---
schema_version: "secwatch.filing_event.v1"
accession: "0000352541-24-000084"
form_type: "8-K"
ticker: "LNT"
cik: "0000352541"
company_name: "ALLIANT ENERGY CORP"
filed_at: "2024-07-26T23:59:59+00:00"
generated_at: "2026-05-31T16:04:11.542524+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Alliant Energy 401(k) blackout period Aug 30 - week of Sep 22, 2024 due to service provider switch to Fidelity

## Summary
- Blackout begins Aug 30, 2024 at 3:00 p.m. CT and ends during the week of Sep 22, 2024.
- Plan changes recordkeeping and trustee services to Fidelity Workplace Services, LLC.
- Participants cannot change contributions, investments, or request loans/distributions during blackout.
- Directors and executive officers prohibited from trading Alliant Energy stock (LNT) during blackout under Reg BTR.
- Notice sent to directors/executives on Jul 26, 2024; contacts: Omar Chaudhary (608-458-3186).

## SEC filing metadata
- accession: 0000352541-24-000084
- form_type: 8-K
- ticker: LNT
- cik: 0000352541
- company_name: ALLIANT ENERGY CORP
- filed_at: 2024-07-26T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.04, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/352541/000035254124000084/0000352541-24-000084-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/352541/000035254124000084/lnt-20240722.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000352541-24-000084
- JSON: https://secwatch.observer/filing/0000352541-24-000084.json
- Plain text: https://secwatch.observer/filing/0000352541-24-000084.txt

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