Transocean Ltd.
    SEC Filings

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    All SEC filings by Transocean Ltd. — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.

    Financials

    10-KAnnual reportView DiffFeb 26, 2009
    10-QQuarterly reportView DiffNov 6, 2008
    10-QQuarterly reportView DiffAug 6, 2008
    10-QQuarterly reportView DiffMay 7, 2008
    ARSAnnual report to shareholdersApr 1, 2008
    10-KAnnual reportView DiffFeb 28, 2008
    10-QQuarterly reportView DiffOct 31, 2007
    10-QQuarterly reportView DiffAug 1, 2007
    10-QQuarterly reportView DiffMay 2, 2007
    ARSAnnual report to shareholdersMar 27, 2007

    Events

    8-KEntry Into a Material Definitive AgreementDec 19, 2008
    8-KDeparture of Directors or Principal OfficersDec 12, 2008
    8-KTransocean Inc. Shareholders Approve Proposal ToDec 9, 2008
    8-KRegulation Fd DisclosureDec 5, 2008
    8-KEntry Into a Material Definitive AgreementNov 26, 2008
    8-KDeparture of Directors or Principal OfficersNov 24, 2008
    8-KTransocean Inc. Proposal to Move Its Place of IncorporationNov 17, 2008
    8-K/ARegulation Fd DisclosureNov 7, 2008
    8-KThird Quarter 2008 Financial ResultsNov 5, 2008
    8-K/ARegulation Fd DisclosureNov 4, 2008

    Registrations and Prospectuses

    25-NSEExchange delistingJan 30, 2023
    S-3ASRAutomatic shelf registrationJun 14, 2021
    424B7Prospectus with selling stockholder infoJul 11, 2018
    424B3Prospectus supplementMar 8, 2018
    425Business combination disclosureMar 8, 2018
    424B3Prospectus supplementFeb 21, 2018
    425Business combination disclosureFeb 20, 2018
    425Business combination disclosureFeb 20, 2018
    S-4/ARegistration of securities issued in business combination transactionsView DiffFeb 16, 2018
    425Business combination disclosureFeb 7, 2018

    Proxies

    DEFA14AAdditional proxy soliciting materialsNov 26, 2008
    DEFA14AAdditional proxy soliciting materialsNov 24, 2008
    DEFA14AAdditional proxy soliciting materialsNov 20, 2008
    DEFA14AAdditional proxy soliciting materialsNov 6, 2008
    DEFA14AAdditional proxy soliciting materialsNov 3, 2008
    DEF 14ADefinitive proxyView DiffNov 3, 2008
    DEFA14AAdditional proxy soliciting materialsOct 10, 2008
    PRE 14APreliminary proxyOct 10, 2008
    DEF 14ADefinitive proxyView DiffApr 2, 2008
    DEFA14AAdditional proxy soliciting materialsOct 23, 2007

    Other

    EFFECTNotice of effectivenessFeb 20, 2018
    CERTCertification of approval for exchange listingJan 30, 2018
    EFFECTNotice of effectivenessDec 22, 2017
    UPLOADLetter from SECDec 5, 2017
    UPLOADLetter from SECNov 21, 2017
    UPLOADLetter from SECNov 15, 2017
    UPLOADLetter from SECOct 30, 2017
    EFFECTNotice of effectivenessFeb 2, 2009
    EFFECTNotice of effectivenessFeb 2, 2009
    EFFECTNotice of effectivenessFeb 2, 2009

    Ownership

    4Transocean International LtdDec 4, 2025
    4Transocean International LtdOct 31, 2025
    SC 13D/ABeneficial ownership reportOct 31, 2025
    3Initial statement of insider ownershipSep 23, 2022
    SC 13D/ANauticus Robotics, Inc.Sep 23, 2022
    SC 13G/ABeneficial ownership reportFeb 17, 2009
    4Change in insider ownershipDec 15, 2008
    4Change in insider ownershipNov 26, 2008
    4Change in insider ownershipOct 2, 2008
    4Change in insider ownershipSep 5, 2008