---
schema_version: "secwatch.filing_event.v1"
accession: "0000352541-23-000115"
form_type: "8-K"
ticker: "LNT"
cik: "0000352541"
company_name: "ALLIANT ENERGY CORP"
filed_at: "2023-11-13T23:59:59+00:00"
generated_at: "2026-06-08T05:49:56.014962+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Alliant Energy Finance issues $300M 5.950% senior notes due 2029, guaranteed by parent

## Summary
- $300M aggregate principal of 5.950% senior unsecured notes, maturing March 30, 2029.
- Notes are fully and unconditionally guaranteed on a senior unsecured basis by Alliant Energy Corp.
- Net proceeds to reduce outstanding commercial paper and for general corporate purposes.
- Interest payable semi-annually on March 30 and September 30, beginning March 30, 2024.
- Offering closed on November 10, 2023; priced on November 7, 2023.

## SEC filing metadata
- accession: 0000352541-23-000115
- form_type: 8-K
- ticker: LNT
- cik: 0000352541
- company_name: ALLIANT ENERGY CORP
- filed_at: 2023-11-13T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/lnt-20231107.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000352541-23-000115
- JSON: https://secwatch.observer/filing/0000352541-23-000115.json
- Plain text: https://secwatch.observer/filing/0000352541-23-000115.txt

## Key facts
- Debt Financings
  ALLIANT ENERGY CORP incurred senior notes of $300 million aggregate principal amount with The Bank of New York Mellon Trust Company, N.A. at 5.950% per annum maturing March 30, 2029.
  - Instrument: senior notes
  - Principal: $300 million aggregate principal amount
  - Counterparty: The Bank of New York Mellon Trust Company, N.A.
  - Rate: 5.950% per annum
  - Maturity: March 30, 2029
  - Event: incurrence
  source text: Alliant Energy Finance, LLC (“AEF”), a wholly-owned subsidiary of Alliant Energy Corporation (“Alliant Energy”), issued $300 million aggregate principal amount of its 5.950% Senior Notes due 2029 (the “Notes”), which are fully and unconditionally guaranteed by Alliant Energy on a senior unsecured basis.
  evidence_url: https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm
- Material Agreements
  ALLIANT ENERGY CORP entered into Indenture with The Bank of New York Mellon Trust Company, N.A. valued at $300 million aggregate principal amount (effective 2023-11-10).
  - Action: entry
  - Agreement: notes offering
  - Counterparty: The Bank of New York Mellon Trust Company, N.A.
  - Value: $300 million aggregate principal amount
  - Effective: 2023-11-10
  source text: issued $300 million aggregate principal amount of its 5.950% Senior Notes due 2029 (the “Notes”), which are fully and unconditionally guaranteed by Alliant Energy on a senior unsecured basis
  evidence_url: https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm
- Material Agreements
  ALLIANT ENERGY CORP entered into a notes offering valued at $300 million aggregate principal amount (effective 2023-11-10).
  - Action: entry
  - Agreement: notes offering
  - Value: $300 million aggregate principal amount
  - Effective: 2023-11-10
  source text: On November 10, 2023, Alliant Energy Finance, LLC (“AEF”), a wholly-owned subsidiary of Alliant Energy Corporation (“Alliant Energy”), issued $300 million aggregate principal amount of its 5.950% Senior Notes due 2029
  evidence_url: https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.