Theodore R. Samuels - Jul 3, 2025 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)

Role
Director
Signature
/s/ Keely Stewart, under Power of Attorney dated July 6, 2023 from Theodore R Samuels
Stock symbol
IRM
Transactions as of
Jul 3, 2025
Transactions value $
$42,609
Form type
4
Date filed
7/8/2025, 05:11 PM
Previous filing
Jul 1, 2025
Next filing
Jul 29, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Samuels Theodore R. II Director C/O IRON MOUNTAIN INCORPORATED, 85 NEW HAMPSHIRE AVENUE, SUITE 150, PORTSMOUTH /s/ Keely Stewart, under Power of Attorney dated July 6, 2023 from Theodore R Samuels 2025-07-08 0001688276

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction IRM Phantom Stock Award $7.61K +75.7 +0.78% $100.56 9.77K Jul 3, 2025 Common Stock 75.7 Direct F1, F2, F3
transaction IRM Phantom Stock Award $35K +348 +3.56% $100.60 10.1K Jul 7, 2025 Common Stock 348 Direct F1, F4, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan, the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") following the Reporting Person's disability or cessation of service as a director. Each Phantom Share is the economic equivalent of one share of Common Stock.
F2 These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.
F3 The price reported in Column 8 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $100.419 to $100.594, inclusive. The Reporting Person undertakes to provide Iron Mountain Incorporated (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (3).
F4 These shares give effect to the Reporting Person's quarterly cash compensation for services on the board of directors of the Company as if reinvested in Phantom Shares.
F5 The price reported in Column 8 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $100.539 to $100.624, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (5).