Iron Mountain Incorporated Declares Quarterly Dividend

March 14, 2014

BOSTON--(BUSINESS WIRE)-- The Board of Directors of Iron Mountain Incorporated (NYSE: IRM) declared a cash dividend of $0.27 per share on the common stock of the company, payable on April 15, 2014 to shareholders of record at the close of business on March 25, 2014.

About Iron Mountain

Iron Mountain Incorporated (NYSE: IRM) is a leading provider of storage and information management services. The company’s real estate network of over 66 million square feet across more than 1,000 facilities in 36 countries allows it to serve customers around the world. And its solutions for records management, data management, document management, and secure shredding help organizations to lower storage costs, comply with regulations, recover from disaster, and better use their information. Founded in 1951, Iron Mountain stores and protects billions of information assets, including business documents, backup tapes, electronic files and medical data. Visit www.ironmountain.com for more information.

Source: Iron Mountain Incorporated

Investor Relations Contact:

Iron Mountain Incorporated

Melissa Marsden, 617-535-8595

Senior Vice President, Investor Relations

Melissa.Marsden@ironmountain.com