Ameren Corporation
    SEC Filings

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    All SEC filings by Ameren Corporation (AEE) — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.

    Financials

    10-QQuarterly reportView DiffAug 3, 2026
    10-QQuarterly reportView DiffMay 7, 2026
    ARSAnnual report to shareholdersMar 31, 2026
    10-KAnnual reportView DiffFeb 18, 2026
    10-QQuarterly reportView DiffNov 6, 2025
    10-QQuarterly reportView DiffAug 4, 2025
    10-QQuarterly reportView DiffMay 5, 2025
    ARSAnnual report to shareholdersMar 25, 2025
    10-KAnnual reportView DiffFeb 18, 2025
    10-QQuarterly reportView DiffNov 7, 2024

    Events

    8-KCurrent reportAug 24, 2026
    8-KCurrent reportAug 4, 2026
    8-KAmeren Announces Second Quarter 2026 ResultsJul 30, 2026
    8-KCurrent reportJun 29, 2026
    8-KCurrent reportJun 26, 2026
    8-KSubmission of Matters to a Vote of Security HoldersMay 18, 2026
    8-KAmeren Announces First Quarter 2026 ResultsMay 5, 2026
    8-KOther EventsMar 4, 2026
    8-KOther EventsFeb 27, 2026
    8-KAmeren Announces 2025 Results, Affirms Guidance for 2026 EarningsFeb 11, 2026

    Registrations and Prospectuses

    424B3Prospectus supplement6h ago
    424B5Prospectus supplement for primary offeringAug 4, 2026
    S-3ASRAutomatic shelf registrationAug 4, 2026
    S-3ASRAutomatic shelf registrationMay 15, 2026
    424B2Prospectus for primary offeringFeb 27, 2026
    FWPFree writing prospectusFeb 26, 2026
    FWPFree writing prospectusFeb 26, 2026
    424B3Prospectus supplementFeb 26, 2026
    424B5Prospectus supplement for primary offeringAug 7, 2025
    424B2Prospectus for primary offeringMay 13, 2025

    Proxies

    DEFA14AAdditional proxy soliciting materialsMar 31, 2026
    DEF 14ADefinitive proxyView DiffMar 31, 2026
    PX14A6GLetter to shareholdersApr 30, 2025
    DEFA14AAdditional proxy soliciting materialsApr 28, 2025
    DEFA14AAdditional proxy soliciting materialsMar 27, 2025
    DEFA14AAdditional proxy soliciting materialsMar 25, 2025
    DEF 14ADefinitive proxyView DiffMar 25, 2025
    DEFA14AAdditional proxy soliciting materialsApr 5, 2024
    DEFA14AAdditional proxy soliciting materialsMar 26, 2024
    DEF 14ADefinitive proxyView DiffMar 26, 2024

    Other

    UPLOADLetter from SECApr 18, 2024
    CORRESPCorrespondence with SECApr 10, 2024
    UPLOADLetter from SECMar 27, 2024
    NO ACTNo action letterJan 12, 2017
    UPLOADLetter from SECJun 20, 2016
    CORRESPCorrespondence with SECJun 16, 2016
    UPLOADLetter from SECJun 8, 2016
    NO ACTNo action letterFeb 26, 2015
    NO ACTNo action letterJan 9, 2013
    UPLOADLetter from SECJun 15, 2012

    Ownership

    4Martin Ryan JAug 20, 2026
    4Shaw Theresa AAug 17, 2026
    4Moehn Michael LAug 5, 2026
    144Notice of proposed sale of securitiesAug 3, 2026
    4Smith Patrick EJul 6, 2026
    4Melda Aaron PJul 6, 2026
    4Arora Ajay KJul 6, 2026
    11-KAnnual report of employee stock purchasesJun 26, 2026
    4Arora Ajay KJun 3, 2026
    4Melda Aaron PJun 3, 2026