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Offerings - Offering: 1
Dec. 11, 2025
USD ($)
shares
Offering:  
Fee Previously Paid false
Other Rule true
Security Type Equity
Security Class Title Common Stock, $0.01 par value per share
Amount Registered | shares 4,600,000
Proposed Maximum Offering Price per Unit 83.98
Maximum Aggregate Offering Price $ 386,308,000.00
Fee Rate 0.01381%
Amount of Registration Fee $ 53,349.13
Offering Note Shares of Common Stock, par value $0.01 per share ("Common Stock"), of Iron Mountain Incorporated authorized for issuance under the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan, as amended. Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "Securities Act"), this Registration Statement also covers such indeterminate number of additional securities as may be issued to prevent dilution resulting from stock dividends, stock splits, recapitalization, or similar transactions. The maximum aggregate offering price per unit and maximum aggregate offering price were estimated solely for purposes of calculating the registration fee pursuant to Rules 457(c) and 457(h) under the Securities Act. The fee is calculated on the basis of the average of the high and low prices for the Common Stock reported in the consolidated reporting system as of December 8, 2025, which is a date within five business days prior to the date of filing this Registration Statement.