X0303 4 2010-07-19 0 0001020569 IRON MOUNTAIN INC IRM 0001279505 LAMACH MICHAEL W INGERSOLL RAND COMPANY 155 CHESTNUT RIDGE ROAD MONTVALE NJ 07645 1 0 0 0 Phantom Stock 2010-07-19 4 A 0 3.290 23.7099 A Common Stock 3.290 1447.8231 D Pursuant to Mr. Lamach's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan, the shares of phantom stock become payable in cash following Mr. Lamach's disability or cessation of service as a director. Each share of phantom stock is the economic equivalent of one share of common stock. These shares give effect to dividends paid on common stock as if reinvested in phantom stock. /s/ Garry B. Watzke, under Power of Attorney dated June 5, 2008 from Michael W. Lamach 2010-07-21