Is Marsh & Mclennan Companies, Inc. an American company?
Yes — Marsh & Mclennan Companies, Inc. is an American company.
Marsh & Mclennan Companies, Inc. is incorporated in Delaware, United States and headquartered in New York, New York. Its legal-entity record reports no foreign parent — the company is independently American-owned.
The evidence
- Legal name
- MARSH & MCLENNAN COMPANIES, INC.
- Incorporated in
- Delaware, United States
- Registered office
- WILMINGTON, the United States
- Headquarters
- New York, New York, United States
- Ultimate owner
- None reported (independent)
- Stock listing
- NYSE: MRSH on NYSE
- LEI
- 549300XMP3KDCKJXIU47
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.
Marsh & Mclennan Companies, Inc.: origin questions
Is Marsh & Mclennan Companies, Inc. an American company?
Yes — Marsh & Mclennan Companies, Inc. is an American company. Marsh & Mclennan Companies, Inc. is incorporated in Delaware, United States and headquartered in New York, New York. Its legal-entity record reports no foreign parent — the company is independently American-owned.
Where is Marsh & Mclennan Companies, Inc. incorporated?
Marsh & Mclennan Companies, Inc. is legally incorporated in Delaware, United States, according to its GLEIF legal-entity record.
Who owns Marsh & Mclennan Companies, Inc.?
Marsh & Mclennan Companies, Inc. reports no parent company in its legal-entity record — it is independently owned rather than a subsidiary.
Is Marsh & Mclennan Companies, Inc. traded on a US stock exchange?
Yes — Marsh & Mclennan Companies, Inc. trades under the ticker MRSH on the NYSE.
See the full Marsh & Mclennan Companies, Inc. company profile — financials, stock data and trust credentials — or browse the directory of American companies.