Iron Mountain Inc. (IRM)
NYSE: IRM · Real Estate Investment Trusts · Portsmouth, NH · filing with the SEC since 1996
Grade5.2
◀ Past 6.1● Present 5.0▶ Future 4.6
Who owns Iron Mountain Inc.
As filed with the SECHolders of 5% or more
2
Vanguard Portfolio Management holds 8.42% of Common Stock, as its SCHEDULE 13G filed Apr 29, 2026 says.
Directors and officers
18
report now, of 44 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Cohen & Steers Inc.
SCHEDULE 13G/A · filed May 7, 2026 · Common Stock · reported falling below 5%, from 6.46% in Feb 13, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What IRM reports owning in othersstakes of 5% or more, and other ties
159 subsidiaries in 39 countries, from the list filed with the 10-K filed Feb 12, 2026.
Insider tradesForm 4
74sales
1purchases
73sales on a scheduled plan
8people selling
$114Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 9, 2025 to Nov 9, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 9, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window9 of 44 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Meaney William L | President and CEO | 50 | $95.7M | 50 | 0 | $0 |
| Kidd Mark | EVP, GM Data Centers & ALM | 10 | $6.6M | 10 | 0 | $0 |
| Bhargava Mithu | EVP, GM Digital Business Unit | 5 | $6.2M | 5 | 0 | $0 |
| Mcintosh Greg W | EVP, Chief Commercial Officer | 5 | $3.2M | 5 | 0 | $0 |
| Borges Daniel | SVP & Chief Accounting Officer | 1 | $900,000 | 1 | 0 | $0 |
| Allerton Jennifer | director | 1 | $800,000 | 0 | 0 | $0 |
| Arway Pamela M | director | 1 | $200,000 | 1 | 0 | $0 |
| Rakowich Walter C | director | 1 | $100,000 | 1 | 0 | $0 |
| Kelly Christie B. | director | 0 | $0 | 0 | 1 | $0 |