8-KItem 8.01 · Other EventsItem 9.01 · Financial Statements

Iron Mountain ($IRM) filed an 8-K (Item 8.01) on 2026-03-09 attaching Exhibit 99.1: material U.S.

Filed with the SEC on · Summarized by InvestorsBot

Iron Mountain ($IRM) filed an 8-K (Item 8.01) on 2026-03-09 attaching Exhibit 99.1: material U.S. federal income tax considerations re the Company’s REIT qualification and taxation and tax treatment of acquiring, owning or disposing of IRM stock. 📄 #REIT #tax

Exhibit 99.1 replaces and supersedes prior federal tax descriptions to the extent inconsistent — investors and advisors should rely on this updated description for REIT tax treatment and stockholder tax consequences. $IRM 📌 #investors #tax

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