EntityWire/Pennsylvania business entity search →/IRON MOUNTAIN INCORPORATED
Employer with a benefit plan
IRON MOUNTAIN INCORPORATED
IRON MOUNTAIN INCORPORATED's Employer Identification Number (EIN) is 23-2588479.
At a glance
- EIN
- 23-2588479 · 232588479
- Legal name
- IRON MOUNTAIN INCORPORATED
- Also filed as
- IRON MOUNTAIN INC/PA
- Address on file
- 1101 ENTERPRISE DRIVE, ROYERSFORD, PA 19468
- Records show
- SEC filer; employer with a benefit plan; state registration
- Latest record
- 2026-09-05
State registration
Texas Comptroller active franchise taxpayers file · records as of 2026-09-05
- Texas registration
- Active · Foreign profit corporation
- Source: Texas Comptroller · as of 2026-09-05
- Texas document number
- 0802144639
- Source: Texas Comptroller · as of 2026-09-05
SEC records
SEC EDGAR company filings · records as of 2026-09-02
- SEC CIK
- 0001020569
- Source: SEC · as of 2026-09-02
- Industry (SIC)
- Real Estate Investment Trusts (6798)
- Source: SEC · as of 2026-09-02
- State of incorporation
- DE
- Source: SEC · as of 2026-09-02
- Ticker
- IRM
- Source: SEC · as of 2026-09-02
- Latest SEC filing
- 4 2026-09-02
- Source: SEC · as of 2026-09-02
Benefit plans
DOL Form 5500 filings (EFAST2) · records as of 2025-11-05
- Benefit plan 510, 2024 filing
- THE IRON MOUNTAIN COMPANIES WELFARE PLAN
- Source: DOL 5500 · as of 2025-11-05
- Participants (start of year)
- 10,031
- Source: DOL 5500 · as of 2025-11-05
- Plan features
- Health (other than dental or vision); Life insurance; Dental; Vision; Temporary disability; Prepaid legal
- Source: DOL 5500 · as of 2025-11-05
- Plan type
- Single-employer plan
- Source: DOL 5500 · as of 2025-11-05
- Business code (NAICS)
- 493100
- Source: DOL 5500 · as of 2025-11-05
- Benefit plan 1, 2024 filing
- THE IRON MOUNTAIN COMPANIES 401(K) PLAN
- Source: DOL 5500 · as of 2025-10-10
- Participants (start of year)
- 12,353
- Source: DOL 5500 · as of 2025-10-10
What this record is
Public filings that carry this EIN (DOL Form 5500 filings (EFAST2), DOL Form 5500-SF filings (EFAST2), SEC EDGAR company filings and Texas Comptroller active franchise taxpayers file), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.
What it is not
Registry status, formation date, and registered agent come from the Pennsylvania Department of State, Bureau of Corporations and Charitable Organizations; see the Pennsylvania business entity search.
If something is wrong
A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.
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