Is Nisource Inc. an American company?
Yes — Nisource Inc. is an American company.
Nisource Inc. is incorporated in Delaware, United States and headquartered in Merrillville, Indiana. Its legal-entity record reports no foreign parent — the company is independently American-owned.
The evidence
- Legal name
- NISOURCE INC.
- Incorporated in
- Delaware, United States
- Registered office
- WILMINGTON, the United States
- Headquarters
- Merrillville, Indiana, United States
- Ultimate owner
- None reported (independent)
- Stock listing
- NYSE: NI on NYSE
- LEI
- 549300D8GOWWH0SJB189
Source: GLEIF, the global Legal Entity Identifier registry · checked Jul 26, 2026. A US headquarters or stock listing does not always mean US incorporation — this page reports what the legal-entity registry actually records.
Nisource Inc.: origin questions
Is Nisource Inc. an American company?
Yes — Nisource Inc. is an American company. Nisource Inc. is incorporated in Delaware, United States and headquartered in Merrillville, Indiana. Its legal-entity record reports no foreign parent — the company is independently American-owned.
Where is Nisource Inc. incorporated?
Nisource Inc. is legally incorporated in Delaware, United States, according to its GLEIF legal-entity record.
Who owns Nisource Inc.?
Nisource Inc. reports no parent company in its legal-entity record — it is independently owned rather than a subsidiary.
Is Nisource Inc. traded on a US stock exchange?
Yes — Nisource Inc. trades under the ticker NI on the NYSE.
See the full Nisource Inc. company profile — financials, stock data and trust credentials — or browse the directory of American companies.