Companies / Iron Mountain Inc
Iron Mountain Inc
Financials · FY2025
Ownership
297.7M shares outstanding · as of Jul 24, 2026
Ownership
| Insiders | 0.64% | 1,910,834 |
| 10%+ / strategic | 22.18% | 66,029,978 |
| Institutions | 81.34% | 242,141,951 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 18
View all →| Insider | % of shares | Shares |
|---|---|---|
Dauten Kent PDirector | 0.41% | 1,209,573 |
Hytinen BarryEVP and CFO | 0.11% | 326,623 |
Kidd MarkEVP, GM Data Centers & ALM | 0.04% | 113,507 |
McIntosh Greg WEVP, Chief Commercial Officer | 0.03% | 85,634 |
Arway Pamela MDirector | 0.01% | 40,196 |
Ford Monte EDirector | 0.01% | 31,817 |
Matlock RobinDirector | 0.01% | 30,451 |
Rakowich Walter CDirector | <0.01% | 25,000 |
Bhargava MithuEVP, GM Digital Business Unit | <0.01% | 16,054 |
Allerton JenniferDirector | <0.01% | 13,300 |
Institutional holders 1,024
View all →| Holder | Value | % of shares |
|---|---|---|
| $4.24B | 11.28% | |
| $3.87B | 15.66% | |
| $2.24B | 5.92% | |
| $863.70M | 2.85% | |
| $662.30M | 2.68% | |
| $466.38M | 1.53% | |
| $385.13M | 1.02% | |
| $368.89M | 1.49% | |
| $367.42M | 1.49% | |
| $366.42M | 1.48% |
Activity
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Mar 1, 2026 | Meaney William L CEO | Other | Common Stock, par value $.01 per share | $27.74M | -256K -39.35% | 394,634 0.13% of shares | low |
| Mar 1, 2026 | Hytinen Barry Executive | Other | Common Stock, par value $.01 per share | $11.36M | -105K -24.30% | 326,623 0.11% of shares | low |
| Mar 4, 2026 | Meaney William L CEO | Sell | Common Stock, par value $.01 per share | $7.63M | -71K -41.84% | 98,657 0.03% of shares | medium |
| Mar 1, 2026 | Kidd Mark Executive | Other | Common Stock, par value $.01 per share | $6.65M | -61K -30.85% | 137,507 0.05% of shares | low |
| Mar 1, 2026 | McIntosh Greg W Executive | Other | Common Stock, par value $.01 per share | $6.02M | -56K -39.37% | 85,634 0.03% of shares | low |
| Mar 2, 2026 | Meaney William L CEO | Sell | Common Stock, par value $.01 per share | $4.56M | -41K -12.17% | 299,175 0.10% of shares | medium |
| Feb 20, 2026 | Meaney William L CEO | Sell | Common Stock, par value $.01 per share | $4.16M | -38K -100.00% | 0 0.00% of shares | medium |
| Mar 5, 2026 | Meaney William L CEO | Sell | Common Stock, par value $.01 per share | $4.07M | -38K -100.00% | 0 0.00% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Cohen & Steers, Inc. | Passive13G/A | — |
| Vanguard Group Inc | Passive13G/A | — |
| Cohen & Steers, Inc. | Passive13G/A | — |
| Vanguard Portfolio Management | Passive13G | — |
| Vanguard Capital Management | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| IRM | — | 46284V101 |