Transaction · 0001732058-26-000009

Kidd Mark

Kidd Mark, EVP, GDC, ALM, reported an open-market or private sale at IRON MOUNTAIN INC involving 6000.000000 shares for an estimated $643620.00. Reported holdings after the transaction were 131507.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SEVP, GDC, ALM
IRMIRON MOUNTAIN INC
Filing timeMar 03
Trade dateMar 02, 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 +3.2%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
Sell
Code S
Identifier
0001732058-26-000009
Common Stock, par value $.01 per share
Transaction date
Mar 02, 2026
Filed Mar 03, 2026, 12:00 AM · 1d delay
Shares
6.00k sh
$10.7k per share
Estimated value
-$64.3M
Computed from shares × price
Holdings after
131k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Direct Ownership Repeat Seller 10b5-1 Detected
0score
Filing-only score

0

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

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

EVP, GM Data Centers & ALM

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

    The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 20, 2025.

  4. F4

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

  5. F5

    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 · 0001732058-26-000009
Related transactions

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Same reporting owner
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