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RIG US​
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Logo
  • Home
  • AI Agent
  • Annotations
  • Files
  • Pricing and plans
  • BlogAboutContact us
    APIMCP
    Terms of servicePrivacy policy

  • Get the full experience

    We save the real magic for signed-in users.

RIG US​
HomeStock ScreenerDocument SearchChartingWatchlistsRecent Filings

Transocean Ltd.(RIG US)

$5.54+0.224.14%Ext:$5.36-0.183.30%(Market Closed · 01:00:03 UTC)
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Transocean Ltd.(RIG US)

$5.54+0.224.14%Ext:$5.36-0.183.30%(Market Closed · 01:00:03 UTC)
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Doc SearchProfileEntity StructureFinancialsChartingShort InterestEmployees

Overview

ProfileEntity Structure

Documents

SEC Filings
Categorized
Chronological
By Owner

Financials & Metrics

FinancialsChartingShort InterestEmployees
Chronological
By Owner

Financials & Metrics

FinancialsChartingShort InterestEmployees

SEC Filings by Owner

SEC Filings by Owner

Insider Ownership

Tonnel David A(52)

  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership5 Sep 2023
  • Form 4Statement of changes in beneficial ownership20 Jul 2023
  • Form 4Statement of changes in beneficial ownership19 Apr 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership17 Feb 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023
  • Form 4Statement of changes in beneficial ownership3 Feb 2023
  • Form 4Statement of changes in beneficial ownership20 Jan 2023

Long Brady K(34)

  • Form 4Statement of changes in beneficial ownership22 May
  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership28 Jan
  • Form 4Statement of changes in beneficial ownership28 Oct 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024

DAVIS HOWARD E(32)

  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership18 Dec 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023
  • Form 4Statement of changes in beneficial ownership30 Nov 2022
  • Form 4/AStatement of changes in beneficial ownership (amendment)9 Dec 2022
  • Form 4OWNERSHIP DOCUMENT3 Mar 2022
  • Form 4Statement of changes in beneficial ownership14 Feb 2022
  • Form 4Statement of changes in beneficial ownership11 May 2021

THIGPEN JEREMY D(32)

  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership1 Dec 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023

CHANG VANESSA C L(30)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership2 May 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership27 Jun 2022
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership13 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020

Adamson Keelan(29)

  • Form 4Statement of changes in beneficial ownership5 May
  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership28 Jan
  • Form 4Statement of changes in beneficial ownership8 Dec 2025
  • Form 4Statement of changes in beneficial ownership28 Oct 2025
  • Form 4Statement of changes in beneficial ownership2 May 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025

Mohn Frederik Wilhelm(28)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership25 Nov 2025
  • Form 4Statement of changes in beneficial ownership30 Sep 2025
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership13 Sep 2024
  • Form 4Statement of changes in beneficial ownership5 Aug 2024
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership29 Feb 2024
  • Form 4Statement of changes in beneficial ownership19 Sep 2023
  • Form 4Statement of changes in beneficial ownership15 May 2023

Mey Mark-Anthony Lovell(27)

  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership4 Aug 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023
  • Form 4OWNERSHIP DOCUMENT3 Mar 2022
  • Form 4Statement of changes in beneficial ownership14 Feb 2022
  • Form 4Statement of changes in beneficial ownership11 May 2021
  • Form 4Statement of changes in beneficial ownership3 Mar 2021
  • Form 4Statement of changes in beneficial ownership4 Mar 2021

DEATON CHAD C(22)

  • Form 4Statement of changes in beneficial ownership7 Jul
  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership6 Mar 2023
  • Form 4Statement of changes in beneficial ownership14 Nov 2022
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020

Toma Ihab Magdy(22)

  • Form 4Statement of changes in beneficial ownership5 Dec 2013
  • Form 4Statement of changes in beneficial ownership19 Nov 2013
  • Form 4Statement of changes in beneficial ownership1 Mar 2013
  • Form 4Statement of changes in beneficial ownership15 Feb 2013
  • Form 4Statement of changes in beneficial ownership13 Feb 2013
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 Feb 2013
  • Form 4PRIMARY DOCUMENT20 Nov 2012
  • Form 4PRIMARY DOCUMENT17 Aug 2012
  • Form 4PRIMARY DOCUMENT21 Feb 2012
  • Form 4PRIMARY DOCUMENT13 Feb 2012

MULLER EDWARD R(21)

  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 5Annual statement of beneficial ownership14 Feb 2022
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership9 Mar 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership11 Mar 2020
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016

Perestroika(21)

  • Form 4Statement of changes in beneficial ownership25 Nov 2025
  • Form 4Statement of changes in beneficial ownership30 Sep 2025
  • Form 4Statement of changes in beneficial ownership13 Sep 2024
  • Form 4Statement of changes in beneficial ownership5 Aug 2024
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership29 Feb 2024
  • Form 4Statement of changes in beneficial ownership19 Sep 2023
  • Form 4Statement of changes in beneficial ownership25 Apr 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4/AStatement of changes in beneficial ownership (amendment)25 Apr 2023

Newman Steven L(20)

  • Form 4Statement of changes in beneficial ownership2 Dec 2014
  • Form 4Statement of changes in beneficial ownership4 Mar 2014
  • Form 4Statement of changes in beneficial ownership18 Feb 2014
  • Form 4Statement of changes in beneficial ownership11 Feb 2014
  • Form 4Statement of changes in beneficial ownership19 Dec 2013
  • Form 4Statement of changes in beneficial ownership1 Mar 2013
  • Form 4Statement of changes in beneficial ownership15 Feb 2013
  • Form 4Statement of changes in beneficial ownership13 Feb 2013
  • Form 4PRIMARY DOCUMENT21 Feb 2012
  • Form 4PRIMARY DOCUMENT13 Feb 2012

Barker Glyn Anthony(20)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017

Stobart John B(18)

  • Form 4Statement of changes in beneficial ownership5 Mar 2018
  • Form 4Statement of changes in beneficial ownership12 Feb 2018
  • Form 4Statement of changes in beneficial ownership3 Mar 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)2 Mar 2017
  • Form 4Statement of changes in beneficial ownership13 Feb 2017
  • Form 4Statement of changes in beneficial ownership3 Mar 2016
  • Form 4Statement of changes in beneficial ownership16 Feb 2016
  • Form 4Statement of changes in beneficial ownership5 Oct 2015
  • Form 4Statement of changes in beneficial ownership18 Feb 2015
  • Form 4Statement of changes in beneficial ownership2 Oct 2014

Mackenzie Roderick James(18)

  • Form 4Statement of changes in beneficial ownership5 Mar
  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership5 Dec 2025
  • Form 4Statement of changes in beneficial ownership4 Nov 2025
  • Form 4Statement of changes in beneficial ownership16 Jun 2025
  • Form 4Statement of changes in beneficial ownership12 May 2025
  • Form 4Statement of changes in beneficial ownership14 Apr 2025
  • Form 4Statement of changes in beneficial ownership12 Mar 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025

INTRIERI VINCENT J(17)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership8 May 2019
  • Form 4Statement of changes in beneficial ownership17 Aug 2018

MERKSAMER SAMUEL J.(17)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017

Curado Frederico F.(16)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017

MCNAMARA MARTIN B(15)

  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016
  • Form 4Statement of changes in beneficial ownership12 May 2016
  • Form 4Statement of changes in beneficial ownership19 May 2015
  • Form 4Statement of changes in beneficial ownership19 May 2014
  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4Statement of changes in beneficial ownership8 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT9 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011

Tan Ek Kia(12)

  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016
  • Form 4Statement of changes in beneficial ownership12 May 2016
  • Form 4Statement of changes in beneficial ownership19 May 2015
  • Form 4Statement of changes in beneficial ownership19 May 2014
  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012

Perestroika (Cyprus) Ltd(12)

  • Form 4Statement of changes in beneficial ownership25 Nov 2025
  • Form 4Statement of changes in beneficial ownership30 Sep 2025
  • Form 4Statement of changes in beneficial ownership13 Sep 2024
  • Form 4Statement of changes in beneficial ownership5 Aug 2024
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership29 Feb 2024
  • Form 4Statement of changes in beneficial ownership19 Sep 2023
  • Form 4Statement of changes in beneficial ownership25 Apr 2023
  • Form 4Statement of changes in beneficial ownership14 Dec 2022
  • Form 4Statement of changes in beneficial ownership18 Aug 2020

Ikaheimonen Esa(9)

  • Form 4Statement of changes in beneficial ownership18 Feb 2015
  • Form 4Statement of changes in beneficial ownership17 Nov 2014
  • Form 4Statement of changes in beneficial ownership4 Mar 2014
  • Form 4Statement of changes in beneficial ownership18 Feb 2014
  • Form 4/AStatement of changes in beneficial ownership (amendment)19 Nov 2013
  • Form 4Statement of changes in beneficial ownership18 Nov 2013
  • Form 4Statement of changes in beneficial ownership15 Feb 2013
  • Form 3PRIMARY DOCUMENT16 Nov 2012
  • Form 4PRIMARY DOCUMENT16 Nov 2012

Vayda Robert Thaddeus(9)

  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership1 Dec 2025
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 3Initial statement of beneficial ownership13 May 2024

CASON THOMAS W(8)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4Statement of changes in beneficial ownership11 Jan 2013
  • Form 4/AStatement of changes in beneficial ownership (amendment)1 Mar 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT3 Mar 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

STRACHAN IAN(8)

  • Form 4Statement of changes in beneficial ownership19 May 2014
  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4Statement of changes in beneficial ownership8 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT9 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

MILLER MERRILL A JR(8)

  • Form 4Statement of changes in beneficial ownership15 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016
  • Form 4Statement of changes in beneficial ownership12 May 2016
  • Form 4Statement of changes in beneficial ownership19 May 2015
  • Form 4Statement of changes in beneficial ownership17 Nov 2014
  • Form 3Initial statement of beneficial ownership2 Oct 2014

Briscoe John H(8)

  • Form 4PRIMARY DOCUMENT23 Feb 2011
  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 4PRIMARY DOCUMENT19 Nov 2010
  • Form 4PRIMARY DOCUMENT23 Jul 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT14 Aug 2009
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

ROSA RICARDO H.(7)

  • Form 4/APRIMARY DOCUMENT2 Dec 2011
  • Form 4PRIMARY DOCUMENT17 Nov 2011
  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 5PRIMARY DOCUMENT7 Jan 2011
  • Form 4PRIMARY DOCUMENT19 Nov 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 3PRIMARY DOCUMENT1 Sep 2009

Pack Jason(7)

  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 3Initial statement of beneficial ownership12 Aug 2024

CAUTHEN GREGORY L(6)

  • Form 4PRIMARY DOCUMENT3 Jul 2012
  • Form 4PRIMARY DOCUMENT10 Jan 2012
  • Form 3PRIMARY DOCUMENT10 Jan 2012
  • Form 4PRIMARY DOCUMENT2 Sep 2009
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Deeming Nicholas(6)

  • Form 4PRIMARY DOCUMENT21 Feb 2012
  • Form 4PRIMARY DOCUMENT13 Feb 2012
  • Form 4PRIMARY DOCUMENT8 Feb 2012
  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 4PRIMARY DOCUMENT8 Feb 2011
  • Form 3PRIMARY DOCUMENT8 Feb 2011

Bonno Terry(6)

  • Form 4Statement of changes in beneficial ownership3 Mar 2017
  • Form 4Statement of changes in beneficial ownership13 Feb 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)2 Mar 2017
  • Form 4Statement of changes in beneficial ownership3 Mar 2016
  • Form 4Statement of changes in beneficial ownership16 Feb 2016
  • Form 3Initial statement of beneficial ownership26 Aug 2015

TALBERT J MICHAEL(5)

  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009
  • Form 4/APRIMARY DOCUMENT19 Mar 2009

BROWN ERIC B(5)

  • Form 4PRIMARY DOCUMENT23 Jul 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT16 Feb 2010
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Sprague Robert M(5)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

Sjobring Lars(5)

  • Form 4Statement of changes in beneficial ownership23 Sep 2015
  • Form 4Statement of changes in beneficial ownership4 Mar 2015
  • Form 4Statement of changes in beneficial ownership18 Feb 2015
  • Form 3Initial statement of beneficial ownership3 Mar 2014
  • Form 4Statement of changes in beneficial ownership3 Mar 2014

DELL'OSSO DOMENIC J JR(5)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 3Initial statement of beneficial ownership15 May 2023

Katz Allen M(5)

  • Form 4Statement of changes in beneficial ownership3 Jan 2014
  • Form 4Statement of changes in beneficial ownership19 Nov 2013
  • Form 4/APRIMARY DOCUMENT26 Nov 2012
  • Form 4PRIMARY DOCUMENT20 Nov 2012
  • Form 3PRIMARY DOCUMENT20 Nov 2012

Oevrum Margareth(5)

  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 3Initial statement of beneficial ownership2 Jun 2021

De Saint Victor Diane(5)

  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership23 Jun 2021
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 3Initial statement of beneficial ownership12 May 2020

WHITMIRE JOHN L(4)

  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT3 Mar 2010
  • Form 4PRIMARY DOCUMENT19 May 2009
  • Form 4PRIMARY DOCUMENT20 Jan 2009

GRIJALVA VICTOR(4)

  • Form 4PRIMARY DOCUMENT15 Apr 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT28 Aug 2009
  • Form 4PRIMARY DOCUMENT19 May 2009

RICHARD C D(4)

  • Form 4PRIMARY DOCUMENT2 Jun 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT16 Feb 2010
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Bobillier Arnaud A Y(4)

  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 4PRIMARY DOCUMENT19 Nov 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Saltiel Robert J.(4)

  • Form 4PRIMARY DOCUMENT16 Dec 2009
  • Form 4PRIMARY DOCUMENT14 Aug 2009
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Bindra Jagjeet S.(4)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 3PRIMARY DOCUMENT13 May 2011

Burrard-Lucas Stephen Charles(4)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 3PRIMARY DOCUMENT13 May 2011

LONG ROBERT L(3)

  • Form 4PRIMARY DOCUMENT3 Mar 2010
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

ANDERSON W RICHARD(3)

  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

Transocean Ltd.(3)

  • Form 4Statement of changes in beneficial ownership4 Dec 2025
  • Form 4Statement of changes in beneficial ownership31 Oct 2025
  • Form 3Initial statement of beneficial ownership23 Sep 2022

Munro Michael F(3)

  • Form 4PRIMARY DOCUMENT20 Nov 2012
  • Form 3/APRIMARY DOCUMENT13 Nov 2012
  • Form 3PRIMARY DOCUMENT6 Nov 2012

Lacey William F.(3)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 3Initial statement of beneficial ownership2 Jun 2025

GEORGE RICHARD L(2)

  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

ROSE ROBERT E(2)

  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

Shaw Robert S(2)

  • Form 3PRIMARY DOCUMENT2 Dec 2011
  • Form 4PRIMARY DOCUMENT2 Dec 2011

Schwab David M(1)

  • Form 3PRIMARY DOCUMENT6 Nov 2012

≥5% Ownership

ICAHN CARL C(14)

  • SC 13D/ATransocean Ltd.28 Sep 2016
  • SC 13D/ATransocean Ltd.12 Nov 2013
  • SC 13D/ATransocean Ltd.17 May 2013
  • SC 13D/ATransocean Ltd.13 May 2013
  • SC 13D/ATransocean Ltd.2 May 2013
  • SC 13D/ATransocean Ltd.30 Apr 2013
  • SC 13D/ATransocean Ltd.26 Apr 2013
  • SC 13D/ATransocean Ltd.19 Apr 2013
  • SC 13D/ATransocean Ltd.17 Apr 2013
  • SC 13D/ATransocean Ltd.4 Apr 2013

VANGUARD GROUP INC(13)

  • SC 13G/ATransocean Ltd.27 Mar
  • SC 13G/ATransocean Ltd.13 Feb 2024
  • SC 13G/ATransocean Ltd.9 Feb 2023
  • SC 13G/ATransocean Ltd.10 Feb 2022
  • SC 13G/ATransocean Ltd.10 Feb 2021
  • SC 13G/ATransocean Ltd.12 Feb 2020
  • SC 13G/ATransocean Ltd.12 Feb 2019
  • SC 13G/ATransocean Ltd.8 Feb 2018
  • SC 13G/ATransocean Ltd.10 Feb 2017
  • SC 13G/ATransocean Ltd.10 Feb 2016

BlackRock Inc.(13)

  • SC 13G/ATransocean Ltd.12 Jul 2021
  • SC 13G/ATransocean Ltd.1 Feb 2021
  • SC 13G/ATransocean Ltd.10 Jul 2020
  • SC 13G/ATransocean Ltd.10 Feb 2020
  • SC 13G/ATransocean Ltd.11 Jan 2019
  • SC 13G/ATransocean Ltd.10 Jan 2019
  • SC 13G/ATransocean Ltd.30 Jan 2018
  • SC 13GTransocean Ltd.30 Jan 2017
  • SC 13G/ATransocean Ltd.8 Apr 2016
  • SC 13G/ATransocean Ltd.27 Jan 2016

PRIMECAP MANAGEMENT CO/CA/(11)

  • SC 13G/ATransocean Ltd.14 Aug 2025
  • SC 13G/ATransocean Ltd.12 Feb 2024
  • SC 13G/ATransocean Ltd.9 Feb 2023
  • SC 13G/ATransocean Ltd.10 Feb 2022
  • SC 13G/ATransocean Ltd.12 Feb 2021
  • SC 13G/ATransocean Ltd.12 Feb 2020
  • SC 13G/ATransocean Ltd.8 Feb 2019
  • SC 13GTransocean Ltd.7 Aug 2018
  • SC 13G/ATransocean Ltd.7 Dec 2015
  • SC 13G/ATransocean Ltd.13 Feb 2015

Perestroika(8)

  • SC 13D/ATransocean Ltd.19 Dec 2022
  • SC 13D/ATransocean Ltd.17 May 2022
  • SC 13D/ATransocean Ltd.24 Jun 2021
  • SC 13D/ATransocean Ltd.18 Aug 2020
  • SC 13D/ATransocean Ltd.4 Sep 2018
  • SC 13D/ATransocean Ltd.3 Jul 2018
  • SC 13D/ATransocean Ltd.18 Jun 2018
  • SC 13DTransocean Ltd.5 Feb 2018

Transocean Ltd.(4)

  • SC 13DValaris Ltd13 Feb
  • SC 13D/ANauticus Robotics, Inc.4 Dec 2025
  • SC 13GTransocean Partners LLC3 Feb 2016
  • SC 13GTransocean Partners LLC6 Feb 2015

FMR LLC(3)

  • SC 13G/ATransocean Ltd.12 Dec 2011
  • SC 13G/ATransocean Ltd.8 Apr 2011
  • SC 13GTransocean Ltd.14 Feb 2011

MARSICO CAPITAL MANAGEMENT LLC(3)

  • SC 13G/ATransocean Ltd.11 Feb 2011
  • SC 13G/ATransocean Ltd.12 Feb 2010
  • SC 13G/ATransocean Ltd.13 Feb 2009

BlackRock, Inc.(3)

  • SC 13G/ATransocean Ltd.23 Apr 2025
  • SC 13GTransocean Ltd.8 Nov 2024
  • SC 13GTransocean Ltd.22 Oct 2024

STATE STREET CORP(2)

  • SC 13G/ATransocean Ltd.13 Feb 2018
  • SC 13GTransocean Ltd.10 Feb 2017

D. E. SHAW & CO, L.P.(2)

  • SC 13G/ATransocean Ltd.14 Feb 2023
  • SC 13GTransocean Ltd.25 Nov 2022

Capital World Investors(2)

  • SC 13G/ATransocean Ltd.13 Feb 2025
  • SC 13GTransocean Ltd.13 Nov 2024

Hayfin Special Opportunities Fund II LP(2)

  • SC 13G/ATransocean Ltd.15 Oct 2024
  • SC 13GTransocean Ltd.9 Jul 2024

Asia Research & Capital Management Ltd(2)

  • SC 13GTransocean Ltd.12 Dec 2018
  • SC 13GTransocean Ltd.8 Feb 2018

Mohn Frederik Wilhelm(2)

  • SC 13D/ATransocean Ltd.11 Feb
  • SC 13D/ATransocean Ltd.30 Sep 2025

CANYON CAPITAL ADVISORS LLC(1)

  • SC 13G/ATransocean Ltd.14 Feb 2019

Insider Ownership

Tonnel David A(52)

  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership5 Sep 2023
  • Form 4Statement of changes in beneficial ownership20 Jul 2023
  • Form 4Statement of changes in beneficial ownership19 Apr 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership17 Feb 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023
  • Form 4Statement of changes in beneficial ownership3 Feb 2023
  • Form 4Statement of changes in beneficial ownership20 Jan 2023

Long Brady K(34)

  • Form 4Statement of changes in beneficial ownership22 May
  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership28 Jan
  • Form 4Statement of changes in beneficial ownership28 Oct 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024

DAVIS HOWARD E(32)

  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership18 Dec 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023
  • Form 4Statement of changes in beneficial ownership30 Nov 2022
  • Form 4/AStatement of changes in beneficial ownership (amendment)9 Dec 2022
  • Form 4OWNERSHIP DOCUMENT3 Mar 2022
  • Form 4Statement of changes in beneficial ownership14 Feb 2022
  • Form 4Statement of changes in beneficial ownership11 May 2021

THIGPEN JEREMY D(32)

  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership1 Dec 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023

CHANG VANESSA C L(30)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership2 May 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership27 Jun 2022
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership13 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020

Adamson Keelan(29)

  • Form 4Statement of changes in beneficial ownership5 May
  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership28 Jan
  • Form 4Statement of changes in beneficial ownership8 Dec 2025
  • Form 4Statement of changes in beneficial ownership28 Oct 2025
  • Form 4Statement of changes in beneficial ownership2 May 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025

Mohn Frederik Wilhelm(28)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership25 Nov 2025
  • Form 4Statement of changes in beneficial ownership30 Sep 2025
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership13 Sep 2024
  • Form 4Statement of changes in beneficial ownership5 Aug 2024
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership29 Feb 2024
  • Form 4Statement of changes in beneficial ownership19 Sep 2023
  • Form 4Statement of changes in beneficial ownership15 May 2023

Mey Mark-Anthony Lovell(27)

  • Form 4Statement of changes in beneficial ownership5 Mar 2024
  • Form 4Statement of changes in beneficial ownership12 Feb 2024
  • Form 4Statement of changes in beneficial ownership4 Aug 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2023
  • Form 4Statement of changes in beneficial ownership13 Feb 2023
  • Form 4OWNERSHIP DOCUMENT3 Mar 2022
  • Form 4Statement of changes in beneficial ownership14 Feb 2022
  • Form 4Statement of changes in beneficial ownership11 May 2021
  • Form 4Statement of changes in beneficial ownership3 Mar 2021
  • Form 4Statement of changes in beneficial ownership4 Mar 2021

DEATON CHAD C(22)

  • Form 4Statement of changes in beneficial ownership7 Jul
  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership6 Mar 2023
  • Form 4Statement of changes in beneficial ownership14 Nov 2022
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020

Toma Ihab Magdy(22)

  • Form 4Statement of changes in beneficial ownership5 Dec 2013
  • Form 4Statement of changes in beneficial ownership19 Nov 2013
  • Form 4Statement of changes in beneficial ownership1 Mar 2013
  • Form 4Statement of changes in beneficial ownership15 Feb 2013
  • Form 4Statement of changes in beneficial ownership13 Feb 2013
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 Feb 2013
  • Form 4PRIMARY DOCUMENT20 Nov 2012
  • Form 4PRIMARY DOCUMENT17 Aug 2012
  • Form 4PRIMARY DOCUMENT21 Feb 2012
  • Form 4PRIMARY DOCUMENT13 Feb 2012

MULLER EDWARD R(21)

  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 5Annual statement of beneficial ownership14 Feb 2022
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership9 Mar 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership11 Mar 2020
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016

Perestroika(21)

  • Form 4Statement of changes in beneficial ownership25 Nov 2025
  • Form 4Statement of changes in beneficial ownership30 Sep 2025
  • Form 4Statement of changes in beneficial ownership13 Sep 2024
  • Form 4Statement of changes in beneficial ownership5 Aug 2024
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership29 Feb 2024
  • Form 4Statement of changes in beneficial ownership19 Sep 2023
  • Form 4Statement of changes in beneficial ownership25 Apr 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4/AStatement of changes in beneficial ownership (amendment)25 Apr 2023

Newman Steven L(20)

  • Form 4Statement of changes in beneficial ownership2 Dec 2014
  • Form 4Statement of changes in beneficial ownership4 Mar 2014
  • Form 4Statement of changes in beneficial ownership18 Feb 2014
  • Form 4Statement of changes in beneficial ownership11 Feb 2014
  • Form 4Statement of changes in beneficial ownership19 Dec 2013
  • Form 4Statement of changes in beneficial ownership1 Mar 2013
  • Form 4Statement of changes in beneficial ownership15 Feb 2013
  • Form 4Statement of changes in beneficial ownership13 Feb 2013
  • Form 4PRIMARY DOCUMENT21 Feb 2012
  • Form 4PRIMARY DOCUMENT13 Feb 2012

Barker Glyn Anthony(20)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017

Stobart John B(18)

  • Form 4Statement of changes in beneficial ownership5 Mar 2018
  • Form 4Statement of changes in beneficial ownership12 Feb 2018
  • Form 4Statement of changes in beneficial ownership3 Mar 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)2 Mar 2017
  • Form 4Statement of changes in beneficial ownership13 Feb 2017
  • Form 4Statement of changes in beneficial ownership3 Mar 2016
  • Form 4Statement of changes in beneficial ownership16 Feb 2016
  • Form 4Statement of changes in beneficial ownership5 Oct 2015
  • Form 4Statement of changes in beneficial ownership18 Feb 2015
  • Form 4Statement of changes in beneficial ownership2 Oct 2014

Mackenzie Roderick James(18)

  • Form 4Statement of changes in beneficial ownership5 Mar
  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership5 Dec 2025
  • Form 4Statement of changes in beneficial ownership4 Nov 2025
  • Form 4Statement of changes in beneficial ownership16 Jun 2025
  • Form 4Statement of changes in beneficial ownership12 May 2025
  • Form 4Statement of changes in beneficial ownership14 Apr 2025
  • Form 4Statement of changes in beneficial ownership12 Mar 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025

INTRIERI VINCENT J(17)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership8 May 2019
  • Form 4Statement of changes in beneficial ownership17 Aug 2018

MERKSAMER SAMUEL J.(17)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017

Curado Frederico F.(16)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017

MCNAMARA MARTIN B(15)

  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016
  • Form 4Statement of changes in beneficial ownership12 May 2016
  • Form 4Statement of changes in beneficial ownership19 May 2015
  • Form 4Statement of changes in beneficial ownership19 May 2014
  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4Statement of changes in beneficial ownership8 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT9 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011

Tan Ek Kia(12)

  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 4Statement of changes in beneficial ownership13 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016
  • Form 4Statement of changes in beneficial ownership12 May 2016
  • Form 4Statement of changes in beneficial ownership19 May 2015
  • Form 4Statement of changes in beneficial ownership19 May 2014
  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012

Perestroika (Cyprus) Ltd(12)

  • Form 4Statement of changes in beneficial ownership25 Nov 2025
  • Form 4Statement of changes in beneficial ownership30 Sep 2025
  • Form 4Statement of changes in beneficial ownership13 Sep 2024
  • Form 4Statement of changes in beneficial ownership5 Aug 2024
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership29 Feb 2024
  • Form 4Statement of changes in beneficial ownership19 Sep 2023
  • Form 4Statement of changes in beneficial ownership25 Apr 2023
  • Form 4Statement of changes in beneficial ownership14 Dec 2022
  • Form 4Statement of changes in beneficial ownership18 Aug 2020

Ikaheimonen Esa(9)

  • Form 4Statement of changes in beneficial ownership18 Feb 2015
  • Form 4Statement of changes in beneficial ownership17 Nov 2014
  • Form 4Statement of changes in beneficial ownership4 Mar 2014
  • Form 4Statement of changes in beneficial ownership18 Feb 2014
  • Form 4/AStatement of changes in beneficial ownership (amendment)19 Nov 2013
  • Form 4Statement of changes in beneficial ownership18 Nov 2013
  • Form 4Statement of changes in beneficial ownership15 Feb 2013
  • Form 3PRIMARY DOCUMENT16 Nov 2012
  • Form 4PRIMARY DOCUMENT16 Nov 2012

Vayda Robert Thaddeus(9)

  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership1 Dec 2025
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 3Initial statement of beneficial ownership13 May 2024

CASON THOMAS W(8)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4Statement of changes in beneficial ownership11 Jan 2013
  • Form 4/AStatement of changes in beneficial ownership (amendment)1 Mar 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT3 Mar 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

STRACHAN IAN(8)

  • Form 4Statement of changes in beneficial ownership19 May 2014
  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4Statement of changes in beneficial ownership8 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT9 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

MILLER MERRILL A JR(8)

  • Form 4Statement of changes in beneficial ownership15 May 2019
  • Form 4Statement of changes in beneficial ownership22 May 2018
  • Form 4Statement of changes in beneficial ownership15 May 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)13 May 2016
  • Form 4Statement of changes in beneficial ownership12 May 2016
  • Form 4Statement of changes in beneficial ownership19 May 2015
  • Form 4Statement of changes in beneficial ownership17 Nov 2014
  • Form 3Initial statement of beneficial ownership2 Oct 2014

Briscoe John H(8)

  • Form 4PRIMARY DOCUMENT23 Feb 2011
  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 4PRIMARY DOCUMENT19 Nov 2010
  • Form 4PRIMARY DOCUMENT23 Jul 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT14 Aug 2009
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

ROSA RICARDO H.(7)

  • Form 4/APRIMARY DOCUMENT2 Dec 2011
  • Form 4PRIMARY DOCUMENT17 Nov 2011
  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 5PRIMARY DOCUMENT7 Jan 2011
  • Form 4PRIMARY DOCUMENT19 Nov 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 3PRIMARY DOCUMENT1 Sep 2009

Pack Jason(7)

  • Form 4Statement of changes in beneficial ownership3 Mar
  • Form 4Statement of changes in beneficial ownership9 Feb
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership4 Mar 2025
  • Form 4Statement of changes in beneficial ownership18 Feb 2025
  • Form 4Statement of changes in beneficial ownership10 Feb 2025
  • Form 3Initial statement of beneficial ownership12 Aug 2024

CAUTHEN GREGORY L(6)

  • Form 4PRIMARY DOCUMENT3 Jul 2012
  • Form 4PRIMARY DOCUMENT10 Jan 2012
  • Form 3PRIMARY DOCUMENT10 Jan 2012
  • Form 4PRIMARY DOCUMENT2 Sep 2009
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Deeming Nicholas(6)

  • Form 4PRIMARY DOCUMENT21 Feb 2012
  • Form 4PRIMARY DOCUMENT13 Feb 2012
  • Form 4PRIMARY DOCUMENT8 Feb 2012
  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 4PRIMARY DOCUMENT8 Feb 2011
  • Form 3PRIMARY DOCUMENT8 Feb 2011

Bonno Terry(6)

  • Form 4Statement of changes in beneficial ownership3 Mar 2017
  • Form 4Statement of changes in beneficial ownership13 Feb 2017
  • Form 4/AStatement of changes in beneficial ownership (amendment)2 Mar 2017
  • Form 4Statement of changes in beneficial ownership3 Mar 2016
  • Form 4Statement of changes in beneficial ownership16 Feb 2016
  • Form 3Initial statement of beneficial ownership26 Aug 2015

TALBERT J MICHAEL(5)

  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009
  • Form 4/APRIMARY DOCUMENT19 Mar 2009

BROWN ERIC B(5)

  • Form 4PRIMARY DOCUMENT23 Jul 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT16 Feb 2010
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Sprague Robert M(5)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

Sjobring Lars(5)

  • Form 4Statement of changes in beneficial ownership23 Sep 2015
  • Form 4Statement of changes in beneficial ownership4 Mar 2015
  • Form 4Statement of changes in beneficial ownership18 Feb 2015
  • Form 3Initial statement of beneficial ownership3 Mar 2014
  • Form 4Statement of changes in beneficial ownership3 Mar 2014

DELL'OSSO DOMENIC J JR(5)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 3Initial statement of beneficial ownership15 May 2023

Katz Allen M(5)

  • Form 4Statement of changes in beneficial ownership3 Jan 2014
  • Form 4Statement of changes in beneficial ownership19 Nov 2013
  • Form 4/APRIMARY DOCUMENT26 Nov 2012
  • Form 4PRIMARY DOCUMENT20 Nov 2012
  • Form 3PRIMARY DOCUMENT20 Nov 2012

Oevrum Margareth(5)

  • Form 4Statement of changes in beneficial ownership17 May 2024
  • Form 4Statement of changes in beneficial ownership15 May 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 3Initial statement of beneficial ownership2 Jun 2021

De Saint Victor Diane(5)

  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership23 Jun 2021
  • Form 4Statement of changes in beneficial ownership2 Jun 2021
  • Form 4Statement of changes in beneficial ownership12 May 2020
  • Form 3Initial statement of beneficial ownership12 May 2020

WHITMIRE JOHN L(4)

  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT3 Mar 2010
  • Form 4PRIMARY DOCUMENT19 May 2009
  • Form 4PRIMARY DOCUMENT20 Jan 2009

GRIJALVA VICTOR(4)

  • Form 4PRIMARY DOCUMENT15 Apr 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT28 Aug 2009
  • Form 4PRIMARY DOCUMENT19 May 2009

RICHARD C D(4)

  • Form 4PRIMARY DOCUMENT2 Jun 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT16 Feb 2010
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Bobillier Arnaud A Y(4)

  • Form 4PRIMARY DOCUMENT14 Feb 2011
  • Form 4PRIMARY DOCUMENT19 Nov 2010
  • Form 4PRIMARY DOCUMENT22 Feb 2010
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Saltiel Robert J.(4)

  • Form 4PRIMARY DOCUMENT16 Dec 2009
  • Form 4PRIMARY DOCUMENT14 Aug 2009
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

Bindra Jagjeet S.(4)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 3PRIMARY DOCUMENT13 May 2011

Burrard-Lucas Stephen Charles(4)

  • Form 4Statement of changes in beneficial ownership21 May 2013
  • Form 4PRIMARY DOCUMENT22 May 2012
  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 3PRIMARY DOCUMENT13 May 2011

LONG ROBERT L(3)

  • Form 4PRIMARY DOCUMENT3 Mar 2010
  • Form 4PRIMARY DOCUMENT23 Jul 2009
  • Form 4PRIMARY DOCUMENT17 Feb 2009

ANDERSON W RICHARD(3)

  • Form 4PRIMARY DOCUMENT17 May 2011
  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

Transocean Ltd.(3)

  • Form 4Statement of changes in beneficial ownership4 Dec 2025
  • Form 4Statement of changes in beneficial ownership31 Oct 2025
  • Form 3Initial statement of beneficial ownership23 Sep 2022

Munro Michael F(3)

  • Form 4PRIMARY DOCUMENT20 Nov 2012
  • Form 3/APRIMARY DOCUMENT13 Nov 2012
  • Form 3PRIMARY DOCUMENT6 Nov 2012

Lacey William F.(3)

  • Form 4Statement of changes in beneficial ownership27 May
  • Form 4Statement of changes in beneficial ownership2 Jun 2025
  • Form 3Initial statement of beneficial ownership2 Jun 2025

GEORGE RICHARD L(2)

  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

ROSE ROBERT E(2)

  • Form 4PRIMARY DOCUMENT18 May 2010
  • Form 4PRIMARY DOCUMENT19 May 2009

Shaw Robert S(2)

  • Form 3PRIMARY DOCUMENT2 Dec 2011
  • Form 4PRIMARY DOCUMENT2 Dec 2011

Schwab David M(1)

  • Form 3PRIMARY DOCUMENT6 Nov 2012

≥5% Ownership

ICAHN CARL C(14)

  • SC 13D/ATransocean Ltd.28 Sep 2016
  • SC 13D/ATransocean Ltd.12 Nov 2013
  • SC 13D/ATransocean Ltd.17 May 2013
  • SC 13D/ATransocean Ltd.13 May 2013
  • SC 13D/ATransocean Ltd.2 May 2013
  • SC 13D/ATransocean Ltd.30 Apr 2013
  • SC 13D/ATransocean Ltd.26 Apr 2013
  • SC 13D/ATransocean Ltd.19 Apr 2013
  • SC 13D/ATransocean Ltd.17 Apr 2013
  • SC 13D/ATransocean Ltd.4 Apr 2013

VANGUARD GROUP INC(13)

  • SC 13G/ATransocean Ltd.27 Mar
  • SC 13G/ATransocean Ltd.13 Feb 2024
  • SC 13G/ATransocean Ltd.9 Feb 2023
  • SC 13G/ATransocean Ltd.10 Feb 2022
  • SC 13G/ATransocean Ltd.10 Feb 2021
  • SC 13G/ATransocean Ltd.12 Feb 2020
  • SC 13G/ATransocean Ltd.12 Feb 2019
  • SC 13G/ATransocean Ltd.8 Feb 2018
  • SC 13G/ATransocean Ltd.10 Feb 2017
  • SC 13G/ATransocean Ltd.10 Feb 2016

BlackRock Inc.(13)

  • SC 13G/ATransocean Ltd.12 Jul 2021
  • SC 13G/ATransocean Ltd.1 Feb 2021
  • SC 13G/ATransocean Ltd.10 Jul 2020
  • SC 13G/ATransocean Ltd.10 Feb 2020
  • SC 13G/ATransocean Ltd.11 Jan 2019
  • SC 13G/ATransocean Ltd.10 Jan 2019
  • SC 13G/ATransocean Ltd.30 Jan 2018
  • SC 13GTransocean Ltd.30 Jan 2017
  • SC 13G/ATransocean Ltd.8 Apr 2016
  • SC 13G/ATransocean Ltd.27 Jan 2016

PRIMECAP MANAGEMENT CO/CA/(11)

  • SC 13G/ATransocean Ltd.14 Aug 2025
  • SC 13G/ATransocean Ltd.12 Feb 2024
  • SC 13G/ATransocean Ltd.9 Feb 2023
  • SC 13G/ATransocean Ltd.10 Feb 2022
  • SC 13G/ATransocean Ltd.12 Feb 2021
  • SC 13G/ATransocean Ltd.12 Feb 2020
  • SC 13G/ATransocean Ltd.8 Feb 2019
  • SC 13GTransocean Ltd.7 Aug 2018
  • SC 13G/ATransocean Ltd.7 Dec 2015
  • SC 13G/ATransocean Ltd.13 Feb 2015

Perestroika(8)

  • SC 13D/ATransocean Ltd.19 Dec 2022
  • SC 13D/ATransocean Ltd.17 May 2022
  • SC 13D/ATransocean Ltd.24 Jun 2021
  • SC 13D/ATransocean Ltd.18 Aug 2020
  • SC 13D/ATransocean Ltd.4 Sep 2018
  • SC 13D/ATransocean Ltd.3 Jul 2018
  • SC 13D/ATransocean Ltd.18 Jun 2018
  • SC 13DTransocean Ltd.5 Feb 2018

Transocean Ltd.(4)

  • SC 13DValaris Ltd13 Feb
  • SC 13D/ANauticus Robotics, Inc.4 Dec 2025
  • SC 13GTransocean Partners LLC3 Feb 2016
  • SC 13GTransocean Partners LLC6 Feb 2015

FMR LLC(3)

  • SC 13G/ATransocean Ltd.12 Dec 2011
  • SC 13G/ATransocean Ltd.8 Apr 2011
  • SC 13GTransocean Ltd.14 Feb 2011

MARSICO CAPITAL MANAGEMENT LLC(3)

  • SC 13G/ATransocean Ltd.11 Feb 2011
  • SC 13G/ATransocean Ltd.12 Feb 2010
  • SC 13G/ATransocean Ltd.13 Feb 2009

BlackRock, Inc.(3)

  • SC 13G/ATransocean Ltd.23 Apr 2025
  • SC 13GTransocean Ltd.8 Nov 2024
  • SC 13GTransocean Ltd.22 Oct 2024

STATE STREET CORP(2)

  • SC 13G/ATransocean Ltd.13 Feb 2018
  • SC 13GTransocean Ltd.10 Feb 2017

D. E. SHAW & CO, L.P.(2)

  • SC 13G/ATransocean Ltd.14 Feb 2023
  • SC 13GTransocean Ltd.25 Nov 2022

Capital World Investors(2)

  • SC 13G/ATransocean Ltd.13 Feb 2025
  • SC 13GTransocean Ltd.13 Nov 2024

Hayfin Special Opportunities Fund II LP(2)

  • SC 13G/ATransocean Ltd.15 Oct 2024
  • SC 13GTransocean Ltd.9 Jul 2024

Asia Research & Capital Management Ltd(2)

  • SC 13GTransocean Ltd.12 Dec 2018
  • SC 13GTransocean Ltd.8 Feb 2018

Mohn Frederik Wilhelm(2)

  • SC 13D/ATransocean Ltd.11 Feb
  • SC 13D/ATransocean Ltd.30 Sep 2025

CANYON CAPITAL ADVISORS LLC(1)

  • SC 13G/ATransocean Ltd.14 Feb 2019