A business in context

LNT research notebook

Read the disclosures. Follow the relationships. Keep the dates in view.

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-09-07 · 8010 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 8-K · Current report

    Report date 2026-08-21 · 0001193125-26-360020 · Items 8.01,9.01

  2. 4 · Ownership change

    Report date 2026-08-10 · 0001512789-26-000003

  3. 10-Q · Quarterly report

    Report date 2026-06-30 · 0000352541-26-000043

  4. 8-K · Current report

    Report date 2026-07-30 · 0000352541-26-000042 · Items 2.02,9.01

  5. 4 · Ownership change

    Report date 2026-07-10 · 0002115951-26-000004

  6. 4 · Ownership change

    Report date 2026-07-10 · 0001942745-26-000004

  7. 4 · Ownership change

    Report date 2026-07-10 · 0001684665-26-000006

  8. 4 · Ownership change

    Report date 2026-07-10 · 0001654634-26-000003

  9. 4 · Ownership change

    Report date 2026-07-10 · 0001607542-26-000003

  10. 4 · Ownership change

    Report date 2026-07-10 · 0001463371-26-000003

  11. 4 · Ownership change

    Report date 2026-07-10 · 0001298509-26-000005

  12. 8-K · Current report

    Report date 2026-05-20 · 0000352541-26-000036 · Items 5.07

  13. 10-Q · Quarterly report

    Report date 2026-03-31 · 0000352541-26-000033

  14. 8-K · Current report

    Report date 2026-04-30 · 0000352541-26-000030 · Items 2.02,9.01

  15. DEF 14A · Proxy statement

    Report date 2026-05-20 · 0000352541-26-000025

  16. 8-K · Current report

    Report date 2026-03-19 · 0001193125-26-116244 · Items 1.01,9.01

  17. 8-K · Current report

    Report date 2026-03-02 · 0000352541-26-000009 · Items 1.01,2.03,9.01

  18. 10-K · Annual report

    Report date 2025-12-31 · 0000352541-26-000007

  19. 8-K · Current report

    Report date 2026-02-19 · 0000352541-26-000005 · Items 2.02,9.01

  20. 8-K · Current report

    Report date 2026-01-05 · 0000352541-26-000003 · Items 5.02

  21. 8-K · Current report

    Report date 2025-12-10 · 0000352541-25-000089 · Items 5.02

  22. 8-K · Current report

    Report date 2025-12-02 · 0000352541-25-000085 · Items 8.01,9.01

  23. 10-Q · Quarterly report

    Report date 2025-09-30 · 0000352541-25-000081

  24. 8-K · Current report

    Report date 2025-11-06 · 0000352541-25-000079 · Items 2.02,9.01

  25. 8-K · Current report

    Report date 2025-09-23 · 0000352541-25-000076 · Items 8.01,9.01

  26. 8-K · Current report

    Report date 2025-09-08 · 0000352541-25-000074 · Items 8.01,9.01

  27. 10-Q · Quarterly report

    Report date 2025-06-30 · 0000352541-25-000072

  28. 8-K · Current report

    Report date 2025-08-07 · 0000352541-25-000070 · Items 2.02,9.01

  29. 8-K · Current report

    Report date 2025-05-16 · 0000352541-25-000055 · Items 5.07

  30. 8-K · Current report

    Report date 2025-05-13 · 0001628280-25-026398 · Items 8.01,9.01

  31. 8-K · Current report

    Report date 2025-05-12 · 0001193125-25-120808 · Items 1.01,2.03,3.02,8.01,9.01

  32. 8-K · Current report

    Report date 2025-05-09 · 0001193125-25-116990 · Items 1.01,9.01

  33. 10-Q · Quarterly report

    Report date 2025-03-31 · 0000352541-25-000053

  34. 8-K · Current report

    Report date 2025-05-08 · 0000352541-25-000050 · Items 2.02,9.01

  35. DEF 14A · Proxy statement

    Report date 2025-05-16 · 0000352541-25-000036

  36. 8-K · Current report

    Report date 2025-03-07 · 0000352541-25-000029 · Items 5.02

  37. 8-K · Current report

    Report date 2025-03-03 · 0000352541-25-000025 · Items 1.01,2.03,9.01

  38. 10-K · Annual report

    Report date 2024-12-31 · 0000352541-25-000014

  39. 8-K · Current report

    Report date 2025-02-20 · 0000352541-25-000012 · Items 2.02,9.01

  40. 8-K · Current report

    Report date 2025-02-07 · 0000352541-25-000009 · Items 5.02

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-09-07 · 2026 Q2: filings in this completed quarter; not a live transaction feed

Purchases and sales include open-market or private transactions. Grants, exercises and tax withholding are shown separately. Amendments and joint reports can overlap; rows are not a net-buying score. Prices retain the filing's units; consult its footnotes.

Transaction rows by code · counts, not monetary totals
Purchase: 0 transaction rows0PSale: 0 transaction rows0SGrant / award: 7 transaction rows7AExercise / conversion: 0 transaction rows0MTax / exercise payment: 1 transaction rows1FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

8 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-04-15
2026-04-16
Smyth Antonio PF · Tax / exercise payment
Disposed
Common Stock1259.072.18
2026-04-10
2026-04-14
Raymond ChristieA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
1043.0973.1
2026-04-10
2026-04-14
Falotico Nancy JoyA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
778.0473.1
2026-04-10
2026-04-14
Cortina Ignacio AA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
666.973.1
2026-04-10
2026-04-14
Garcia Michael DennisA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
875.5173.1
2026-04-10
2026-04-14
Cox StephanieA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
547.273.1
2026-04-10
2026-04-14
Newport Roger KA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
769.4973.1
2026-04-10
2026-04-14
ALLEN PATRICK EA · Grant / award
Acquired
Deferred Common Stock Units
Derivative security
513.073.1

Identity & relationships

Wikidata structured data · retrieved 2026-09-07 · 1611 unambiguous CIK-linked entities; coverage is incomplete

These are sourced identity and relationship claims, with incomplete coverage. Headquarters locations do not describe sales, assets or operating exposure.

SEC issuer · 0000352541ALLIANT ENERGY CORP

No parent relationship is available in this import; this is not proof of independence.

No verified LEI join available.

GLEIF legal entity reference data · retrieved 2026-09-07 · 1177 checked identities; 0 unavailable records

Search names and former names

View Wikidata identity and references ↗

  • Alliant Energy · alias · wikidata
  • ALLIANT ENERGY CORP · former SEC name · 1999-12-15 to 2026-08-21
  • INTERSTATE ENERGY CORP · former SEC name · 1998-05-27 to 1999-05-13
  • WPL HOLDINGS INC · former SEC name · 1994-11-14 to 1998-02-23
Explore headquarters map ↗

Revenue in constant purchasing power

USD revenue expressed in 2026-07 consumer-price dollars. Each annual period uses a CPI-U average weighted by the days in its actual reporting interval. This is a purchasing-power comparison, not a company-specific price or volume measure.

Year endedReported USD revenueCPI-adjusted USD revenue
2024-12-31$3.98B$4.24B
2023-12-31$4.03B$4.41B
2022-12-31$4.21B$4.80B
2021-12-31$3.67B$4.52B
2020-12-31$3.42B$4.41B
2019-12-31$3.65B$4.76B
2018-12-31$3.53B$4.70B
2017-12-31$3.38B$4.61B

Bureau of Labor Statistics · retrieved 2026-09-07 · 9 selected series; gaps remain missing

Explore the CPI history ↗