Form 4 Filing for Theodore R. Samuels II

Theodore R. Samuels II, a director at IRON MOUNTAIN INC (IRM), reported a transaction on October 6, 2026. He acquired 310.49 shares of "Phantom Stock" under the Directors Deferred Compensation Plan, with each share equivalent to one share of Common Stock. This acquisition was a result of reinvesting his quarterly cash compensation. The transaction code "A" indicates an acquisition, and the price per share was $116.75. Following this transaction, Mr. Samuels now holds 14,215.49 shares of Phantom Stock. The filing also includes a Power of Attorney document, dated July 6, 2023, authorizing Deborah Marson, Keely Stewart, and Luke Cummiskey to act on his behalf for Section 16 filings.