X0306 4 2014-11-04 0 0001020569 IRON MOUNTAIN INC IRM 0001296569 Drapeau Anne S C/O IRON MOUNTAIN INCORPORATED ONE FEDERAL STREET BOSTON MA 02110 0 1 0 0 EVP, Strategy and Talent Common Stock, par value $.01 per share 2014-11-04 4 A 0 1736 0 A 25739 D Restricted Stock Units Common Stock 4127 D Restricted Stock Units Common Stock 6963 D Restricted Stock Units Common Stock 7124 D Performance Units Common Stock 11042 D Performance Units Common Stock 7312 D This report reflects shares received by the Reporting Person as a result of the Reporting Person's receipt of her pro rata portion of a special distribution declared by the Board of Directors of the issuer on September 15, 2014 and paid on November 4, 2014 (the "Special Distribution"). Includes 310 previously unreported unvested restricted stock units ("RSUs") allocated on November 4, 2014 in connection with the Special Distribution and associated with the previously reported RSU grant received by the Reporting Person on March 9, 2012. The RSUs vest in three substantially equal annual installments beginning on March 9, 2013, which was the first anniversary of the grant date. Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock"). Includes 523 previously unreported unvested RSUs allocated on November 4, 2014 in connection with the Special Distribution and associated with the previously reported RSU grant received by the Reporting Person on March 15, 2013. The RSUs vest in three substantially equal annual installments beginning on March 15, 2014, which was the first anniversary of the grant date. Each RSU represents a contingent right to receive one share of Common Stock. Includes 535 previously unreported unvested RSUs allocated on November 4, 2014 in connection with the Special Distribution and associated with the previously reported RSU grant received by the Reporting Person on February 13, 2014. The RSUs vest in three substantially equal annual installments beginning on February 13, 2015, which will be the first anniversary of the grant date. Each RSU represents a contingent right to receive one share of Common Stock. Includes 830 previously unreported unvested performance units ("PUs") allocated on November 4, 2014 in connection with the Special Distribution and associated with the previously reported PUs granted to the Reporting Person on March 9, 2012 and subsequently awarded by the Compensation Committee of the Board of Directors of the issuer (the "Compensation Committee") on March 13, 2013. Each PU represents a contingent right to receive one share of Common Stock. The PUs fully vest on March 9, 2015, subject to certain exceptions, if the Reporting Person is, as of that date, continuing to perform services for the issuer. Includes 550 previously unreported unvested PUs allocated on November 4, 2014 in connection with the Special Distribution and associated with the previously reported PUs granted to the Reporting Person on March 15, 2013 and subsequently awarded by the Compensation Committee on March 10, 2014. Each PU represents a contingent right to receive one share of Common Stock. The PUs fully vest on March 15, 2016, subject to certain exceptions, if the Reporting Person is, as of that date, continuing to perform services for the issuer. /s/ Sarah Cammarata, under Power of Attorney dated November 1, 2013, from Anne S. Drapeau 2014-11-06