Key facts
- This page summarizes William L. Meaney's Form 4 filing for IRON MOUNTAIN INC (IRM).
- 15 reported transactions and 3 derivative rows are listed below.
- Accepted by SEC: 03 Mar 2026, 19:31.
William L. Meaney - 01 Mar 2026 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)
- Reporting relationship
- President and CEO, Director
- Issuer ticker
- IRM
- Reported as of
- 01 Mar 2026
- Net transaction value
- -$41,314,842
- SEC form
- 4
- Accepted by SEC
- 03 Mar 2026, 19:31:35 UTC
- Prior SEC filing
- 24 Feb 2026
- Next SEC filing
- 05 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
William L. Meaney filed Form 4 for IRON MOUNTAIN INC (IRM) on 03 Mar 2026.
Change
- Previous filing in this sequence was filed on 24 Feb 2026.
- Current net transaction value: -$41,314,842.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
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
- 03 Mar 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
- $0
- Shares
- +650,674
- Change %
- Price
- $0.000000
- Shares after
- 650,674
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F1
IRM
transaction
Common Stock, par value $.01 per share
Tax liability
- Transaction value
- $27,736,813
- Shares
- -256,040
- Change %
- -39%
- Price
- $108.33
- Shares after
- 394,634
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F2
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $313,872
- Shares
- -2,929
- Change %
- -0.74%
- Price
- $107.16
- Shares after
- 391,705
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F4
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $1,491,744
- Shares
- -13,778
- Change %
- -3.5%
- Price
- $108.27
- Shares after
- 377,927
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F5
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $4,067,875
- Shares
- -37,296
- Change %
- -9.9%
- Price
- $109.07
- Shares after
- 340,631
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F6
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $4,562,233
- Shares
- -41,456
- Change %
- -12%
- Price
- $110.05
- Shares after
- 299,175
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F7
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $354,368
- Shares
- -3,200
- Change %
- -1.1%
- Price
- $110.74
- Shares after
- 295,975
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F8
IRM
transaction
Common Stock, par value $.01 per share
Options Exercise
- Transaction value
- $1,423,538
- Shares
- +38,474
- Change %
- +13%
- Price
- $37.00
- Shares after
- 334,449
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $224,104
- Shares
- -2,076
- Change %
- -0.62%
- Price
- $107.95
- Shares after
- 332,373
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F9
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $1,792,332
- Shares
- -16,457
- Change %
- -5%
- Price
- $108.91
- Shares after
- 315,916
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F10
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $1,993,232
- Shares
- -18,117
- Change %
- -5.7%
- Price
- $110.02
- Shares after
- 297,799
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F11
IRM
transaction
Common Stock, par value $.01 per share
Sale
- Transaction value
- $201,807
- Shares
- -1,824
- Change %
- -0.61%
- Price
- $110.64
- Shares after
- 295,975
- Date
- 02 Mar 2026
- Ownership
- Direct
- Footnotes
- F3, F12
IRM
holding
Common Stock, par value $.01 per share
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 82,970
- Date
- 01 Mar 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
- 01 Mar 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
Performance Units
Options Exercise
- Transaction value
- $0
- Shares
- -650,674
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $.01 per share
- Underlying amount
- 650,674
- Exercise price
- Footnotes
- F13, F14
IRM
transaction
Derivative
Employee Stock Option (Right to Buy)
Award
- Transaction value
- Shares
- +74,069
- Change %
- Price
- Shares after
- 74,069
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $.01 per share
- Underlying amount
- 74,069
- Exercise price
- $108.33
- Footnotes
- F15, F16
IRM
transaction
Derivative
Employee Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -38,474
- Change %
- -10%
- Price
- Shares after
- 346,266
- Date
- 02 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $.01 per share
- Underlying amount
- 38,474
- Exercise price
- $37.00
- Footnotes
- F3, F16, F17
* 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 17 footnotes
Footnote 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 Committee of Iron Mountain Incorporated (the "Company")'s Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.
Footnote 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 represent a sale.
Footnote F3
The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.
Footnote F4
The price reported in Column 4 is a weighted average price. These shares of the Company common stock ("Common Stock") were sold in multiple transactions at prices ranging from $106.65 to $107.64, 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
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $107.67 to $108.66, 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).
Footnote F6
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $108.67 to $109.66, 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 (6).
Footnote F7
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $109.68 to $110.58, 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 (7).
Footnote F8
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $110.70 to $110.79, 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 (8).
Footnote F9
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $107.35 to $108.35, 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 (9).
Footnote F10
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $108.39 to $109.36, 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 (10).
Footnote F11
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $109.40 to $110.40, 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 (11).
Footnote F12
The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $110.40 to $110.81, 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 (12).
Footnote F13
Each PU represents a contingent right to receive one share of Common Stock.
Footnote F14
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 completion of the relevant performance period, and the PUs fully vested on March 1, 2026.
Footnote F15
This stock option becomes exercisable in three substantially equal annual installments beginning on the first anniversary of the date of grant.
Footnote F16
Not applicable.
Footnote F17
This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.