Arthur J. Gallagher & Co.
    SEC Filings

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    All SEC filings by Arthur J. Gallagher & Co. (AJG) — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.

    Financials

    10-QQuarterly reportView DiffAug 5, 2026
    10-QQuarterly reportView DiffMay 6, 2026
    ARSAnnual report to shareholdersMar 23, 2026
    10-KAnnual reportView DiffFeb 17, 2026
    10-QQuarterly reportView DiffNov 7, 2025
    10-QQuarterly reportView DiffAug 1, 2025
    10-QQuarterly reportView DiffMay 2, 2025
    ARSAnnual report to shareholdersMar 24, 2025
    10-KAnnual reportView DiffFeb 18, 2025
    10-QQuarterly reportView DiffOct 29, 2024

    Events

    8-KCurrent reportAug 26, 2026
    8-KArthur J. Gallagher Co. Announces Second Quarter 2026 Financial ResultsJul 30, 2026
    8-KArthur J. Gallagher Co. Announces Passing of Director David JohnsonJul 29, 2026
    8-KCurrent reportJun 17, 2026
    8-KSubmission of Matters to a Vote of Security HoldersMay 13, 2026
    8-KArthur J. Gallagher & Co. Announces First Quarter 2026 Financial ResultsApr 30, 2026
    8-KRegulation Fd DisclosureMar 17, 2026
    8-KDeparture of Directors or Certain OfficersMar 12, 2026
    8-KArthur J. Gallagher & Co. Announces Fourth Quarter and Full Year 2025 Financial ResultsJan 29, 2026
    8-KRegulation Fd DisclosureDec 16, 2025

    Registrations and Prospectuses

    S-8Registration of securities for employeesFeb 18, 2025
    424B2Prospectus for primary offeringDec 11, 2024
    FWPFree writing prospectusDec 10, 2024
    424B2Prospectus for primary offeringDec 10, 2024
    424B5Prospectus supplement for primary offeringDec 9, 2024
    424B2Prospectus for primary offeringDec 9, 2024
    S-3ASRAutomatic shelf registrationDec 9, 2024
    424B2Prospectus for primary offeringMar 14, 2024
    424B2Prospectus for primary offeringFeb 14, 2024
    FWPFree writing prospectusFeb 12, 2024

    Proxies

    N-PXAnnual report of proxy voting recordAug 12, 2026
    DEFA14AAdditional proxy soliciting materialsApr 3, 2026
    DEFA14AAdditional proxy soliciting materialsMar 23, 2026
    DEF 14ADefinitive proxyView DiffMar 23, 2026
    DEFA14AAdditional proxy soliciting materialsMar 24, 2025
    DEF 14ADefinitive proxyView DiffMar 24, 2025
    N-PXAnnual report of proxy voting recordAug 28, 2024
    DEFA14AAdditional proxy soliciting materialsMar 22, 2024
    DEF 14ADefinitive proxyView DiffMar 22, 2024
    DEFA14AAdditional proxy soliciting materialsApr 28, 2023

    Other

    UPLOADLetter from SECSep 16, 2024
    EFFECTNotice of effectivenessNov 29, 2022
    UPLOADLetter from SECNov 22, 2022
    CORRESPCorrespondence with SECNov 22, 2022
    IRANNOTICEDisclosure regarding Iran Threat Reduction and Syria Human Rights ActOct 26, 2018
    IRANNOTICEDisclosure regarding Iran Threat Reduction and Syria Human Rights ActJul 27, 2018
    IRANNOTICEDisclosure regarding Iran Threat Reduction and Syria Human Rights ActMay 7, 2018
    IRANNOTICEDisclosure regarding Iran Threat Reduction and Syria Human Rights ActFeb 12, 2018
    IRANNOTICEDisclosure regarding Iran Threat Reduction and Syria Human Rights ActOct 30, 2017
    IRANNOTICEDisclosure regarding Iran Threat Reduction and Syria Human Rights ActJul 28, 2017

    Ownership

    4Hudson Scott RSep 4, 2026
    4Miskel Christopher C.Sep 2, 2026
    144Notice of proposed sale of securitiesSep 2, 2026
    4Bay Walter D.Aug 26, 2026
    144Notice of proposed sale of securitiesAug 24, 2026
    4Mead Christopher EAug 20, 2026
    144Notice of proposed sale of securitiesAug 19, 2026
    4Bloom Mark H.Aug 18, 2026
    13F-NTNotice of holdings reported by another managerAug 14, 2026
    SC 13G/ABeneficial ownership reportAug 12, 2026