Quest Diagnostics Incorporated
    SEC Filings

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    All SEC filings by Quest Diagnostics Incorporated (DGX) — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.

    Financials

    10-QQuarterly reportView DiffJul 23, 2026
    10-QQuarterly reportView DiffApr 22, 2026
    10-KAnnual reportView DiffFeb 26, 2026
    10-QQuarterly reportView DiffOct 21, 2025
    10-QQuarterly reportView DiffJul 23, 2025
    10-QQuarterly reportView DiffApr 23, 2025
    10-KAnnual reportView DiffFeb 20, 2025
    10-QQuarterly reportView DiffOct 23, 2024
    10-QQuarterly reportView DiffJul 24, 2024
    10-QQuarterly reportView DiffApr 24, 2024

    Events

    8-KQuest Diagnostics Reports Second Quarter 2026 Financial ResultsJul 23, 2026
    8-KSubmission of Matters to a Vote of Security HoldersMay 21, 2026
    8-KEntry Into a Material Definitive AgreementMay 8, 2026
    8-KQuest Diagnostics Prices $500 Million of Senior NotesMay 1, 2026
    8-KResults of Operations and Financial ConditionApr 21, 2026
    8-KDeparture of Directors or Certain OfficersMar 12, 2026
    8-KProvides Guidance for Full Year 2026; Increases Quarterly Dividend 7.5% to $0.86 Per ShareFeb 10, 2026
    8-KResults of Operations and Financial ConditionJan 12, 2026
    8-KResults of Operations and Financial ConditionOct 21, 2025
    8-KResults of Operations and Financial ConditionJul 22, 2025

    Registrations and Prospectuses

    424B2Prospectus for primary offeringApr 28, 2026
    FWPFree writing prospectusApr 27, 2026
    FWPFree writing prospectusApr 27, 2026
    424B2Prospectus for primary offeringApr 27, 2026
    S-3ASRAutomatic shelf registrationJun 20, 2025
    424B2Prospectus for primary offeringAug 16, 2024
    FWPFree writing prospectusAug 15, 2024
    424B2Prospectus for primary offeringAug 15, 2024
    424B2Prospectus for primary offeringOct 31, 2023
    FWPFree writing prospectusOct 30, 2023

    Proxies

    DEFA14AAdditional proxy soliciting materialsApr 6, 2026
    DEF 14ADefinitive proxyView DiffApr 6, 2026
    DEFA14AAdditional proxy soliciting materialsApr 11, 2025
    DEFA14AAdditional proxy soliciting materialsApr 4, 2025
    DEF 14ADefinitive proxyView DiffApr 4, 2025
    PX14A6GLetter to shareholdersApr 11, 2024
    DEFA14AAdditional proxy soliciting materialsApr 5, 2024
    DEF 14ADefinitive proxyView DiffApr 5, 2024
    PRE 14APreliminary proxyView DiffMar 25, 2024
    PX14A6GLetter to shareholdersApr 10, 2023

    Other

    CT ORDERConfidential treatment orderMar 27, 2017
    NO ACTNo action letterMar 23, 2017
    UPLOADLetter from SECApr 29, 2016
    CORRESPCorrespondence with SECApr 20, 2016
    UPLOADLetter from SECApr 7, 2016
    NO ACTNo action letterMar 17, 2016
    CT ORDERConfidential treatment orderDec 7, 2015
    SDConflict minerals disclosureMay 29, 2014
    NO ACTNo action letterFeb 19, 2014
    UPLOADLetter from SECMay 7, 2013

    Ownership

    4Davis J. E.Sep 3, 2026
    144Notice of proposed sale of securitiesSep 1, 2026
    4Prevoznik Michael EAug 31, 2026
    144Notice of proposed sale of securitiesAug 28, 2026
    SC 13G/ABeneficial ownership reportAug 14, 2026
    4Delaney Mark EJul 29, 2026
    144Notice of proposed sale of securitiesJul 28, 2026
    4Kuppusamy KarthikJul 27, 2026
    4Carter Robert BJul 27, 2026
    4Gregg Vicky BJul 27, 2026