-3ASR | Automatic shelf registration | Jul 1, 2024 | — |
| S-8 | Employee stock plan registration | Jun 28, 2024 | — |
| S-3ASR | Automatic shelf registration | Jun 28, 2024 | — |
| 8-K |
Current report
New debt, Unregistered share sale, Bylaw or fiscal year change
|
Jun 28, 2024 | Jun 28, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 26, 2024 | Jun 26, 2024 |
| 8-K |
Current report
Impairment
|
Jun 24, 2024 | Jun 17, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jun 21, 2024 | Jun 18, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 14, 2024 | Jun 14, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 4, 2024 | Jun 4, 2024 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 22, 2024 | May 22, 2024 |
| 8-K |
Current report
Material agreement
|
May 8, 2024 | May 8, 2024 |
| 10-Q | Quarterly report | Apr 30, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2024 | Apr 29, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 18, 2024 | Apr 18, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 17, 2024 | Apr 17, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 11, 2024 | Apr 11, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 1, 2024 | Apr 1, 2024 |
| ARS | Annual report to shareholders | Mar 26, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 26, 2024 | — |
| DEF 14A | Proxy statement | Mar 26, 2024 | May 16, 2024 |
| PRE 14A | Preliminary proxy statement | Mar 15, 2024 | Mar 15, 2024 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change
|
Mar 6, 2024 | Mar 6, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 21, 2024 | Feb 20, 2024 |
| 10-K | Annual report | Feb 21, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2024 | Feb 19, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 14, 2024 | Feb 14, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 11, 2024 | Jan 11, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 12, 2023 | Dec 12, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 22, 2023 | Nov 22, 2023 |
| 10-Q | Quarterly report | Oct 31, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2023 | Oct 30, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 18, 2023 | Oct 18, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 11, 2023 | Oct 11, 2023 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Oct 10, 2023 | Oct 3, 2023 |
| S-3ASR | Automatic shelf registration | Sep 29, 2023 | — |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change, Regulation FD disclosure
|
Sep 14, 2023 | Sep 9, 2023 |
| S-3ASR | Automatic shelf registration | Sep 1, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 30, 2023 | Aug 30, 2023 |
| 10-Q | Quarterly report | Aug 1, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2023 | Jul 31, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 19, 2023 | Jul 19, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 18, 2023 | Jul 18, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 5, 2023 | Jul 5, 2023 |
| 8-K |
Current report
Impairment, Regulation FD disclosure
|
Jun 28, 2023 | Jun 28, 2023 |
| S-8 | Employee stock plan registration | Jun 16, 2023 | — |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 16, 2023 | May 16, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
May 10, 2023 | May 10, 2023 |
| 10-Q | Quarterly report | May 2, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 1, 2023 | May 1, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 18, 2023 | Apr 18, 2023 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change, Other events
|
Apr 10, 2023 | Apr 10, 2023 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Mar 30, 2023 | Mar 30, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 29, 2023 | Mar 29, 2023 |
| ARS | Annual report to shareholders | Mar 23, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 21, 2023 | — |
| DEF 14A | Proxy statement | Mar 21, 2023 | — |
| PRE 14A | Preliminary proxy statement | Mar 10, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 23, 2023 | Feb 22, 2023 |
| 10-K | Annual report | Feb 23, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2023 | Feb 21, 2023 |
| 8-K |
Current report
Impairment
|
Feb 15, 2023 | Feb 15, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 9, 2023 | Feb 9, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 31, 2023 | Jan 31, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 31, 2023 | Jan 31, 2023 |
| 25-NSE | Delisting notice | Jan 30, 2023 | — |
| 8-K |
Current report
Material agreement, New debt
|
Jan 17, 2023 | Jan 17, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 17, 2023 | Jan 17, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 9, 2023 | Jan 9, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 4, 2023 | Jan 4, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 8, 2022 | Dec 8, 2022 |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2022 | Nov 2, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 13, 2022 | Oct 13, 2022 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Sep 30, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change, Regulation FD disclosure
|
Sep 13, 2022 | Sep 13, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 7, 2022 | Sep 7, 2022 |
| 424B5 | Prospectus supplement | Aug 5, 2022 | — |
| 8-K |
Current report
Material agreement
|
Aug 5, 2022 | Aug 5, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 3, 2022 | Aug 3, 2022 |
| 10-Q | Quarterly report | Aug 3, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2022 | Aug 1, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 1, 2022 | Aug 1, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 25, 2022 | Jul 25, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 6, 2022 | Jun 6, 2022 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 13, 2022 | May 13, 2022 |
| DEFA14A | Additional proxy material | May 4, 2022 | — |
| 10-Q | Quarterly report | May 3, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 3, 2022 | May 2, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 25, 2022 | Apr 25, 2022 |
| DEFA14A | Additional proxy material | Apr 21, 2022 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Mar 31, 2022 | Mar 31, 2022 |
| DEFA14A | Additional proxy material | Mar 28, 2022 | — |
| DEF 14A | Proxy statement | Mar 28, 2022 | Mar 28, 2022 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change
|
Mar 16, 2022 | Mar 16, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 23, 2022 | Feb 23, 2022 |
| 10-K | Annual report | Feb 23, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2022 | Feb 22, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 17, 2022 | Feb 17, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 14, 2022 | Feb 14, 2022 |
| 10-Q | Quarterly report | Nov 2, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2021 | Nov 1, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 25, 2021 | Oct 25, 2021 |
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.