Union Electric Company
    SEC Filings

    |
    |

    All SEC filings by Union Electric Company (UEPEO) — 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
    10-KAnnual reportView DiffFeb 18, 2026
    10-QQuarterly reportView DiffNov 6, 2025
    10-QQuarterly reportView DiffAug 4, 2025
    10-QQuarterly reportView DiffMay 5, 2025
    10-KAnnual reportView DiffFeb 18, 2025
    10-QQuarterly reportView DiffNov 7, 2024
    10-QQuarterly reportView DiffAug 5, 2024
    10-QQuarterly reportView DiffMay 6, 2024

    Events

    8-KCurrent reportJun 29, 2026
    8-KCurrent reportJun 26, 2026
    8-KSubmission of Matters to a Vote of Security HoldersMay 18, 2026
    8-KOther EventsFeb 27, 2026
    8-KEntry Into a Material Definitive AgreementDec 10, 2025
    8-KOther EventsNov 24, 2025
    8-KSubmission of Matters to a Vote of Security HoldersMay 12, 2025
    8-KOther EventsApr 4, 2025
    8-KOther EventsMar 3, 2025
    8-KTo the Persons Listed on the Attached Schedule IDec 20, 2024

    Registrations and Prospectuses

    S-3ASRAutomatic shelf registrationAug 4, 2026
    424B2Prospectus for primary offeringJun 16, 2026
    FWPFree writing prospectusJun 15, 2026
    FWPFree writing prospectusJun 15, 2026
    424B3Prospectus supplementJun 15, 2026
    424B2Prospectus for primary offeringFeb 24, 2026
    FWPFree writing prospectusFeb 23, 2026
    FWPFree writing prospectusFeb 23, 2026
    424B3Prospectus supplementFeb 23, 2026
    424B2Prospectus for primary offeringMar 27, 2025

    Proxies

    DEFA14CAdditional informationMar 31, 2026
    DEF 14CInformation statementMar 31, 2026
    DEFA14CAdditional informationMar 25, 2025
    DEF 14CInformation statementMar 25, 2025
    DEFA14CAdditional informationApr 5, 2024
    DEF 14CInformation statementApr 5, 2024
    DEFA14CAdditional informationMar 28, 2023
    DEF 14CInformation statementMar 28, 2023
    DEFA14CAdditional informationMar 29, 2022
    DEF 14CInformation statementMar 29, 2022

    Other

    EFFECTNotice of effectivenessDec 9, 2024
    CORRESPCorrespondence with SECDec 4, 2024
    CORRESPCorrespondence with SECDec 4, 2024
    CORRESPCorrespondence with SECNov 15, 2024
    UPLOADLetter from SECNov 7, 2024
    UPLOADLetter from SECApr 18, 2024
    UPLOADLetter from SECMar 27, 2024
    UPLOADLetter from SECJun 20, 2016
    UPLOADLetter from SECJun 8, 2016
    UPLOADLetter from SECJun 15, 2012

    Ownership

    SC 13G/AUnion Electric CoFeb 14, 2022
    SC 13G/AUnion Electric CoFeb 18, 2021
    SC 13G/AUnion Electric CoFeb 18, 2021
    SC 13G/AUnion Electric CoFeb 12, 2021
    SC 13G/AUnion Electric CoFeb 12, 2021
    SC 13G/ABeneficial ownership reportFeb 12, 2020
    SC 13G/AUnion Electric CoFeb 12, 2020
    3Chonda J NwamuJan 24, 2019
    3Initial statement of insider ownershipJan 27, 2014
    3Initial statement of insider ownershipJan 8, 2013