The Board of Directors (the "Board") of Iron Mountain Incorporated (NYSE:IRM), a global leader in innovative storage, data center infrastructure, asset lifecycle management and information management services, declared a quarterly cash dividend of $0.65 per share for the third quarter, payable on October 5, 2023 to shareholders of record on September 15, 2023.

"Consistent with our long term commentary that we would increase the dividend as our payout ratio of Adjusted Funds from Operations settled into the low to mid 60s as a percentage, we are pleased to announce a 5% increase to our dividend." said William L. Meaney, President and Chief Executive Officer. "We remain committed to our disciplined approach to capital allocation, and our ability to achieve our growth ambitions with Project Matterhorn whilst raising our dividend."

About Iron Mountain

Iron Mountain Incorporated (NYSE:IRM) is a global leader in innovative storage, data center infrastructure, asset lifecycle management and information management services. Founded in 1951 and trusted by more than 225,000 customers worldwide, Iron Mountain helps customers CLIMB HIGHER™ to transform their businesses. Through a range of offerings including digital transformation, data centers, secure records storage, information management, asset lifecycle management, secure destruction, and art storage and logistics, Iron Mountain helps businesses bring light to their dark data, enabling customers to unlock value and intelligence from their stored digital and physical assets at speed and with security, while helping them meet their environmental goals.

To learn more about Iron Mountain, please visit: www.IronMountain.com and follow @IronMountain on Twitter and LinkedIn.

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Iron Mountain Increases Quarterly Dividend per Share by 5%