William Meaney - 03 Sep 2025 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)

Signature
/s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney
Issuer symbol
IRM
Transactions as of
03 Sep 2025
Transactions value $
-$6,191,112
Form type
4
Filing time
05 Sep 2025, 16:06:05 UTC
Previous filing
05 Aug 2025
Next filing
03 Oct 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Meaney William L President and CEO, Director C/O IRON MOUNTAIN INCORPORATED, 85 NEW HAMPSHIRE AVENUE, SUITE 150, PORTSMOUTH /s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney 05 Sep 2025 0001566391

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IRM Common Stock, par value $.01 per share Options Exercise $2.53M +69.1K $36.59 69.1K 03 Sep 2025 Direct F1
transaction IRM Common Stock, par value $.01 per share Sale -$6.19M -69.1K -100% $89.56 0 03 Sep 2025 Direct F1
holding IRM Common Stock, par value $.01 per share 296K 03 Sep 2025 By GRAT F2

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 Employee Stock Option (Right to Buy) Options Exercise -$2.53M -69.1K -25% $36.59 207K 03 Sep 2025 Common Stock, par value $.01 per share 69.1K $36.59 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023.
F2 Balance reflects 295,650 shares transferred from the Grantor for funding of a Grantor Retained Annuity Trust on November 29, 2024. This transfer is exempt from Section 16 pursuant to Rule 16a-13.
F3 This stock option, representing a right to purchase a total of 829,506 shares, is fully vested.