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Company research

WISCONSIN POWER & LIGHT CO

CIK 107832Updated Sep 27, 2026

No exchange listing on record for this SEC filer. Coverage is drawn from its filings.

Filing activity

SEC EDGAR
Latest filing

8-K · Dec 5, 2025

50 filings on record · 8-K, 424B5, FWP, 305B2, 25-NSE, SC 13G/A.

Recent filings

  1. 8-K filing

    8-K · 2025-12-05 · 0000352541-25-000085

  2. 424B5 filing

    424B5 · 2025-12-03 · 0001193125-25-306979

  3. FWP filing

    FWP · 2025-12-02 · 0001193125-25-305184

  4. 424B5 filing

    424B5 · 2025-12-02 · 0001193125-25-304610

  5. 8-K filing

    8-K · 2024-03-07 · 0000352541-24-000029

Show 5 more recent filings

  1. 424B5 filing

    424B5 · 2024-03-05 · 0001193125-24-059235

  2. FWP filing

    FWP · 2024-03-04 · 0001193125-24-057925

  3. 424B5 filing

    424B5 · 2024-03-04 · 0001193125-24-056989

  4. 8-K filing

    8-K · 2023-03-30 · 0000352541-23-000035

  5. 424B5 filing

    424B5 · 2023-03-29 · 0001193125-23-083392