Iron Mountain Inc
IRM- Exchange
- NYSE
- Industry
- Real Estate Investment Trusts
- SEC CIK
- 0001020569
In the last 90 days, Iron Mountain Inc insiders filed 0 open-market purchases and 8 sales; 1,173 institutions reported holding it in 13F filings for Q2 2026, worth $32.5B in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $18.1M in total
- 8
- 13F holdersQ2 2026, +93 vs. previous quarter
- 1,173
- 13F valueReported value at the end of Q2 2026
- $32.5B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding IRM, Q2 2026
No superinvestor reported holding IRM at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Iron Mountain Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 2, 2026 (view filing)4:27 PM ET | Sep 1 | 1 day | Meaney William LPresident and CEO | SSaleCommon Stock, par value $.01 per share | −38.5K | $114.08 | −$4.39M | −100.0%0 after | 4 lots10b5-1 |
| Sep 2, 2026 (view filing)4:22 PM ET | Sep 1 | 1 day | McIntosh Greg WEVP, Chief Commercial Officer | SSaleCommon Stock, par value $.01 per share | −5.00K | $115.60 | −$578.0K | −6.2%75.6K after | 10b5-1 |
| Sep 2, 2026 (view filing)4:20 PM ET | Sep 1 | 1 day | Kidd MarkEVP, GM Data Centers & ALM | SSaleCommon Stock, par value $.01 per share | −6.00K | $115.60 | −$693.6K | −5.9%95.5K after | 10b5-1 |
| Aug 10, 2026 (view filing)4:12 PM ET | Aug 7 | 3 days | Meaney William LPresident and CEO | SSaleCommon Stock, par value $.01 per share | −38.5K | $121.67 | −$4.68M | −100.0%0 after | 3 lots10b5-1 |
| Aug 10, 2026 (view filing)4:08 PM ET | Aug 7 | 3 days | Kidd MarkEVP, GM Data Centers & ALM | SSaleCommon Stock, par value $.01 per share | −6.00K | $122.70 | −$736.2K | −5.6%101.5K after | 10b5-1 |
| Aug 10, 2026 (view filing)4:03 PM ET | Aug 6 | 4 days | McIntosh Greg WEVP, Chief Commercial Officer | SSaleCommon Stock, par value $.01 per share | −11.8K | $127.13 | −$1.51M | −12.8%80.6K after | 2 lots10b5-1 |
| Jul 2, 2026 (view filing)4:39 PM ET | Jul 1 | 1 day | Meaney William LPresident and CEO | SSaleCommon Stock, par value $.01 per share | −38.5K | $122.83 | −$4.73M | −100.0%0 after | 5 lots10b5-1 |
| Jul 2, 2026 (view filing)4:30 PM ET | Jul 1 | 1 day | Kidd MarkEVP, GM Data Centers & ALM | SSaleCommon Stock, par value $.01 per share | −6.00K | $125.62 | −$753.7K | −5.3%107.5K after | 10b5-1 |
| Jun 2, 2026 (view filing) | Jun 1 | 1 day | Kidd MarkEVP, GM Data Centers & ALM | SSaleCommon Stock, par value $.01 per share | −6.00K | $126.70 | −$760.2K | −5.0%113.5K after | 10b5-1 |
| Jun 2, 2026 (view filing) | Jun 1 | 1 day | Meaney William LPresident and CEO | SSaleCommon Stock, par value $.01 per share | −38.5K | $127.55 | −$4.91M | −100.0%0 after | 5 lots10b5-1 |
Top 10 13F holders, Q2 2026
The largest institutional positions in Iron Mountain Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 33,570,910 | $4.24B | 0.06% | +549,556+1.7% | Added |
| Vanguard Portfolio Management LLC | 25,568,944 | $3.23B | 0.15% | +553,387+2.2% | Added |
| Vanguard Capital Management LLC | 18,953,705 | $2.39B | 0.05% | +194,816+1.0% | Added |
| State Street Corp | 17,634,044 | $2.24B | 0.07% | +82,411+0.5% | Added |
| Cohen & Steers, Inc. | 12,019,735 | $1.52B | 2.40% | −4,149,606−25.7% | Reduced |
| Geode Capital Management, LLC | 8,649,249 | $1.09B | 0.06% | +163,122+1.9% | Added |
| FMR LLC | 7,872,365 | $994.4M | 0.04% | +387,967+5.2% | Added |
| Dimensional Fund Advisors LP | 4,625,684 | $584.3M | 0.11% | +73,398+1.6% | Added |
| Morgan Stanley | 4,426,922 | $559.2M | 0.03% | −225,325−4.8% | Reduced |
| Principal Financial Group Inc | 4,373,424 | $552.4M | 0.27% | −192,669−4.2% | Reduced |