X0206 3 2015-04-02 0 0001020569 IRON MOUNTAIN INC IRM 0001346840 Keddy Patrick J C/O IRON MOUNTAIN INCORPORATED ONE FEDERAL STREET BOSTON MA 02110 0 1 0 0 Exec VP & GM, N. A. & W. Europ Common Stock, par value $.01 per share 6563 D Performance Units Common Stock 991 D Restricted Stock Units 2016-03-15 2016-03-15 Common Stock 474 D Restricted Stock Units Common Stock 2641 D Restricted Stock Units Common Stock 2575 D Employee Stock Option (Right to Buy) 24.0827 2021-11-29 Common Stock 42843 D Employee Stock Option (Right to Buy) 24.8037 2024-02-13 Common Stock 7011 D Employee Stock Option (Right to Buy) 38.83 2025-02-19 Common Stock 7133 D The performance units ("PUs") will fully vest on March 15, 2016, subject to certain exceptions, if the Reporting Person is, as of that date, continuing to perform services for Iron Mountain Incorporated. Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock"). Each restricted stock unit ("RSU") represents a contingent right to receive one share of Common Stock. The RSUs vest in two substantially equal installments on February 13, 2016 and Feburary 13, 2017. The RSUs were granted to the Reporting Person on February 19, 2015 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date. This option is fully vested. This option has vested with respect to 2,344 shares. The remaining shares vest in two substantially equal installments beginning on February 13, 2016. This option vests in three substantially equal installments on February 19, 2016, February 19, 2017 and February 19, 2018. /s/ Sarah Cammarata, under Power of Attorney dated April 8, 2015, from Patrick Keddy 2015-04-13