---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-297656"
form_type: "8-K"
ticker: "NI"
cik: "0001111711"
company_name: "NISOURCE INC."
filed_at: "2023-12-18T23:59:59+00:00"
generated_at: "2026-06-07T11:10:02.191526+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# NiSource amends indenture, reduces NIPSCO ownership covenant from 100% to 70% to avoid default from Blackstone deal

## Summary
- Fourth Supplemental Indenture amends covenant requiring NiSource to own directly or indirectly 100% of NIPSCO to at least 70%.
- Amendment approved by holders of $27.5M (94.83%) of 7.99% notes due 2027 and $3M (100%) of 6.78% notes due 2027.
- Modification avoids a default triggered by NiSource's sale of 19.9% interest in NIPSCO to a Blackstone affiliate.
- The amendment is effective December 18, 2023.

## SEC filing metadata
- accession: 0001193125-23-297656
- form_type: 8-K
- ticker: NI
- cik: 0001111711
- company_name: NISOURCE INC.
- filed_at: 2023-12-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 3.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1111711/000119312523297656/0001193125-23-297656-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1111711/000119312523297656/d654717d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-297656
- JSON: https://secwatch.observer/filing/0001193125-23-297656.json
- Plain text: https://secwatch.observer/filing/0001193125-23-297656.txt

## Key facts
- Material Agreements
  NISOURCE INC. amended Fourth Supplemental Indenture with The Bank of New York Mellon (effective 2023-12-18).
  - Action: amendment
  - Agreement: notes offering
  - Counterparty: The Bank of New York Mellon
  - Effective: 2023-12-18
  source text: On December 18, 2023, NiSource Inc. (“NiSource”) and The Bank of New York Mellon, as trustee, entered into a Fourth Supplemental Indenture (the “Fourth Supplemental Indenture”) to the Company’s Indenture dated as of February 14, 1997, as supplemented by the First Supplemental Indenture dated as of February 16, 1999, the Second Supplemental Indenture dated as of November 1, 2000, and the Third Supplemental Indenture dated as of November 30, 2017 (as supplemented and amended from time to time, the “Indenture”) among NiSource (as successor issuer), and The Bank of New York Mellon (as successor trustee) (the “Trustee”) relating to the Company’s outstanding 7.99% Medium-Term Notes due 2027 (CUSIP No. 65463PBA4) (the “7.99% Notes”) and the 6.78% Senior Notes due 2027 (CUSIP No. 654638AB1) (the “6.78% Notes”, and together with the 7.99% Notes, the “Notes”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1111711/000119312523297656/0001193125-23-297656-index.htm

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