William L. Meaney - 07 Aug 2026 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)

Reporting relationship: President and CEO, Director
Issuer ticker: IRM
Reported as of: 07 Aug 2026
Net transaction value: -$4,680,954
SEC form: 4
Accepted by SEC: 10 Aug 2026, 16:12:28 UTC
Prior SEC filing: 02 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney

Key filing fact

William L. Meaney filed Form 4 for IRON MOUNTAIN INC (IRM) on 10 Aug 2026.

Key facts

This page summarizes William L. Meaney's Form 4 filing for IRON MOUNTAIN INC (IRM).
5 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 10 Aug 2026, 16:12.

Change

Previous filing in this sequence was filed on 02 Jul 2026.
Current net transaction value: -$4,680,954.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001566391 Primary reporting owner

Meaney William L

Relationship: President and CEO, Director
Address: C/O IRON MOUNTAIN INCORPORATED, 85 NEW HAMPSHIRE AVENUE, SUITE 150, PORTSMOUTH
Signature: /s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney
Signature date: 10 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

IRM transaction

Common Stock, par value $.01 per share

Options Exercise

Transaction value
Shares: +38,474
Change %
Price: $37.00^*
Shares after: 38,474
Date: 07 Aug 2026
Ownership: Direct
Footnotes: F1

IRM transaction

Common Stock, par value $.01 per share

Sale

Transaction value: $2,274,258
Shares: -18,780
Change %: -49%
Price: $121.10
Shares after: 19,694
Date: 07 Aug 2026
Ownership: Direct
Footnotes: F1, F2

IRM transaction

Common Stock, par value $.01 per share

Sale

Transaction value: $2,049,616
Shares: -16,785
Change %: -85%
Price: $122.11
Shares after: 2,909
Date: 07 Aug 2026
Ownership: Direct
Footnotes: F1, F3

IRM transaction

Common Stock, par value $.01 per share

Sale

Transaction value: $357,080
Shares: -2,909
Change %: -100%
Price: $122.75
Shares after: 0
Date: 07 Aug 2026
Ownership: Direct
Footnotes: F1, F4

IRM holding

Common Stock, par value $.01 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 82,970
Date: 07 Aug 2026
Ownership: By Meaney 2024 Master Trust

IRM holding

Common Stock, par value $.01 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 212,680
Date: 07 Aug 2026
Ownership: By Meaney Master Trust #2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

IRM transaction Derivative

Employee Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -38,474
Change %: -20%
Price
Shares after: 153,896
Date: 07 Aug 2026
Ownership: Direct
Underlying class: Common Stock, par value $.01 per share
Underlying amount: 38,474
Exercise price: $37.00
Footnotes: F1, F5, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 6 footnotes

Footnote F1

This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated common stock ("Common Stock") were sold in multiple transactions at prices ranging from $120.56 to $121.55, 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 (2).

Footnote F3

The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $121.56 to $122.56, 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 (3).

Footnote F4

The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $122.60 to $123.12, 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 (4).

Footnote F5

This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Footnote F6

Not applicable.