Transaction · 0001769841-26-000005

McIntosh Greg W

McIntosh Greg W, EVP, CCO, reported a transaction classified as withholding at IRON MOUNTAIN INC involving 55617.000000 shares for an estimated $6024989.61. Reported holdings after the transaction were 85634.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

withholdingSEC transaction code FEVP, CCO
IRMIRON MOUNTAIN INC
Filing timeMar 03
Trade dateMar 01, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$107.78
Pre-filing
1mo ago -14.5%1w ago +2.3%1d ago +0.5%
Returns since
7d -0.0%30d -4.2%90d +17.3%180d +8.9%1y +8.9%

IRM price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
IRM since 2026-03-03Filed 184 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0001769841-26-000005
Common Stock, par value $.01 per share
Transaction date
Mar 01, 2026
Filed Mar 03, 2026, 12:00 AM · 2d delay
Shares
55.6k sh
$10.8k per share
Estimated value
-$602M
Computed from shares × price
Holdings after
85.6k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership Large Holdings Reduction
-12score
Filing-only score

-12

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

EVP, Chief Commercial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2023. Effective February 16, 2026, the Compensation Committ…

  2. F2

    Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding obligation in connection with the net settlement of the PUs and does not rep…

  3. F3

    Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

  4. F4

    The PUs were initially granted to the Reporting Person on March 1, 2023. Effective as of February 16, 2026, the Compensation Committee determined the actual award of PUs under the grant after completi…

Original filing · 0001769841-26-000005
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