Iron Mountain updates REIT tax disclosure; counsel opines on qualification from 2014-2025

IRON MOUNTAIN INC

Filed updated material U.S. federal income tax considerations for REIT status and stock ownership.
Sullivan & Worcester LLP opinion states Iron Mountain has qualified as a REIT for 2014-2025 and expects to continue.
Summary replaces prior tax descriptions; covers REIT requirements, distribution rules, and tax consequences for stockholders.
Company cautions that IRS challenges or changes in law could affect REIT qualification, with potential corporate-level tax.
Ownership restrictions in charter aim to prevent concentrated ownership that would jeopardize REIT status.

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