---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-360020"
form_type: "8-K"
ticker: "LNT"
cik: "0000352541"
company_name: "ALLIANT ENERGY CORP"
filed_at: "2026-08-21T12:45:22+00:00"
generated_at: "2026-08-21T12:50:07.117424+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# IPL prices $500M 5.100% senior debentures due 2031; proceeds for debt reduction

## Summary
- IPL (subsidiary of Alliant Energy, LNT) priced $500M aggregate 5.100% senior debentures due Sept 30, 2031.
- Use of proceeds: reduce receivables purchase/sale program, commercial paper, and general corporate purposes.
- Offering expected to close Aug 21, 2026; joint book-runners include Mizuho, PNC, U.S. Bancorp, Wells Fargo.
- Debentures issued under shelf registration filed Dec 15, 2023 (Reg. No. 333-276062-01).

## SEC filing metadata
- accession: 0001193125-26-360020
- form_type: 8-K
- ticker: LNT
- cik: 0000352541
- company_name: ALLIANT ENERGY CORP
- filed_at: 2026-08-21T12:45:22+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/352541/000119312526360020/0001193125-26-360020-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/52485/000119312526360020/d440334d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-360020
- JSON: https://secwatch.observer/filing/0001193125-26-360020.json
- Plain text: https://secwatch.observer/filing/0001193125-26-360020.txt

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