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04 Dec 2025 |
28 Nov 2025 |
001-40611 |
| 4 |
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31 Oct 2025 |
28 Oct 2025 |
001-40611 |
| SCHEDULE 13D/A |
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31 Oct 2025 |
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30 Jan 2023 |
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001-38374 |
| 3 |
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23 Sep 2022 |
09 Sep 2022 |
001-40611 |
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SC 13D/A |
23 Sep 2022 |
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| S-3ASR |
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S-3ASR |
14 Jun 2021 |
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333-257093-01 |
| 424B7 |
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424B7 |
11 Jul 2018 |
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333-222896-01 |
| 424B3 |
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424B3 |
08 Mar 2018 |
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333-222894-01 |
| 425 |
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425 |
08 Mar 2018 |
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424B3 |
21 Feb 2018 |
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333-222894-01 |
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20 Feb 2018 |
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333-222894-01 |
| 425 |
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425 |
20 Feb 2018 |
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425 |
20 Feb 2018 |
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| S-4/A |
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S-4/A |
16 Feb 2018 |
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333-222894-01 |
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425 |
07 Feb 2018 |
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S-3ASR |
06 Feb 2018 |
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333-222896-01 |
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S-3ASR |
06 Feb 2018 |
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333-222895-01 |
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S-4 |
06 Feb 2018 |
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333-222894-01 |
| 425 |
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425 |
30 Jan 2018 |
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NYSE CERT-TRANSOCEAN INC. |
30 Jan 2018 |
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001-38374 |
| 8-A12B |
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8-A12B |
30 Jan 2018 |
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001-38374 |
| 425 |
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425 |
23 Jan 2018 |
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425 |
19 Jan 2018 |
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425 |
19 Jan 2018 |
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425 |
19 Jan 2018 |
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| 424B3 |
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424B3 |
26 Dec 2017 |
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333-220791-01 |
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22 Dec 2017 |
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333-220791-01 |
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425 |
21 Dec 2017 |
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425 |
20 Dec 2017 |
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S-4/A |
20 Dec 2017 |
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333-220791-01 |
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S-4/A |
08 Dec 2017 |
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333-220791-01 |
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05 Dec 2017 |
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S-4/A |
29 Nov 2017 |
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333-220791-01 |
| 425 |
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425 |
22 Nov 2017 |
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333-75899 |
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21 Nov 2017 |
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15 Nov 2017 |
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S-4/A |
06 Nov 2017 |
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333-220791-01 |
| 425 |
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425 |
03 Nov 2017 |
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333-75899 |
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30 Oct 2017 |
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| 425 |
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425 |
10 Oct 2017 |
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333-75899 |
| S-4 |
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S-4 |
04 Oct 2017 |
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333-220791-01 |
| 425 |
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425 |
15 Sep 2017 |
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333-75899 |
| 425 |
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425 |
08 Sep 2017 |
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333-75899 |
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425 |
07 Sep 2017 |
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333-75899 |
| 425 |
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425 |
15 Aug 2017 |
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333-75899 |
| 425 |
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425 |
15 Aug 2017 |
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333-75899 |
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425 |
15 Aug 2017 |
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333-75899 |
| SC TO-I/A |
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SC TO-I/A |
17 Dec 2012 |
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005-60501 |
| SC TO-I |
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SC TO-I |
15 Nov 2012 |
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005-60501 |
| 424B5 |
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424B5 |
11 Sep 2012 |
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333-169401-01 |
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FWP |
11 Sep 2012 |
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333-169401-01 |
| 424B5 |
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424B5 |
10 Sep 2012 |
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333-169401-01 |
| SC TO-I/A |
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SC TO-I/A |
16 Dec 2011 |
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005-60501 |
| 424B5 |
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424B5 |
02 Dec 2011 |
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333-169401-01 |
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FWP |
01 Dec 2011 |
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333-169401-01 |
| 424B5 |
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424B5 |
30 Nov 2011 |
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333-169401-01 |
| SC TO-I |
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SC TO-I |
16 Nov 2011 |
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005-60501 |
| SC TO-I/A |
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AMENDMENT NO. 1 TO SC TO |
16 Dec 2010 |
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005-60501 |
| SC TO-I |
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SCHEDULE TO |
16 Nov 2010 |
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005-60501 |
| 424B5 |
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DEFINITIVE PROSPECTUS SUPPLEMENT |
17 Sep 2010 |
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333-169401-01 |
| FWP |
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FREE WRITING PROSPECTUS |
17 Sep 2010 |
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333-169401-01 |
| 424B3 |
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PRELIMINARY PROSPECTUS SUPPLEMENT |
16 Sep 2010 |
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333-169401-01 |
| S-3ASR |
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FORM S-3 |
16 Sep 2010 |
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333-169401-01 |