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 |
|---|---|---|---|
| 424B5 | Prospectus supplement | Sep 26, 2025 | — |
| 424B5 | Prospectus supplement | Sep 24, 2025 | — |
| S-8 | Employee stock plan registration | Aug 5, 2025 | — |
| 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 | — |
| S-3ASR | Automatic shelf registration | Sep 29, 2023 | — |
| S-3ASR | Automatic shelf registration | Sep 1, 2023 | — |
| S-8 | Employee stock plan registration | Jun 16, 2023 | — |
| 424B5 | Prospectus supplement | Aug 5, 2022 | — |
| S-8 | Employee stock plan registration | Jul 9, 2021 | — |
| 424B5 | Prospectus supplement | Jun 14, 2021 | — |
| S-3ASR | Automatic shelf registration | Jun 14, 2021 | — |
| S-3ASR | Automatic shelf registration | Sep 4, 2020 | — |
| S-8 | Employee stock plan registration | May 8, 2020 | — |
| 424B3 | Prospectus | Oct 16, 2018 | — |
| S-8 | Employee stock plan registration | Oct 9, 2018 | — |
| S-4/A | Filing | Oct 9, 2018 | — |
| S-4 | Registration for a merger or exchange | Sep 24, 2018 | — |
| 424B7 | Filing | Jul 11, 2018 | — |
| 424B3 | Prospectus | Mar 8, 2018 | — |
| 424B3 | Prospectus | Feb 21, 2018 | — |
| S-4/A | Filing | Feb 16, 2018 | — |
| S-3ASR | Automatic shelf registration | Feb 6, 2018 | — |
| S-3ASR | Automatic shelf registration | Feb 6, 2018 | — |
| S-4 | Registration for a merger or exchange | Feb 6, 2018 | — |
| 424B3 | Prospectus | Dec 26, 2017 | — |
| S-4/A | Filing | Dec 20, 2017 | — |
| S-4/A | Filing | Dec 8, 2017 | — |
| S-4/A | Filing | Nov 29, 2017 | — |
| S-4/A | Filing | Nov 6, 2017 | — |
| S-4 | Registration for a merger or exchange | Oct 4, 2017 | — |
| S-4MEF | Filing | Nov 22, 2016 | — |
| 424B3 | Prospectus | Oct 6, 2016 | — |
| S-4/A | Filing | Sep 30, 2016 | — |
| S-4/A | Filing | Sep 22, 2016 | — |
| S-4/A | Filing | Sep 14, 2016 | — |
| S-4 | Registration for a merger or exchange | Aug 15, 2016 | — |
Showing 39 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.