Key facts
- This page summarizes Daniel Borges's Form 4 filing for IRON MOUNTAIN INC (IRM).
- 13 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 03 Mar 2026, 18:59.
Daniel Borges - 01 Mar 2026 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)
- Reporting relationship
- SVP & Chief Accounting Officer
- Issuer ticker
- IRM
- Reported as of
- 01 Mar 2026
- Net transaction value
- -$414,796
- SEC form
- 4
- Accepted by SEC
- 03 Mar 2026, 18:59:40 UTC
- Prior SEC filing
- 18 Feb 2026
- Next SEC filing
- 26 May 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Christine Zhang, under Power of Attorney dated June 19, 2025 from Daniel Borges
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Daniel Borges filed Form 4 for IRON MOUNTAIN INC (IRM) on 03 Mar 2026.
Change
- Previous filing in this sequence was filed on 18 Feb 2026.
- Current net transaction value: -$414,796.
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 0001720656
Primary reporting owner
Borges Daniel
- Relationship
- SVP & Chief Accounting Officer
- Address
- C/O IRON MOUNTAIN INCORPORATED, 85 NEW HAMPSHIRE AVENUE, SUITE 150, PORTSMOUTH
- Signature
- /s/ Christine Zhang, under Power of Attorney dated June 19, 2025 from Daniel Borges
- 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
- +9,152
- Change %
- +3178%
- Price
- $0.000000
- Shares after
- 9,440
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F1
IRM
transaction
Common Stock, par value $.01 per share
Tax liability
- Transaction value
- $336,473
- Shares
- -3,106
- Change %
- -33%
- Price
- $108.33
- Shares after
- 6,334
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F2
IRM
transaction
Common Stock, par value $.01 per share
Options Exercise
- Transaction value
- $0
- Shares
- +713
- Change %
- +11%
- Price
- $0.000000
- Shares after
- 7,047
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F3
IRM
transaction
Common Stock, par value $.01 per share
Tax liability
- Transaction value
- $35,424
- Shares
- -327
- Change %
- -4.6%
- Price
- $108.33
- Shares after
- 6,720
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F4
IRM
transaction
Common Stock, par value $.01 per share
Options Exercise
- Transaction value
- $0
- Shares
- +463
- Change %
- +6.9%
- Price
- $0.000000
- Shares after
- 7,183
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F5
IRM
transaction
Common Stock, par value $.01 per share
Tax liability
- Transaction value
- $22,966
- Shares
- -212
- Change %
- -3%
- Price
- $108.33
- Shares after
- 6,971
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F4
IRM
transaction
Common Stock, par value $.01 per share
Options Exercise
- Transaction value
- $0
- Shares
- +402
- Change %
- +5.8%
- Price
- $0.000000
- Shares after
- 7,373
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F6
IRM
transaction
Common Stock, par value $.01 per share
Tax liability
- Transaction value
- $19,933
- Shares
- -184
- Change %
- -2.5%
- Price
- $108.33
- Shares after
- 7,189
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F4
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
- -9,152
- 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
- 9,152
- Exercise price
- Footnotes
- F7, F8
IRM
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -713
- 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
- 713
- Exercise price
- Footnotes
- F9, F10
IRM
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -463
- Change %
- -50%
- Price
- $0.000000
- Shares after
- 463
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $.01 per share
- Underlying amount
- 463
- Exercise price
- Footnotes
- F9, F11
IRM
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -402
- Change %
- -33%
- Price
- $0.000000
- Shares after
- 805
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $.01 per share
- Underlying amount
- 402
- Exercise price
- Footnotes
- F9, F12
IRM
transaction
Derivative
Restricted Stock Units
Award
- Transaction value
- $0
- Shares
- +1,104
- Change %
- Price
- $0.000000
- Shares after
- 1,104
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $.01 per share
- Underlying amount
- 1,104
- Exercise price
- Footnotes
- F9, F13
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 13 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'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
This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023.
Footnote F4
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 RSUs and does not represent a sale.
Footnote F5
This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on March 1, 2024.
Footnote F6
This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on March 1, 2025.
Footnote F7
Each PU represents a contingent right to receive one share of Common Stock.
Footnote F8
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 F9
Each RSU represents a contingent right to receive one share of Common Stock.
Footnote F10
The RSUs, representing a contingent right to receive a total of 2,139 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.
Footnote F11
The RSUs, representing a contingent right to receive a total of 1,388 shares of Common Stock, were granted to the Reporting Person on March 1, 2024 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.
Footnote F12
The RSUs, representing a contingent right to receive a total of 1,207 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.
Footnote F13
The RSUs, representing a contingent right to receive a total of 1,104 shares of Common Stock, were granted to the Reporting Person on March 1, 2026 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.