---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-065501"
form_type: "8-K"
ticker: "NI"
cik: "0001111711"
company_name: "NISOURCE INC."
filed_at: "2025-03-27T23:59:59+00:00"
generated_at: "2026-05-24T03:39:06.692141+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# NiSource issues $750M of 5.850% senior notes due 2055

## Summary
- Aggregate principal $750M at 5.850% due 2055; offering closed March 27, 2025.
- Net proceeds for general corporate purposes: capex, working capital, and debt repayment.
- Underwriters: Barclays, BofA Securities, KeyBanc Capital Markets, Wells Fargo Securities.
- Issued under existing shelf registration (Form S-3) and supplemental indenture.

## SEC filing metadata
- accession: 0001193125-25-065501
- form_type: 8-K
- ticker: NI
- cik: 0001111711
- company_name: NISOURCE INC.
- filed_at: 2025-03-27T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1111711/000119312525065501/0001193125-25-065501-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1111711/000119312525065501/d916410d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-065501
- JSON: https://secwatch.observer/filing/0001193125-25-065501.json
- Plain text: https://secwatch.observer/filing/0001193125-25-065501.txt

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