1951
Iron Mountain Atomic Storage Corporation is established by Herman Knaust
1975
Iron Mountain, the present company, purchases the underground mine and the nearby, larger underground site from Knaust
1978
Iron Mountain purchases nearby above-ground record center and begins developing high-density storage systems
1980
Company expands to New England with the purchase of a third underground facility
Becomes a founding member of Professional Records and Information Services Management (PRISM), formerly ACRC
1981
C. Richard Reese joins the Company as president and CEO
1983
Iron Mountain expands to New Hampshire and New Jersey
1986
Company establishes corporate headquarters in Boston and purchases New England Storage Warehouse
Becomes dominant records management company in the Northeast
1988
Iron Mountain becomes a national company with the acquisition of Bell & Howell Records Management Company
1991
Iron Mountain introduces customers to SafeKeeper, its proprietary records inventory management system
1994
Company launches Records Management Consulting Services
1995
Richard Reese is named chairman of the board
1996
Iron Mountain begins trading on the NASDAQ under the symbol IMTN
1997
Iron Mountain becomes the leading software escrow company in the world with the acquisition of Data Securities International, Inc. (DSI)
Enters the Health Information Management services market with the acquisition of Record Masters (HIMSCorp.)
1998
Iron Mountain becomes the leading off-site data protection company in the U.S. with the acquisition of Arcus Data Security, Inc. (renamed Off-Site Data Protection in 2001)
1999
Company establishes its first international presence through acquisition of British Data Management (BDM) in the UK
Enters the Mexican market with the acquisition of SAC Mexico
Moves to the New York Stock Exchange under the symbol IRM
2000
Iron Mountain enters Latin America through the acquisition of Storage, S.A. in Argentina
Merges with Pierce Leahy Archives, the second largest records management company, making Iron Mountain the only company to provide a full line of records and information management services throughout the Western Hemisphere and in Europe
Establishes Iron Mountain Confidential Destruction division (later renamed Information Destruction)
2001
Company launches two key technology solutions for information protection and storage: Electronic Vaulting services for online backup and recovery and Digital Archives for electronic records management
2002
The Boston Business Journal names Iron Mountain "Company of the Year"
2003
Iron Mountain debuts on the FORTUNE 1000 list at #887
Ernst & Young names CEO Richard Reese "N.E. Entrepreneur of the Year"
Significantly increases its presence throughout Europe by acquiring the Information Management Services unit of Hays PLC
2004
Iron Mountain climbs to #857 on the FORTUNE 1000 list
Expands its Intellectual Property Management services by acquiring domain name management firm Arcemus®
Expands Secure Shredding services in Canada through the acquisition of Ontario-based franchiser Proshred Security International Inc.
Forms the Iron Mountain Digital business unit, following the acquisition of Connected Corporation, a leader in online backup and distributed data protection
Company appoints Bob Brennan as President of North America
2005
Iron Mountain moves up to #811 on the FORTUNE 1000 list
Enters the Pacific Rim with the acquisition of the Australian and New Zealand operations of Pickfords Records Management ("PRM")
Bob Brennan is promoted to President and Chief Operating Officer
Acquires LiveVault Corporation, a leading provider of disk-based online server backup and recovery solutions, further extending the Company's technology portfolio
2006
Iron Mountain rises to #783 on the FORTUNE 1000 list
Iron Mountain expands Government Services Organization; opens new government-focused business unit headquarters in Dulles, Va.
Acquires DigiGuard, a leading provider of data protection services in Australia and New Zealand
Boston Leader Summit honors Richard Reese with Visionary Leadership award
2007
Iron Mountain ascends to #780 on the FORTUNE 1000 list
Debuts in Forbes magazine's "Top 400 Best Big Companies"
Extends records management portfolio with acquisition of Accutrac Software, Inc.
Acquires Stratify, Inc., augmenting its suite of eDiscovery services
2008
Iron Mountain moves to #722 on the FORTUNE 1000 list
Bob Brennan is elected president and CEO and Richard Reese becomes executive chairman of the board
Security magazine names Iron Mountain to its annual ranking of the nation's most secure companies, the Security 500
2009
Iron Mountain climbs to #681 on the FORTUNE 1000 list
Joins the S&P 500 Index
Tops $3 billion in annual revenue for the first time in the company's history
2010
Iron Mountain acquires Mimosa Systems
Company issues first ever quarterly dividend payment to shareholders and initiates stock repurchase program
Iron Mountain climbs 37 spots to #644 on FORTUNE 1000 list
InfoWorld names Iron Mountain to its "Green 15" list of the world’s most eco-friendly IT projects
2011
Iron Mountain completes sale of digital business unit to Autonomy Corporation
Announces three-year strategic plan for its business, committing to return $2.2 billion to Iron Mountain shareholders by 2013
Richard Reese resumes CEO role for Iron Mountain
2012
Iron Mountain appoints William Meaney president and CEO
Board approves plan to pursue conversion to a Real Estate Investment Trust (REIT)
Adds first solar panels atop select storage facilities
2013
Iron Mountain appoints Alfred J. Verrechia as Chairman of the Board of Directors
Richard Reese retires from Iron Mountain and its Board of Directors after 31 years
Added to FTSE4Good Index for meeting globally recognized standards for corporate responsibility
Announced company’s first-ever commitment to reducing greenhouse gas emissions, targeting a 5 percent cut by the end of 2014
2014
Coverts to a Real Estate Investment Trust, effective Jan. 1
Publishes first-ever Corporate Responsibility report
Appoints Jennifer Allerton and Pamela Arway to Board of Directors
Purchases Securit Records Management, sells shredding operations in United Kingdom, Ireland and Australia
2015
2016
2017
2018