IRON MOUNTAIN INCORPORATED
IRON MOUNTAIN INCORPORATED is a registered legal entity registered in United States under 2246564, and its current status with Delaware Division of Corporations is inactive. The company was incorporated on 11 March 1991 and lists its registered address as United States. 5 shareholders are on record for IRON MOUNTAIN INCORPORATED, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Delaware Division of Corporations and was last updated on 29 September 2026.
- Company fundamentals
- Corporate linkage & group structures
- Digitized company financials
- Firmographics — websites, social profiles, revenue and employee estimates
Shareholders
5
Shareholders of IRON MOUNTAIN INCORPORATED
Five shareholders are currently on record for IRON MOUNTAIN INCORPORATED, reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 23.5% — the largest recorded stake — followed by Principal Financial Group, Inc. at 2.1%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Data-provider feed — rows as supplied to Zavia for Delaware Division of Corporations, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Vanguard Group Inc | 23.5% | Delaware Division of Corporations | |
| Principal Financial Group, Inc. | 2.1% | Delaware Division of Corporations | |
| iShares Trust-iShares Core S&P 500 ETF | 1.9% | Delaware Division of Corporations | |
| Fidelity Concord Street Trust-Fidelity 500 Index Fund | 1.9% | Delaware Division of Corporations | |
| SPDR S&P 500 ETF TRUST | 1.8% | Delaware Division of Corporations |
Officers
5
Directors and officers of IRON MOUNTAIN INCORPORATED
The Senior Vp & Head Of Investor Relations of IRON MOUNTAIN INCORPORATED currently on record is Gillian Tiltman; five officers are currently on record for IRON MOUNTAIN INCORPORATED, filed with Delaware Division of Corporations. Management authority at IRON MOUNTAIN INCORPORATED sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control. The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Data availability
The register reports 15 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Data-provider feed — rows as supplied to Zavia for Delaware Division of Corporations, including entries the profile above does not cover. These rows are not a verbatim copy of the register: they have been found to duplicate the same person under different spellings and to keep a status of Active after an appointment ended. Where they disagree with the profile above, the profile is the checked version.
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring.
Frequently Asked Questions
Who owns IRON MOUNTAIN INCORPORATED?
Five shareholders are currently on record for IRON MOUNTAIN INCORPORATED, reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 23.5% — the largest recorded stake — followed by Principal Financial Group, Inc. at 2.1%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is IRON MOUNTAIN INCORPORATED's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for IRON MOUNTAIN INCORPORATED is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does IRON MOUNTAIN INCORPORATED have on record?
5 shareholders are shown on record for IRON MOUNTAIN INCORPORATED.
What is IRON MOUNTAIN INCORPORATED's company registration number?
IRON MOUNTAIN INCORPORATED's registration number is 2246564, filed with Delaware Division of Corporations in United States. Its current status on the register is inactive.
Is IRON MOUNTAIN INCORPORATED still an active company?
IRON MOUNTAIN INCORPORATED's status on Delaware Division of Corporations is listed as inactive, not currently active.
When was IRON MOUNTAIN INCORPORATED incorporated?
IRON MOUNTAIN INCORPORATED was incorporated on 11 March 1991, according to Delaware Division of Corporations.
What is IRON MOUNTAIN INCORPORATED's registered address?
The registered address on file for IRON MOUNTAIN INCORPORATED is United States.
Who are the officers/directors of IRON MOUNTAIN INCORPORATED?
The Senior Vp & Head Of Investor Relations of IRON MOUNTAIN INCORPORATED currently on record is Gillian Tiltman; five officers are currently on record for IRON MOUNTAIN INCORPORATED, filed with Delaware Division of Corporations. Management authority at IRON MOUNTAIN INCORPORATED sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Can Zavia monitor changes to IRON MOUNTAIN INCORPORATED's ownership over time?
This profile reflects a point-in-time snapshot from Delaware Division of Corporations. Zavia's monitoring API can track changes to IRON MOUNTAIN INCORPORATED's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access IRON MOUNTAIN INCORPORATED's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like IRON MOUNTAIN INCORPORATED's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Delaware Division of Corporations and was last synced on 29 September 2026.