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Transocean Ltd SEC Filings
What Transocean Ltd has told the SEC happened, by the 8-K items and forms it filed under: when it reported results, who joined or left, what it bought or sold, and whether its auditor or its accounts ever changed.
RIG overview →Filings on file
168
since Oct 20, 2016
Warning signs
15
latest Aug 27, 2025
Last results
Aug 5, 2026
8-K item 2.02
Industry
Drilling Oil & Gas Wells
SIC 1381
Newest first
Each label is a form type or an 8-K item as filed; each row links to the filing.
| Filed | What it reports | Document |
|---|---|---|
| Oct 15, 2026 | Material agreementNew debt 8-K | Read ↗ |
| Oct 14, 2026 | Merger vote or registration DEFM14A | Read ↗ |
| Aug 7, 2026 | Quarterly report 10-Q | Read ↗ |
| Aug 5, 2026 | Results announced 8-K | Read ↗ |
| May 26, 2026 | Unregistered share saleShareholder vote 8-K | Read ↗ |
| May 19, 2026 | Material agreement 8-K | Read ↗ |
| May 5, 2026 | Quarterly report 10-Q | Read ↗ |
| May 4, 2026 | Results announced 8-K | Read ↗ |
| Feb 23, 2026 | Annual report 10-K | Read ↗ |
| Feb 20, 2026 | Results announced 8-K | Read ↗ |
| Feb 10, 2026 | Material agreement 8-K | Read ↗ |
| Oct 30, 2025 | Quarterly report 10-Q | Read ↗ |
| Oct 29, 2025 | Results announced 8-K | Read ↗ |
| Oct 15, 2025 | Material agreementNew debt 8-K | Read ↗ |
| Sep 26, 2025 | Material agreement 8-K | Read ↗ |
| Aug 27, 2025 | Material impairment 8-K | Read ↗ |
| Aug 19, 2025 | Unregistered share sale 8-K | Read ↗ |
| Aug 11, 2025 | Unregistered share sale 8-K | Read ↗ |
| Aug 5, 2025 | Quarterly report 10-Q | Read ↗ |
| Aug 4, 2025 | Results announced 8-K | Read ↗ |
| Jul 22, 2025 | Unregistered share sale 8-K | Read ↗ |
| Jul 7, 2025 | Unregistered share sale 8-K | Read ↗ |
| Jun 20, 2025 | Unregistered share sale 8-K | Read ↗ |
| Jun 3, 2025 | Material impairmentExecutive or director changeUnregistered share saleShareholder vote 8-K | Read ↗ |
| Apr 29, 2025 | Quarterly report 10-Q | Read ↗ |
| Apr 28, 2025 | Results announced 8-K | Read ↗ |
| Feb 18, 2025 | Annual report 10-K | Read ↗ |
| Feb 18, 2025 | Executive or director change 8-K | Read ↗ |
| Feb 18, 2025 | Results announced 8-K | Read ↗ |
| Oct 31, 2024 | Quarterly report 10-Q | Read ↗ |
| Oct 30, 2024 | Results announced 8-K | Read ↗ |
| Sep 3, 2024 | Material impairment 8-K | Read ↗ |
| Aug 1, 2024 | Quarterly report 10-Q | Read ↗ |
| Jul 31, 2024 | Results announced 8-K | Read ↗ |
| Jun 28, 2024 | New debtUnregistered share sale 8-K | Read ↗ |
| Jun 24, 2024 | Material impairment 8-K | Read ↗ |
| Jun 14, 2024 | Executive or director change 8-K | Read ↗ |
| May 22, 2024 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 8, 2024 | Material agreement 8-K | Read ↗ |
| Apr 30, 2024 | Quarterly report 10-Q | Read ↗ |
| Apr 30, 2024 | Results announced 8-K | Read ↗ |
| Apr 18, 2024 | Material agreementNew debt 8-K | Read ↗ |
| Mar 6, 2024 | Unregistered share sale 8-K | Read ↗ |
| Feb 21, 2024 | Annual report 10-K | Read ↗ |
| Feb 20, 2024 | Results announced 8-K | Read ↗ |
| Nov 22, 2023 | Executive or director change 8-K | Read ↗ |
| Oct 31, 2023 | Quarterly report 10-Q | Read ↗ |
| Oct 31, 2023 | Results announced 8-K | Read ↗ |
| Oct 11, 2023 | Material agreementNew debt 8-K | Read ↗ |
| Oct 10, 2023 | Unregistered share sale 8-K | Read ↗ |
| Sep 14, 2023 | Unregistered share sale 8-K | Read ↗ |
| Aug 1, 2023 | Quarterly report 10-Q | Read ↗ |
| Jul 31, 2023 | Results announced 8-K | Read ↗ |
| Jun 28, 2023 | Material impairment 8-K | Read ↗ |
| May 16, 2023 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 2, 2023 | Quarterly report 10-Q | Read ↗ |
| May 1, 2023 | Results announced 8-K | Read ↗ |
| Apr 10, 2023 | Unregistered share sale 8-K | Read ↗ |
| Feb 23, 2023 | Annual report 10-K | Read ↗ |
| Feb 21, 2023 | Results announced 8-K | Read ↗ |
| Feb 15, 2023 | Material impairment 8-K | Read ↗ |
| Jan 31, 2023 | Material agreementNew debt 8-K | Read ↗ |
| Jan 30, 2023 | Delisting 25-NSE | Read ↗ |
| Jan 17, 2023 | Material agreementNew debt 8-K | Read ↗ |
| Nov 4, 2022 | Quarterly report 10-Q | Read ↗ |
| Nov 2, 2022 | Results announced 8-K | Read ↗ |
| Sep 30, 2022 | Material agreementNew debtUnregistered share sale 8-K | Read ↗ |
| Sep 13, 2022 | Unregistered share sale 8-K | Read ↗ |
| Aug 5, 2022 | Material agreement 8-K | Read ↗ |
| Aug 3, 2022 | Quarterly report 10-Q | Read ↗ |
| Aug 1, 2022 | Results announced 8-K | Read ↗ |
| Aug 1, 2022 | Material agreementNew debt 8-K | Read ↗ |
| May 13, 2022 | Shareholder vote 8-K | Read ↗ |
| May 3, 2022 | Quarterly report 10-Q | Read ↗ |
| May 3, 2022 | Results announced 8-K | Read ↗ |
| Mar 16, 2022 | Unregistered share sale 8-K | Read ↗ |
| Feb 23, 2022 | Annual report 10-K | Read ↗ |
| Feb 22, 2022 | Results announced 8-K | Read ↗ |
| Feb 17, 2022 | Executive or director change 8-K | Read ↗ |
| Nov 2, 2021 | Quarterly report 10-Q | Read ↗ |
| Nov 1, 2021 | Results announced 8-K | Read ↗ |
| Aug 3, 2021 | Quarterly report 10-Q | Read ↗ |
| Aug 2, 2021 | Results announced 8-K | Read ↗ |
| Jun 15, 2021 | Material agreement 8-K | Read ↗ |
| Jun 7, 2021 | Material agreementNew debt 8-K | Read ↗ |
| Jun 1, 2021 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 4, 2021 | Quarterly report 10-Q | Read ↗ |
| May 3, 2021 | Results announced 8-K | Read ↗ |
| Apr 7, 2021 | Unregistered share sale 8-K | Read ↗ |
| Mar 1, 2021 | Annual report 10-K | Read ↗ |
| Feb 26, 2021 | Material agreementNew debtUnregistered share sale 8-K | Read ↗ |
| Feb 22, 2021 | Results announced 8-K | Read ↗ |
| Nov 4, 2020 | Quarterly report 10-Q | Read ↗ |
| Nov 2, 2020 | Results announced 8-K | Read ↗ |
| Oct 19, 2020 | Delisting notice or listing transfer 8-K | Read ↗ |
| Oct 7, 2020 | Debt accelerated 8-K | Read ↗ |
| Sep 11, 2020 | Material agreementNew debt 8-K | Read ↗ |
| Sep 8, 2020 | Debt accelerated 8-K | Read ↗ |
| Aug 14, 2020 | Material agreementNew debtUnregistered share sale 8-K | Read ↗ |
| Jul 30, 2020 | Quarterly report 10-Q | Read ↗ |
| Jul 29, 2020 | Results announced 8-K | Read ↗ |
| May 11, 2020 | Material impairmentExecutive or director changeUnregistered share saleShareholder vote 8-K | Read ↗ |
| Apr 30, 2020 | Quarterly report 10-Q | Read ↗ |
| Apr 29, 2020 | Results announced 8-K | Read ↗ |
| Feb 18, 2020 | Annual report 10-K | Read ↗ |
| Feb 18, 2020 | Results announced 8-K | Read ↗ |
| Jan 17, 2020 | Material agreementNew debt 8-K | Read ↗ |
| Oct 29, 2019 | Quarterly report 10-Q | Read ↗ |
| Oct 28, 2019 | Results announced 8-K | Read ↗ |
| Sep 3, 2019 | Material impairment 8-K | Read ↗ |
| Jul 30, 2019 | Quarterly report 10-Q | Read ↗ |
| Jul 29, 2019 | Material agreementNew debt 8-K | Read ↗ |
| Jul 29, 2019 | Results announced 8-K | Read ↗ |
| Jul 15, 2019 | Material agreementNew debt 8-K | Read ↗ |
| May 29, 2019 | Material agreementNew debt 8-K | Read ↗ |
| May 13, 2019 | Material agreementNew debtShareholder vote 8-K | Read ↗ |
| Apr 30, 2019 | Quarterly report 10-Q | Read ↗ |
| Apr 29, 2019 | Results announced 8-K | Read ↗ |
| Feb 19, 2019 | Annual report 10-K | Read ↗ |
| Feb 19, 2019 | Results announced 8-K | Read ↗ |
| Feb 1, 2019 | Material agreementNew debt 8-K | Read ↗ |
| Nov 29, 2018 | Shareholder vote 8-K | Read ↗ |
| Oct 30, 2018 | Quarterly report 10-Q | Read ↗ |
| Oct 29, 2018 | Results announced 8-K | Read ↗ |
| Sep 24, 2018 | Merger vote or registration S-4 | Read ↗ |
| Sep 4, 2018 | Material agreement 8-K | Read ↗ |
| Aug 14, 2018 | Executive or director change 8-K | Read ↗ |
| Jul 31, 2018 | Quarterly report 10-Q | Read ↗ |
| Jul 30, 2018 | Results announced 8-K | Read ↗ |
| Jul 24, 2018 | Material agreementNew debt 8-K | Read ↗ |
| Jul 17, 2018 | Material agreementNew debt 8-K | Read ↗ |
| Jun 27, 2018 | Material agreementNew debt 8-K | Read ↗ |
| Jun 14, 2018 | Material impairment 8-K | Read ↗ |
| Jun 7, 2018 | Executive or director change 8-K | Read ↗ |
| May 21, 2018 | Shareholder vote 8-K | Read ↗ |
| May 1, 2018 | Quarterly report 10-Q | Read ↗ |
| Apr 30, 2018 | Results announced 8-K | Read ↗ |
| Feb 21, 2018 | Annual report 10-K | Read ↗ |
| Feb 20, 2018 | Results announced 8-K | Read ↗ |
| Feb 6, 2018 | Merger vote or registration S-4 | Read ↗ |
| Jan 30, 2018 | Executive or director changeMaterial agreementNew debtUnregistered share sale 8-K | Read ↗ |
| Jan 19, 2018 | Shareholder vote 8-K | Read ↗ |
| Dec 20, 2017 | Material agreementUnregistered share sale 8-K | Read ↗ |
| Nov 1, 2017 | Quarterly report 10-Q | Read ↗ |
| Nov 1, 2017 | Results announced 8-K | Read ↗ |
| Oct 17, 2017 | Material agreement 8-K | Read ↗ |
| Oct 4, 2017 | Executive or director change 8-K | Read ↗ |
| Oct 4, 2017 | Merger vote or registration S-4 | Read ↗ |
| Sep 27, 2017 | Material impairment 8-K | Read ↗ |
| Sep 15, 2017 | Material agreement 8-K | Read ↗ |
| Sep 11, 2017 | Shareholder vote 8-K/A | Read ↗ |
| Aug 15, 2017 | Material agreement 8-K | Read ↗ |
| Aug 2, 2017 | Quarterly report 10-Q | Read ↗ |
| Aug 2, 2017 | Results announced 8-K | Read ↗ |
| May 30, 2017 | Material impairment 8-K | Read ↗ |
| May 12, 2017 | Shareholder vote 8-K | Read ↗ |
| May 3, 2017 | Quarterly report 10-Q | Read ↗ |
| May 3, 2017 | Results announced 8-K | Read ↗ |
| Mar 7, 2017 | Annual report 10-K | Read ↗ |
| Mar 1, 2017 | Late filing notice NT 10-K | Read ↗ |
| Feb 23, 2017 | Results announced 8-K | Read ↗ |
| Dec 9, 2016 | Acquisition or sale completed 8-K | Read ↗ |
| Dec 8, 2016 | Material agreement 8-K | Read ↗ |
| Nov 23, 2016 | Material agreement 8-K/A | Read ↗ |
| Nov 21, 2016 | Material agreement 8-K | Read ↗ |
| Nov 2, 2016 | Quarterly report 10-Q | Read ↗ |
| Nov 2, 2016 | Results announced 8-K | Read ↗ |
| Oct 20, 2016 | Material agreement 8-K | Read ↗ |
Source: Transocean Ltd's EDGAR filing history, the last ten years. The labels are the form types and 8-K item numbers the company filed under, not a reading of what it wrote — an item 5.02 can be a chief executive fired or a director retiring on schedule — so each row links to the filing.