Iron Mountain Incorporated401(k)
THE IRON MOUNTAIN COMPANIES 401(K) PLAN · ROYERSFORD, PA · plan year 2024
Peer grade: C+ · admin costs + employer contributions vs same-size plans · how grading works
Iron Mountain Incorporated reported $922,129 in plan administrative expenses for 2024: 0.11% of average plan assets, above the peer median. Employer contributions averaged $2,743 per active participant. This ratio covers administrative expenses reported on the plan's Schedule H only; fund-level expense ratios are not included in public structured data — see methodology.
Across the 2 years on file its reported administrative ratio fell from 0.33% to 0.11%. The plan sits in the $250M–$1B size bracket, benchmarked here against 2,883 comparable plans and shown alongside other transportation & warehousing employers. By assets it is the 83rd-largest of 3,651 plans among Pennsylvania employers on file, and the 44th of 2,677 in transportation & warehousing. In 2024, employees put in $2.12 for every $1.00 the employer contributed; active participation has grown from 8,643 to 10,113 since 2022.
Iron Mountain Incorporated's 2024 employer contribution ran below the $4,294 median for plans its size. Filings report dollars actually contributed, not the match formula; the formula itself (for example, 50% of the first 6% of pay) lives in the plan's summary plan description from HR.
Annual cost at the plan's reported 2024 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.
Compensation shown is direct payments from plan assets reported on Schedule C. Providers paid through fund revenue-sharing appear as indirect.
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Source: U.S. Department of Labor, Form 5500 series, EIN 232588479 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.