IRON MOUNTAIN INC (IRM) Institutional Ownership and Insiders Activity

IRON MOUNTAIN INC (IRM) is widely held by institutional investors, with 2 tracked firms reporting positions valued at approximately $1.81M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Sequoia Financial Advisors is the largest disclosed holder, reporting approximately $1.57M in IRM holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Sequoia Financial Advisors representing the majority of disclosed value.

Recent insider activity includes 16 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.