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 |
|---|---|---|---|
| DEFA14A | Additional proxy material | Nov 2, 2026 | — |
| DEFA14A | Additional proxy material | Oct 14, 2026 | — |
| DEFM14A | Filing | Oct 14, 2026 | — |
| DEFA14A | Additional proxy material | Sep 30, 2026 | — |
| DEFA14A | Additional proxy material | Jul 1, 2026 | — |
| DEFA14A | Additional proxy material | May 19, 2026 | — |
| PREM14A | Filing | May 19, 2026 | May 19, 2026 |
| DEFA14A | Additional proxy material | May 5, 2026 | — |
| 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 |
| DEFA14A | Additional proxy material | Feb 17, 2026 | — |
| DEFA14A | Additional proxy material | Feb 11, 2026 | — |
| DEFA14A | Additional proxy material | Feb 10, 2026 | — |
| DEFA14A | Additional proxy material | Feb 9, 2026 | — |
| 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 |
| 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 |
| DEFA14A | Additional proxy material | Mar 21, 2023 | — |
| DEF 14A | Proxy statement | Mar 21, 2023 | — |
| PRE 14A | Preliminary proxy statement | Mar 10, 2023 | — |
| DEFA14A | Additional proxy material | May 4, 2022 | — |
| DEFA14A | Additional proxy material | Apr 21, 2022 | — |
| DEFA14A | Additional proxy material | Mar 28, 2022 | — |
| DEF 14A | Proxy statement | Mar 28, 2022 | Mar 28, 2022 |
| DEFA14A | Additional proxy material | Apr 7, 2021 | — |
| DEF 14A | Proxy statement | Apr 7, 2021 | Apr 7, 2021 |
| DEFA14A | Additional proxy material | Apr 24, 2020 | — |
| DEFA14A | Additional proxy material | Mar 30, 2020 | — |
| DEF 14A | Proxy statement | Mar 30, 2020 | Mar 30, 2020 |
| PRE 14A | Preliminary proxy statement | Mar 3, 2020 | Mar 3, 2020 |
| DEFA14A | Additional proxy material | Mar 11, 2019 | — |
| DEF 14A | Proxy statement | Mar 11, 2019 | Mar 11, 2019 |
| DEFA14A | Additional proxy material | May 7, 2018 | — |
| DEFA14A | Additional proxy material | Apr 17, 2018 | — |
| DEFA14A | Additional proxy material | Apr 13, 2018 | — |
| DEFA14A | Additional proxy material | Mar 20, 2018 | — |
| DEF 14A | Proxy statement | Mar 20, 2018 | May 18, 2018 |
| PRE 14A | Preliminary proxy statement | Mar 8, 2018 | Mar 7, 2018 |
| DEFA14A | Additional proxy material | Jan 17, 2018 | — |
| DEFA14A | Additional proxy material | Jan 9, 2018 | — |
| DEFA14A | Additional proxy material | Jan 5, 2018 | — |
| DEFA14A | Additional proxy material | Dec 20, 2017 | — |
| DEF 14A | Proxy statement | Dec 15, 2017 | Jan 16, 2018 |
| PRE 14A | Preliminary proxy statement | Oct 4, 2017 | Oct 3, 2017 |
| DEFA14A | Additional proxy material | Apr 20, 2017 | — |
| DEFA14A | Additional proxy material | Mar 16, 2017 | — |
| DEF 14A | Proxy statement | Mar 16, 2017 | May 11, 2017 |
| DEFA14A | Additional proxy material | Apr 21, 2016 | — |
Showing 52 filings. 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.