IRON MOUNTAIN INC — Director's Dealing 2017

Apr 3, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2017-03-02

Reporting Person: Duale Marc A (President, Iron Mountain Int.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-03-02	Common Stock, par value $.01 per share	M	11347	$22.0356	Acquired	55385	Direct
2017-03-02	Common Stock, par value $.01 per share	F	7054	$36.32	Disposed	48331	Direct
2017-03-02	Common Stock, par value $.01 per share	M	8783	$24.8037	Acquired	57114	Direct
2017-03-02	Common Stock, par value $.01 per share	F	6099	$36.32	Disposed	51015	Direct
2017-03-31	Common Stock, par value $.01 per share	M	1936	—	Acquired	52951	Direct
2017-03-31	Common Stock, par value $.01 per share	F	109	$35.39	Disposed	52842	Direct
2017-03-31	Common Stock, par value $.01 per share	M	8532	—	Acquired	61374	Direct
2017-03-31	Common Stock, par value $.01 per share	F	430	$35.39	Disposed	60944	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-03-02	Employee Stock Option (Right to Buy)	$22.0356	M	11347	Disposed	2019-03-01	Common Stock (11347)	Direct
2017-03-02	Employee Stock Option (Right to Buy)	$24.8037	M	8783	Disposed	2024-02-13	Common Stock (8783)	Direct
2017-03-31	Restricted Stock Units	$	M	1936	Disposed		Common Stock (1936)	Direct
2017-03-31	Restricted Stock Units	$	M	8532	Disposed		Common Stock (8532)	Direct

Footnotes

F1: This report is being filed late due to an administrative error by a third party broker firm that is the administrator of this transaction.

F2: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on February 19, 2015.

F3: This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on February 18, 2016.

F4: This stock option, representing a right to purchase a total of 113,451 shares, is fully vested. The number of stock options granted includes previously reported adjustments effective on October 18, 2012 made in connection with a special dividend declared by the Board of Directors of the Issuer and on September 26, 2014 made in connection with the special distribution declared by the Board of Directors of the Issuer (the "Special Distribution").

F5: This stock option, representing a right to purchase a total of 26,296 shares, is fully vested. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the Special Distribution.

F6: Each RSU represents a contingent right to receive one share of the Issuer's common stock ("Common Stock").

F7: The RSUs, representing a contingent right to receive a total of 5,794 shares of Common Stock, 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. In connection with the Reporting Person's resignation from the Issuer on March 31, 2017, the unvested portion of this RSU award became fully vested.

F8: The RSUs, representing a contingent right to receive a total of 25,623 shares of Common Stock, were granted to the Reporting Person on February 18, 2016 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date. In connection with the Reporting Person's resignation from the Issuer on March 31, 2017, the unvested portion of this RSU award became partially vested.