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 |
|---|---|---|---|
| 25-NSE | Delisting notice | Jan 30, 2023 | — |
| 425 | Filing | Nov 5, 2018 | — |
| 425 | Filing | Oct 31, 2018 | — |
| 425 | Filing | Oct 31, 2018 | — |
| 425 | Filing | Oct 29, 2018 | — |
| 425 | 8-k | Oct 23, 2018 | — |
| EFFECT | Filing | Oct 16, 2018 | — |
| CORRESP | Letter to the SEC | Oct 11, 2018 | — |
| 425 | Filing | Oct 9, 2018 | — |
| UPLOAD | Letter from the SEC | Oct 5, 2018 | — |
| 425 | Filing | Sep 5, 2018 | — |
| 425 | Filing | Sep 4, 2018 | — |
| 425 | Filing | Sep 4, 2018 | — |
| 425 | Filing | Mar 8, 2018 | — |
| EFFECT | Filing | Feb 20, 2018 | — |
| 425 | Filing | Feb 20, 2018 | — |
| 425 | 8-k | Feb 20, 2018 | — |
| CORRESP | Letter to the SEC | Feb 20, 2018 | — |
| 425 | 8-k | Feb 7, 2018 | — |
| 425 | 8-k | Jan 30, 2018 | — |
| 8-A12B | Filing | Jan 30, 2018 | — |
| 425 | 8-k | Jan 23, 2018 | — |
| 425 | 8-k | Jan 19, 2018 | — |
| 425 | Filing | Jan 19, 2018 | — |
| 425 | 8-k | Jan 18, 2018 | — |
| EFFECT | Filing | Dec 22, 2017 | — |
| UPLOAD | Letter from the SEC | Dec 22, 2017 | — |
| CORRESP | Letter to the SEC | Dec 21, 2017 | — |
| 425 | Filing | Dec 21, 2017 | — |
| 425 | 8-k | Dec 20, 2017 | — |
| PRER14A | Filing | Dec 8, 2017 | — |
| CORRESP | Letter to the SEC | Dec 8, 2017 | — |
| UPLOAD | Letter from the SEC | Dec 5, 2017 | — |
| PRER14A | Filing | Nov 29, 2017 | — |
| CORRESP | Letter to the SEC | Nov 28, 2017 | — |
| 425 | Filing | Nov 22, 2017 | — |
| UPLOAD | Letter from the SEC | Nov 21, 2017 | — |
| UPLOAD | Letter from the SEC | Nov 15, 2017 | — |
| CORRESP | Letter to the SEC | Nov 6, 2017 | — |
| PRER14A | Filing | Nov 6, 2017 | — |
| 425 | Filing | Nov 3, 2017 | — |
| UPLOAD | Letter from the SEC | Oct 30, 2017 | — |
| 425 | Filing | Oct 4, 2017 | — |
| 425 | 8-k | Sep 15, 2017 | — |
| 425 | Filing | Sep 8, 2017 | — |
| 425 | Filing | Sep 7, 2017 | — |
| 425 | Filing | Aug 15, 2017 | — |
| 425 | Filing | Aug 15, 2017 | — |
| 425 | 8-k | Aug 15, 2017 | — |
| NT 10-K | Filing | Mar 1, 2017 | Dec 31, 2016 |
| 425 | 8-k/a | Nov 23, 2016 | — |
| 425 | Filing | Nov 3, 2016 | — |
| EFFECT | Filing | Oct 4, 2016 | — |
| CORRESP | Letter to the SEC | Oct 3, 2016 | — |
| CORRESP | Letter to the SEC | Sep 22, 2016 | — |
| UPLOAD | Letter from the SEC | Sep 21, 2016 | — |
| CORRESP | Letter to the SEC | Sep 14, 2016 | — |
| UPLOAD | Letter from the SEC | Sep 9, 2016 | — |
| UPLOAD | Letter from the SEC | Sep 8, 2016 | — |
| CORRESP | Letter to the SEC | Aug 22, 2016 | — |
| CORRESP | Letter to the SEC | Aug 12, 2016 | — |
| UPLOAD | Letter from the SEC | Aug 8, 2016 | — |
| 425 | Filing | Aug 1, 2016 | — |
| 425 | 8-k | Aug 1, 2016 | — |
Showing 64 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.