Is Iron Mountain Inc an American company?
Yes — Iron Mountain Inc is an American company.
Iron Mountain Inc is incorporated in Delaware, United States and headquartered in Portsmouth, New Hampshire. Its legal-entity record reports no foreign parent — the company is independently American-owned.
The evidence
- Legal name
- IRON MOUNTAIN INC
- Incorporated in
- Delaware, United States
- Registered office
- WILMINGTON, the United States
- Headquarters
- Portsmouth, New Hampshire, United States
- Ultimate owner
- None reported (independent)
- Stock listing
- NYSE: IRM on NYSE
- LEI
- 549300RUAW0D4WBMPU54
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.
Iron Mountain Inc: origin questions
Is Iron Mountain Inc an American company?
Yes — Iron Mountain Inc is an American company. Iron Mountain Inc is incorporated in Delaware, United States and headquartered in Portsmouth, New Hampshire. Its legal-entity record reports no foreign parent — the company is independently American-owned.
Where is Iron Mountain Inc incorporated?
Iron Mountain Inc is legally incorporated in Delaware, United States, according to its GLEIF legal-entity record.
Who owns Iron Mountain Inc?
Iron Mountain Inc reports no parent company in its legal-entity record — it is independently owned rather than a subsidiary.
Is Iron Mountain Inc traded on a US stock exchange?
Yes — Iron Mountain Inc trades under the ticker IRM on the NYSE.
See the full Iron Mountain Inc company profile — financials, stock data and trust credentials — or browse the directory of American companies.