---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-228913"
form_type: "8-K"
ticker: "NI"
cik: "0001111711"
company_name: "NISOURCE INC."
filed_at: "2026-05-18T20:06:22+00:00"
generated_at: "2026-05-18T20:09:26.389381+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# NiSource issues $1.25B in debt: $500M 4.750% notes due 2031 and $750M 5.300% notes due 2036

## Summary
- $500M 4.750% Notes due 2031 and $750M 5.300% Notes due 2036 sold under Terms Agreement dated May 11, 2026.
- Offering closed May 18, 2026; proceeds for general corporate purposes including capex, working capital, and debt repayment.
- Lead underwriters: BNP Paribas, BofA Securities, MUFG, and U.S. Bancorp Investments.

## SEC filing metadata
- accession: 0001193125-26-228913
- form_type: 8-K
- ticker: NI
- cik: 0001111711
- company_name: NISOURCE INC.
- filed_at: 2026-05-18T20:06:22+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/1111711/000119312526228913/0001193125-26-228913-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1111711/000119312526228913/d119463d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-228913
- JSON: https://secwatch.observer/filing/0001193125-26-228913.json
- Plain text: https://secwatch.observer/filing/0001193125-26-228913.txt

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