Iron Mountain Inc
A records and information management company, Iron Mountain stores and protects documents, data, and media for businesses and institutions, guarding everything from paper archives to digital backups and even physical artwork. It traces back to 1951, when a mushroom farmer named Herman Knaust bought a shuttered iron ore mine in upstate New York and began renting out the cool, fireproof underground caverns as a safe place to store film and documents — giving the company its name. The company is perhaps best known today for its towering, fortress-like data centers and the vast underground facility where it safeguards irreplaceable film, tapes, and master recordings.
Common Stock REIT
Granted 6.5K
Granted 3.12M · Sold 2.48M
Granted 465.8K · Sold 9.0K
Granted 90.9K
Granted 253.9K · Sold 95.1K
Granted 263.1K · Sold 74.3K
Granted 41.8K · Sold 26.2K
Granted 6.5K · Sold 1.9K
Granted 6.5K
Granted 9.4K · Sold 940.67
Granted 6.5K · Sold 2.6K
Granted 136.1K · Sold 69.7K
Granted 2.4K · Sold 13.5K
Granted 68.6K · Sold 83.3K
Granted 6.5K · Sold 7.0K
Granted 8.4K
Granted 39.0K · Sold 22.7K
Granted 4.9K
Granted 3.2K · Bought 33
Granted 1.9K
Granted 1.6K
Granted 1.9K
Granted 27.1K · Sold 17.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Dauten Kent PDirector · 5 transactions | -19.5% | 1.21M | 6.5K | — | — |
| Meaney William LPresident and CEO, Director · 172 transactions | — | 591.3K | 3.12M | — | 2.48M |
| Hytinen BarryEVP and CFO · 13 transactions | +307.3% | 326.6K | 465.8K | — | 9.0K |
| Bailey Clark HDirector · 1 transaction | +39.2% | 267.3Kas of Jul 2025 | 90.9K | — | — |
| Kidd MarkEVP, GM Data Centers & ALM · 31 transactions | +121.3% | 113.5K | 253.9K | — | 95.1K |
| McIntosh Greg WEVP, Chief Commercial Officer · 21 transactions | +416.4% | 85.6K | 263.1K | — | 74.3K |
| Marson DeborahEVP, General Counsel, Sec. · 20 transactions | -0.6% | 59.7Kas of Sep 2024 | 41.8K | — | 26.2K |
| Arway Pamela MDirector · 4 transactions | +13% | 40.2K | 6.5K | — | 1.9K |
| Ford Monte EDirector · 3 transactions | +25.8% | 31.8K | 6.5K | — | — |
| Matlock RobinDirector · 8 transactions | +38.7% | 30.5K | 9.4K | — | 940.67 |
| Rakowich Walter CDirector · 8 transactions | — | 25.0K | 6.5K | — | 2.6K |
| Bhargava MithuEVP, GM Digital Business Unit · 19 transactions | — | 16.1K | 136.1K | — | 69.7K |
| Murdock Wendy J.Director · 4 transactions | -42.9% | 14.8Kas of Sep 2024 | 2.4K | — | 13.5K |
| Tomovcsik JohnEVP, Chief Operating Officer · 15 transactions | -72.3% | 14.0Kas of Aug 2024 | 68.6K | — | 83.3K |
| Allerton JenniferDirector · 7 transactions | -8.2% | 13.4K | 6.5K | — | 7.0K |
| Altamura Michelle VervaisEVP, General Counsel, Sec. · 16 transactions | — | 7.0K | 8.4K | — | — |
| Baker-Greene EdwardEVP, CHRO · 16 transactions | -16.5% | 6.9Kas of Dec 2024 | 39.0K | — | 22.7K |
| Felix June YeeDirector · 3 transactions | — | 4.9K | 4.9K | — | — |
| Kelly Christie B.Director · 3 transactions | — | 3.2K | 3.2K | 33 | — |
| Simons DoyleDirector · 1 transaction | — | 1.9K | 1.9K | — | — |
| Maciel AndreDirector · 1 transaction | — | 1.6Kas of Jul 2024 | 1.6K | — | — |
| Johns JemmaEVP, CHRO · 2 transactions | — | 965 | 1.9K | — | — |
| Borges DanielSVP & Chief Accounting Officer · 28 transactions | — | 0 | 27.1K | — | 17.7K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -2.91M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.