Iron Mountain (IRM)
Secures business records, data-center capacity, and retired IT assets across their lifecycles.
$118.13
After hours−0.01 (−0.01%)
At close$118.14(+1.07%)
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13F · 13D/G · Form 4
| Institutions | 87.81% | 261.40M shares | |
|---|---|---|---|
| 1,211 holders · as of Jun 30, 2026 | |||
| Insiders | 0.31% | 922.6K shares | |
| 16 holders · as of Sep 2, 2026 | |||
| Other | 11.88% | 35.38M shares | |
| remainder | |||
297.70M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
1,211 holders · 261.40M shares · 158 new positions · 603 increased · 392 reduced · 75 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 33.57M | 11.28% | +549.6K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 25.57M | 8.59% | +553.4K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 18.95M | 6.37% | +194.8K | Aug 13, 2026 |
| State Street Corp | 17.63M | 5.92% | +82.4K | Aug 7, 2026 |
| Cohen & Steers, Inc. | 12.02M | 4.04% | −4.15M | Aug 14, 2026 |
| Geode Capital Management, LLC | 8.65M | 2.91% | +163.1K | Aug 12, 2026 |
| FMR LLC | 7.87M | 2.64% | +388.0K | Aug 13, 2026 |
| Dimensional Fund Advisors LP | 4.63M | 1.55% | +73.4K | Aug 11, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Vanguard Portfolio Management | 8.42% | 25.05M | 13G | Apr 29, 2026 |
| Vanguard Capital Management | 7.35% | 21.87M | 13G | Apr 30, 2026 |
| State Street Corporation | 5.70% | 16.57M | Oct 17, 2024 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 1, 2026 | William L. Meaneydirector, officer: President and CEO | Sale · 4 lots | 38,474 | $114.08 | 0 |
| Sep 1, 2026 | Greg W. McIntoshofficer: EVP, Chief Commercial Officer | Sale | 5,000 | $115.60 | 75,634 |
| Sep 1, 2026 | Mark Kiddofficer: EVP, GM Data Centers & ALM | Sale | 6,000 | $115.60 | 95,507 |
| Aug 7, 2026 | William L. Meaneydirector, officer: President and CEO | Sale · 3 lots | 38,474 | $121.67 | 0 |
| Aug 7, 2026 | Mark Kiddofficer: EVP, GM Data Centers & ALM | Sale | 6,000 | $122.70 | 101,507 |
| Aug 6, 2026 | Greg W. McIntoshofficer: EVP, Chief Commercial Officer | Sale | 6,839 | $127.13 | 80,634 |
| Jul 1, 2026 | Mark Kiddofficer: EVP, GM Data Centers & ALM | Sale | 6,000 | $125.62 | 107,507 |
| Jul 1, 2026 | William L. Meaneydirector, officer: President and CEO | Sale · 5 lots | 38,474 | $122.83 | 0 |
| Jun 1, 2026 | Mark Kiddofficer: EVP, GM Data Centers & ALM | Sale | 6,000 | $126.70 | 113,507 |
| Jun 1, 2026 | William L. Meaneydirector, officer: President and CEO | Sale · 5 lots | 38,474 | $127.55 | 0 |
House and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Sen. Markwayne Mullin · OK | Sale | $1,001 – $15,000 | Joint | Feb 4, 2026 | Mar 2, 2026 |