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Transocean Ltd. (RIG) Subsidiaries

Transocean Ltd. Subsidiaries

Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (18 lists). Names and jurisdictions are as filed.

  • 2026-02-23: Subsidiary 15375 Memorial Corporation; Jurisdiction Delaware.
  • 2026-02-23: Subsidiary Aguas Profundas, Limitada; Jurisdiction Angola.
  • 2026-02-23: Subsidiary Angola Deepwater Drilling Company (Offshore Services) Ltd; Jurisdiction Bermuda.
  • 2026-02-23: Subsidiary AngoSantaFe - Prestacao de Servicos Petroliferos, Limitada; Jurisdiction Angola.
Annual report filedSubsidiaryJurisdiction
2026-02-2315375 Memorial CorporationDelaware
2026-02-23Aguas Profundas, LimitadaAngola
2026-02-23Angola Deepwater Drilling Company (Offshore Services) LtdBermuda
2026-02-23AngoSantaFe - Prestacao de Servicos Petroliferos, LimitadaAngola
2026-02-23Arcade Drilling ASNorway
2026-02-23Asie Sonat Offshore Sdn. Bhd.Malaysia
2026-02-23Challenger Minerals Inc.California
2026-02-23Deepwater Drilling (Transocean Ghana) LTDGhana
2026-02-23Deepwater Drilling North Africa LLC - Free ZoneEgypt
2026-02-23Deepwater Pacific 1 LimitedBermuda
2026-02-23Deepwater Supply Inc.Delaware
2026-02-23Drillship Alonissos Owners LimitedBermuda
2026-02-23Drillship Paros Owners LimitedBermuda
2026-02-23Drillship Skyros Owners LimitedBermuda
2026-02-23Entities Holdings, Inc.Delaware
2026-02-23Global Marine Inc.Delaware
2026-02-23Global Offshore Drilling LimitedNigeria
2026-02-23GlobalSantaFe B.V.Netherlands
2026-02-23GlobalSantaFe Denmark Holdings ApSDenmark
2026-02-23GlobalSantaFe Drilling (N.A.) N.V.Netherlands Antilles
2026-02-23GlobalSantaFe Drilling CompanyDelaware
2026-02-23GlobalSantaFe Drilling Mexico, S. de R.L. de C.V.Mexico
2026-02-23GlobalSantaFe Drilling Trinidad LLCDelaware
2026-02-23GlobalSantaFe Drilling Venezuela, C.A.Venezuela
2026-02-23GlobalSantaFe Financial Services (Luxembourg) S.a.r.l.Luxembourg
2026-02-23GlobalSantaFe Group Financing Limited Liability CompanyHungary
2026-02-23GlobalSantaFe Hungary Services Limited Liability CompanyHungary
2026-02-23GlobalSantaFe International Drilling Corporation LimitedBermuda
2026-02-23GlobalSantaFe International Drilling LimitedBermuda
2026-02-23GlobalSantaFe International Services LimitedBermuda
2026-02-23GlobalSantaFe Nederland B.V.Netherlands
2026-02-23GlobalSantaFe Offshore Services LimitedBermuda
2026-02-23GlobalSantaFe Operations (Mexico) LLCDelaware
2026-02-23GlobalSantaFe Saudi Arabia Ltd.Bermuda
2026-02-23GlobalSantaFe Services (BVI) LimitedBermuda
2026-02-23GlobalSantaFe Services Netherlands B.V.Netherlands
2026-02-23GlobalSantaFe Servicios de Venezuela, C.A.Venezuela
2026-02-23GlobalSantaFe South America LLCDelaware
2026-02-23GlobalSantaFe U.S. Holdings Inc.Delaware
2026-02-23GSF Leasing Services GmbHSwitzerland
2026-02-23Indigo Drilling LimitedNigeria
2026-02-23Inteliwell LimitedEngland & Wales
2026-02-23Liquila DWA LLCHungary
2026-02-23Ocean Rig Management LimitedBermuda
2026-02-23Ocean Rig Operations LimitedBermuda
2026-02-23Ocean Rig UDW LimitedBermuda
2026-02-23Offshore Ghana Transocean LTDGhana
2026-02-23Olympia Rig Angola Holding, S.A.Angola
2026-02-23Olympia Rig Angola, LimitadaAngola
2026-02-23OR Norge Operations Inc.Marshall Islands
2026-02-23Platform Capital N.V.Netherlands Antilles
2026-02-23Platform Financial N.V.Netherlands Antilles
2026-02-23Primelead LimitedCyprus
2026-02-23PT SantaFe Subsea IndonesiaIndonesia
2026-02-23PT. Transocean IndonesiaIndonesia
2026-02-23R&B Falcon (A) Pty LtdWestern Australia
2026-02-23R&B Falcon (Caledonia) LimitedEngland & Wales
2026-02-23R&B Falcon (U.K.) LimitedEngland & Wales
2026-02-23R&B Falcon Exploration Co., LLCOklahoma
2026-02-23Ranger Insurance LimitedBermuda
2026-02-23RBF Rig Corporation, LLCDelaware
2026-02-23Reading & Bates Coal Co., LLCNevada
2026-02-23Santa Fe Braun Inc.Delaware
2026-02-23Santa Fe Construction CompanyDelaware
2026-02-23Santa Fe Drilling Company of Venezuela, C.A.California
2026-02-23Saudi Drilling Company LimitedSaudi Arabia
2026-02-23Sedco Forex International LimitedBermuda
2026-02-23Servicios Petroleros Santa Fe, S.A.Venezuela
2026-02-23Songa Offshore Delta LimitedCyprus
2026-02-23Songa Offshore Drilling LimitedCyprus
2026-02-23Songa Offshore Enabler LimitedCyprus
2026-02-23Songa Offshore Encourage LimitedCyprus
2026-02-23Songa Offshore Endurance LimitedCyprus
2026-02-23Songa Offshore Equinox LimitedCyprus
2026-02-23Songa Offshore Management LimitedCyprus
2026-02-23Songa Offshore Pte. Ltd.Singapore
2026-02-23Songa Offshore Rig 2 ASNorway
2026-02-23Songa Offshore Rig 3 ASNorway
2026-02-23Songa Offshore Saturn LimitedCyprus
2026-02-23Songa Offshore SECyprus
2026-02-23T. I. International Mexico, S. de R.L. de C.V.Mexico
2026-02-23TILAM Holdings LimitedBermuda
2026-02-23Transocean Africa Drilling LimitedBermuda
2026-02-23Transocean Aquila LimitedBermuda
2026-02-23Transocean Asia Services Sdn. Bhd.Malaysia
2026-02-23Transocean Asset Holdings 1 LimitedBermuda
2026-02-23Transocean Asset Holdings 2 LimitedBermuda
2026-02-23Transocean Asset Holdings 3 LimitedBermuda
2026-02-23Transocean Atlas LimitedBermuda
2026-02-23Transocean Barents ASANorway
2026-02-23Transocean Brasil Ltda.Brazil
2026-02-23Transocean Britannia LimitedBermuda
2026-02-23Transocean Canada Drilling Services Ltd.Nova Scotia
2026-02-23Transocean Cayman Management Services LimitedCayman Islands
2026-02-23Transocean Conqueror LimitedBermuda
2026-02-23Transocean Conqueror Opco LLCDelaware
2026-02-23Transocean Corporate Services LimitedCayman Islands
2026-02-23Transocean Cyprus Capital Management Public LimitedCyprus
2026-02-23Transocean Deepwater Drilling Services LimitedBermuda
2026-02-23Transocean Deepwater Holdings LimitedBermuda

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