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 |
|---|---|---|---|
| 4 | Insider transaction | Jul 7, 2026 | Jul 2, 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 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 144 | Notice of proposed sale | May 21, 2026 | — |
| 4 | Insider transaction | May 5, 2026 | May 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 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 |
| SCHEDULE 13D | Ownership over 5% (active) | Feb 13, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Feb 11, 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 |
| 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 | — |
| 4 | Insider transaction | Dec 8, 2025 | Dec 4, 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 |
| 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 | — |
| 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 | — |
| 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 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Jun 16, 2025 | Jun 13, 2025 |
| 144 | Notice of proposed sale | Jun 13, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 23, 2025 | — |
| 4 | Insider transaction | Apr 14, 2025 | Apr 11, 2025 |
| 144 | Notice of proposed sale | Apr 11, 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 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 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 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 144 | Notice of proposed sale | Dec 12, 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 | — |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 15, 2024 | — |
| 4 | Insider transaction | Sep 13, 2024 | Sep 12, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 12, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 12, 2024 |
| 3 | Initial insider ownership | Aug 12, 2024 | Aug 2, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 2, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 2, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 2, 2024 |
| SC 13G | Ownership over 5% (passive) | Jul 9, 2024 | — |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 17, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 16, 2024 |
| 3 | Initial insider ownership | May 13, 2024 | May 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Feb 29, 2024 | Feb 27, 2024 |
| 4 | Insider transaction | Feb 29, 2024 | Feb 27, 2024 |
| 4 | Insider transaction | Feb 29, 2024 | Feb 27, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 4 | Insider transaction | Feb 12, 2024 | Feb 8, 2024 |
| 4 | Insider transaction | Feb 12, 2024 | Feb 8, 2024 |
| 4 | Insider transaction | Feb 12, 2024 | Feb 8, 2024 |
| 4 | Insider transaction | Feb 12, 2024 | Feb 8, 2024 |
| 4 | Insider transaction | Feb 12, 2024 | Feb 8, 2024 |
| 4 | Insider transaction | Feb 12, 2024 | Feb 8, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| 4 | Insider transaction | Dec 18, 2023 | Dec 14, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 5, 2023 | Aug 31, 2023 |
| 144 | Notice of proposed sale | Aug 31, 2023 | — |
| 4 | Insider transaction | Aug 4, 2023 | Aug 3, 2023 |
| 144 | Notice of proposed sale | Aug 2, 2023 | — |
| 4 | Insider transaction | Jul 20, 2023 | Jul 18, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 15, 2023 | May 12, 2023 |
| 3 | Initial insider ownership | May 15, 2023 | May 11, 2023 |
| 4 | Insider transaction | Apr 25, 2023 | Apr 21, 2023 |
| 4 | Insider transaction | Apr 25, 2023 | Apr 21, 2023 |
| 4 | Insider transaction | Apr 25, 2023 | Apr 21, 2023 |
| 4/A | Filing | Apr 25, 2023 | May 13, 2022 |
| 4/A | Filing | Apr 25, 2023 | May 13, 2022 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 144 | Notice of proposed sale | Apr 17, 2023 | — |
| 4 | Insider transaction | Mar 6, 2023 | Mar 2, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4/A | Filing | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Jan 20, 2023 | Jan 18, 2023 |
| 4 | Insider transaction | Jan 11, 2023 | Jan 10, 2023 |
| 4 | Insider transaction | Jan 10, 2023 | Jan 6, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 19, 2022 | — |
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.