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Iron Mountain Incorporated

Royersford, PA, 19468

EIN 23-2588479
Plans
3
Total participants
89,582
Filing years
2024, 2023, 2022, 2021, 2020
NAICS
493100
Plan sponsors in PennsylvaniaTransportation & Warehousing

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500001The Iron Mountain Companies 401(K) Plan10,113
2024Form 5500-SF005The Iron Mountain Companies Puerto Rico 401(K) Plan35
2024Form 5500510The Iron Mountain Companies Welfare Plan10,656
2023Form 5500001The Iron Mountain Companies 401(K) Plan9,146
2023Form 5500-SF005The Iron Mountain Companies Puerto Rico 401(K) Plan36
2023Form 5500510The Iron Mountain Companies Welfare Plan9,413
2022Form 5500001The Iron Mountain Companies 401(K) Plan8,643
2022Form 5500-SF005The Iron Mountain Companies Puerto Rico 401(K) Plan37
2022Form 5500510The Iron Mountain Companies Welfare Plan8,892
2021Form 5500001The Iron Mountain Companies 401(K) Plan7,917
2021Form 5500-SF005The Iron Mountain Companies Puerto Rico 401(K) Plan37
2021Form 5500510The Iron Mountain Companies Welfare Plan8,346
2020Form 5500001The Iron Mountain Companies 401(K) Plan7,874
2020Form 5500-SF005The Iron Mountain Companies Puerto Rico 401(K) Plan44
2020Form 5500510The Iron Mountain Companies Welfare Plan8,393

Data shown as filed with the U.S. Department of Labor (EBSA), filing years 2020–2025; not validated by OpenERISA. View official filings for this EIN on the DOL EFAST2 search.

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