Mithu Bhargava - 16 Feb 2026 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)

Role
EVP, GM Digital Business Unit
Signature
/s/ Christine Zhang, under Power of Attorney dated November 19, 2024, from Mithu Bhargava
Issuer symbol
IRM
Transactions as of
16 Feb 2026
Net transactions value
$0
Form type
4
Filing time
18 Feb 2026, 17:18:26 UTC
Previous filing
04 Mar 2025
Next filing
03 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Bhargava Mithu EVP, GM Digital Business Unit C/O IRON MOUNTAIN INCORPORATED, 85 NEW HAMPSHIRE AVE, SUITE 150, PORTSMOUTH /s/ Christine Zhang, under Power of Attorney dated November 19, 2024, from Mithu Bhargava 18 Feb 2026 0002045996

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 Performance Units Award $0 +37,085 +250% $0.000000 51,919 16 Feb 2026 Common Stock, par value $.01 per share 37,085 Direct F1, F2, F3
transaction IRM Performance Units Award $0 +43,652 +250% $0.000000 61,113 16 Feb 2026 Common Stock, par value $.01 per share 43,652 Direct F1, F4, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each Performance Unit ("PU") represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").
F2 The PUs were initially granted to the Reporting Person on March 1, 2023. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 16, 2026, of the actual award of PUs under the grant after completion of the relevant performance period.
F3 The PU were initially granted to the Reporting Person on March 1, 2023, and will fully vest on March 1, 2026.
F4 The PUs were initially granted to the Reporting Person on July 3, 2023. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 16, 2026, of the actual award of PUs under the grant after completion of the relevant performance period.
F5 The PU were initially granted to the Reporting Person on July 3, 2023, and will fully vest on March 1, 2026.