================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2005 IRON MOUNTAIN INCORPORATED (Exact name of registrant as specified in its charter) PENNSYLVANIA (State or other jurisdiction of incorporation) 1-13045 23-2588479 (Commission File Number) (IRS Employer Identification No.) 745 Atlantic Avenue Boston, Massachusetts 02111 (Address of principal executive offices, including zip code) (617) 535-4766 (Registrant's telephone number, including area code) ================================================================================ ITEM 2.02. RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On April 28, 2005, the Company issued a press release setting forth the Company's results of operations and financial condition for its first fiscal quarter ended March 31, 2005. A copy of the Company's press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS. (c) Exhibits 99.1 Press Release of Iron Mountain Incorporated dated April 28, 2005. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. IRON MOUNTAIN INCORPORATED (Registrant) By: /s/ Jean A. Bua ------------------------------------ Name: Jean A. Bua Title: Senior Vice President and Corporate Controller Date: April 28, 2005