Iron Mountain (IRM) Proxy filing summary

Executive summary

• Annual Meeting scheduled for May 7, 2026, at 9:00 A.M. ET, to be held virtually.

• Shareholders are encouraged to review proxy materials and vote by May 6, 2026.

Voting matters and shareholder proposals

• Election of eleven directors for a one-year term or until successors are elected and qualified.

• Advisory vote to approve executive compensation for named executive officers.

• Ratification of Deloitte & Touche LLP as independent registered public accounting firm for the year ending December 31, 2026.

• Proxies may vote on other business as may properly come before the meeting.

Board of directors and corporate governance

• Eleven nominees listed for election to the board, including Jennifer Allerton, Pamela M. Arway, Kent P. Dauten, June Yee Felix, Monte Ford, Christie Kelly, Robin L. Matlock, William L. Meaney, Walter C. Rakowich, Theodore R. Samuels, and Doyle R. Simons.