The Board of Directors (the “Board”) of Iron Mountain Incorporated (NYSE: IRM), a global leader in information management services, declared a quarterly cash dividend of $0.864 per share of common stock representing an increase of 10% which is payable on January 6, 2026 to shareholders of record at the close of business on December 15, 2025.

“Based on our continued strong outlook for revenue and profitability growth and our excellent results year-to-date, we are increasing the dividend by 10%. This will mark the fourth consecutive year in which we have increased the dividend and aligns with our long term plan to increase the dividend alongside growth in AFFO per share,” said William L. Meaney, President and Chief Executive Officer.

About Iron Mountain

Iron Mountain Incorporated (NYSE: IRM) is trusted by more than 240,000 customers in 61 countries, including approximately 95% of the Fortune 1000, to help unlock value and intelligence from their assets through services that transcend the physical and digital worlds. Our broad range of solutions address their information management, digital transformation, information security, data center and asset lifecycle management needs. Our longstanding commitment to safety, security, sustainability and innovation in support of our customers underpins everything we do.

To learn more about Iron Mountain, please visit www.IronMountain.com.

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